Re: [Elecraft] KSB2 problems in K2 transceiver
Mark, When you have the problem, look at the voltage at P1 pin 6 (that is VRFDET signal)? If that is high, the MCU will limit power drastically. Make sure Q1 is properly oriented. If that does not help, try a mod to the KSB2 - reduce R9 to 1.5k and cut the trace between P1 pin 6 and the base of Q1 (on the top of the board) and insert a 1k resistor across the trace cut. That will calm ALC problems with the KSB2, and otherwise will do no harm. 73, Don W3FPR On 5/8/2021 1:44 PM, M Bak wrote: Today I finished the KSB2 adapter and installed it into my K2. It worked first time but was intermittent. I found the issue as I had omitted to solder the outer top pins of the twin three pin interconnects. That done everything seems ok and then No Apparent RF output. USB/LSB/CW Pressing TUNE produced a max of 0.8W. VOX would trip to transmit but the S meter showed no modulation. Coarse carrier balance adjustment worked but zero S meter readings was very wide (unlike earlier when it was a fine, narrow adjustment) All voltages looked slightly low but ball park on the KSB2 board except for U2 (the DAC) Pin5 which is ALC THR. This was sitting at 5.89v rather than 0.6 on both RX and TX. I have removed the KSB2 and full CW power output can now be achieved which is a relief. I will examine everything under a microscope again but has anyone any suggestions? I suspect ALC to be the culprit but how to investigate? Thanks Mark G4RUR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KSB2 problems in K2 transceiver
Mark, Pin 5 of U2 provides ALC threshold voltage to the emitter of Q1 on the KSB2 board. The 5.89 V you measured on Pin 5 suggests that the DAC input register B didn't properly load the data word from the MCU. I would check the solder joints on all U2 pins and Pins 14, 16 and 17 of the MCU socket. 73, Mike, K8CN -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KSB2 problems in K2 transceiver
Today I finished the KSB2 adapter and installed it into my K2. It worked first time but was intermittent. I found the issue as I had omitted to solder the outer top pins of the twin three pin interconnects. That done everything seems ok and then No Apparent RF output. USB/LSB/CW Pressing TUNE produced a max of 0.8W. VOX would trip to transmit but the S meter showed no modulation. Coarse carrier balance adjustment worked but zero S meter readings was very wide (unlike earlier when it was a fine, narrow adjustment) All voltages looked slightly low but ball park on the KSB2 board except for U2 (the DAC) Pin5 which is ALC THR. This was sitting at 5.89v rather than 0.6 on both RX and TX. I have removed the KSB2 and full CW power output can now be achieved which is a relief. I will examine everything under a microscope again but has anyone any suggestions? I suspect ALC to be the culprit but how to investigate? Thanks Mark G4RUR -- If you are afraid you are living in the future. If you are sad you are living in the past. If you are content you are living in the now. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KSB2 Assembled For Sale
I have for sale an assembled KSB2 sideband board for the K2. $75.00 shipped CONUS. Jerry Holcomb N0XWR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KSB2 Problem Continued
Gareth, Yes, 100mV audio should be adequate to drive the KSB2. Do you have the K2 wired to use an Elecraft or Icom microphone? If so, try lifting the bias resistor to see if the DC bias is interfering with the output level of your audio generator - instead of lifting the bias resistor, you could put a capacitor (1 to 10uF) between the signal generator and the K2 mic input. I need to know which KSB2 board you have installed (there are 3 different ones and you can only tell me what I need to know by physical inspection of KSB2 U3. First, is this a new KSB2 board (purchased within the last year) or is it the older type with an SM2165 at U3? Is U3 an SMD component or is it a thru-hole device? Your first check should be to measure the DC voltages to KSB2 U3 - they should agree with the voltages listed in the KSB2 manual. If the voltages are not within reasonable agreement with the chart, then U3 is your problem. Did your KSB2 board work properly in the past? If so, something has failed and the challenge is to find it. OTOH, if this is a newly built board that has never worked before, check all the components for proper values and placement and check all diodes for proper orientation. If all else fails, do you have access to an oscilloscope with a 10x probe? If so, I can give you some typical AC voltage values at given points along the signal path to isolate the problem to a particular stage. 73, Don W3FPR On 1/15/2015 2:07 PM, Gareth - M5KVK wrote: K2 S/N 03885 Symptoms: low power and no ALC action when on SSB. CW With E= 13.0V on the K2 display, if I transmit CW into a dummy load PWR=10 gets me 10W according to my un-calibrated power meter and draws 2.3A (40m). SSB If I inject 1kHz sinewave into the Mic socket, for 100mV pp i/p I see about 6W out. Current varies between 1.9 and 2.2A and E comes down to 12.5 under load. Interestingly, there's zero action on the bargraph in ALC mode. Needing 100mV to get 60% of set power seems high. I thought I should get 100% with 50mV. Even with 1.6V pp i/p, I only see 8W o/p __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KSB2 SSB Adapter Problem
Hi everyone! I recently bought a used K2 with the KSB2 SSB adapter. The builder did a very clean, professional building job on both the radio and the KSB2 and I can find nothing wrong with the construction - i.e. no cold solder joints, no shorts, no solder bridges, all circuit paths are as they should be and have been verified several times. The radio works perfectly normal in CW mode, and RX in the SSB modes is fine. So here is my problem - when I key the radio in SSB mode via either the mic jack or the cw jack, I get a brief HI CUR warning and I get 12 watts of carrier which is unaffected by the carrier balance pot. Also, there is virtually SSB TX audio. ONLY SSB mode is affected. I have taken voltage readings as suggested in the KSB2 manual and found (2) voltages to be out of line, both on U2: U2 pin 5 - 5.99v, should be 0.6v U2 Pin 8 - 0.45v, should be 6.0v These are way out. All connections, components, etc. have been verified correct and good so I am thinking that U1 (the PIC) is the problem as it does affect this part of the circuit. I ahve reflowed all solder connactions on the entire board without success. Toroids have been checked for shorting against the crystal cans, no shorts. Q2 on the K2 RF board has been checked for proper installation and is verified good. Again, the symptoms are: constant 12w output with inability to balance carrier. No TX audio on SSB (yes the mic is good and is correctly wired) Hi Cur message. TX cur is set in the menu @ 2.5A so this should not be a problem. Any thoughts are appreciated, thank you! __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KSB2
Has anyone else had a problem with high current on transmit after installation of the ksb2? I took it out and everything returned to normal. Filters work great and no degraded receive just high current on transmit. I am going through the voltage and short checks that are in the book trying to track it down but if someone else has had this and fixed it I would love a point in the right direction. Thanks. Dan AD5NW K2 #7412 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KSB2 and KAF2
Dear Folks: I thought I'd mention that I successfully installed my KSB2 in my K2 a week ago Sunday, and it works great. I've been getting excellent audio reports from people and have even managed to work some DX on QRP SSB. What fun to have SSB installed in the K2, even though I'm primarily a CW operator. I inventoried the parts on the KAF2 tonight (I've already built and installed the KNB2 and the KAT2) and was absolutely shocked, I mean just shocked, to find that there are no toroids to wind in it. ;-) (Actually, I've never understood the fuss about them. I think the hardest part of them is making sure that you properly solder them during installation, since residue on the leads sometimes makes it difficult to get the solder to flow, so making sure they are properly tinned is the main chore, and that's not that bad). I don't want to jinx myself, but after the closely packed parts in the KSB2 and the KAT2, I feel like I'm building the KAF2 on a board the size of a football field. Sadly, I'm not sure what I'll do after I finish with the KAF2, as building the K2, the first three options to it, and building the K1 (along with its ATU), have been one of the deepest pleasures I've had in ham radio (and I've had many). I've already started roaming around other QRP sites for stuff to build after I finish with the KAF2 (I've also built a couple of the mini-module kits). It looks like I'm going to end up with a number of little QRP rigs sitting around. Thanks to Elecraft for a great experience in building both the K2 and the K1. 73 de Bernie, KF0QS -- View this message in context: http://elecraft.365791.n2.nabble.com/KSB2-and-KAF2-tp7571272.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KSB2 Problem with Assembly
I am currently in the process of assembly a KSB2 (REV E KSB2 PC Board) which I purchased with my K2 in November 2011. I am currently completing the installation of the resistors on the back side of the board. After I completed installing the resistors I noticed that I had an extra 10K resistor. I then checked my inventory and it showed that I had inventoried 3 10K resistors versus the 2 called for in inventory sheet. Just to be safe I downloaded the latest manual and compared it to my manual. It lists an additional four resistors on the back of the board (R21, R22, R23 and R24). I have two questions: 1. Should I be concerned that these resistors are not on the Rev E board? 2. What is the purpose of the additional resistors? Thanks, Fred, KC9QQ -- View this message in context: http://elecraft.365791.n2.nabble.com/KSB2-Problem-with-Assembly-tp7560131.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 Problem with Assembly
Fred, Look carefully, that new manual does not match your KSB2. Yours has an SSM2165 Speech Compressor and the new one uses an SSM2166 - the added resistors support that new IC. As far as the extra 10k resistor, one is supplied with every KSB2 for use as a bias resistor if needed. It is listed in the parts list as a component on the front panel. 73, Don W3FPR On 8/1/2012 3:30 PM, KC9QQ wrote: I am currently in the process of assembly a KSB2 (REV E KSB2 PC Board) which I purchased with my K2 in November 2011. I am currently completing the installation of the resistors on the back side of the board. After I completed installing the resistors I noticed that I had an extra 10K resistor. I then checked my inventory and it showed that I had inventoried 3 10K resistors versus the 2 called for in inventory sheet. Just to be safe I downloaded the latest manual and compared it to my manual. It lists an additional four resistors on the back of the board (R21, R22, R23 and R24). I have two questions: 1. Should I be concerned that these resistors are not on the Rev E board? 2. What is the purpose of the additional resistors? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 screw up --
Just a tail end to what was said about Edsyn. They charge a monumental sum for shipping, BUT they send orders in pre-packs by the most economical method and then they refund the difference back onto your card. They say it's due to a very old website Sorry I didn't mention it before and I hope no-one had a coronary when they saw the cost come up. 73 Dave G3TJP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KSB2 screw up
So I accidentally skipped the first page of instructions then found that I had some parts left over at the end of construction and I was missing the header P1 or whatever, so I grabbed the connector and soldered it inonly to find that the previous owner of my K2 had already put the female connector on the main board of the K2, and I had just accidentally installed the female connector on the KSB2 board. Great. Long story short, I ripped out the female connector on the main board as it was much easier to access but it was a huge to get the male header into the holes. It isn't quite seated all the way but it is stable and straight and seems to work OK with the module installed. Question is: how would one actually go about removing one of these headers correctly (I guess I already know the answer: desoldering station) Already have 1 5w SSB qso down with one of the RT 66 stations and sent 1 wspr tx this morning and was spotted several places on the East coast. It works! :D TJ W0EA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 screw up
Hi TJ, It will be very interesting to see the other answers/recommendations. I use a controlled temp soldering iron, a whole lot of rosin and solder wick. And Quick Chip or Cash Olson has a removal kit that is extra nice too. He's the one that has the solder paste, that works so well. Once in a while, it works well to reflow the board, and pick out the bad part, usually when there is no plastic close at all. The key is a temp contolled iron.Have a great day, --... ...-- Dale - WC7S in Wy From: tom.cam...@gmail.com Date: Tue, 13 Sep 2011 07:50:45 -0500 To: Elecraft@mailman.qth.net Subject: [Elecraft] KSB2 screw up So I accidentally skipped the first page of instructions then found that I had some parts left over at the end of construction and I was missing the header P1 or whatever, so I grabbed the connector and soldered it inonly to find that the previous owner of my K2 had already put the female connector on the main board of the K2, and I had just accidentally installed the female connector on the KSB2 board. Great. Long story short, I ripped out the female connector on the main board as it was much easier to access but it was a huge to get the male header into the holes. It isn't quite seated all the way but it is stable and straight and seems to work OK with the module installed. Question is: how would one actually go about removing one of these headers correctly (I guess I already know the answer: desoldering station) Already have 1 5w SSB qso down with one of the RT 66 stations and sent 1 wspr tx this morning and was spotted several places on the East coast. It works! :D TJ W0EA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 screw up
you can break or cut the plastic between each pin and desolder or heat each one out individually. just take your time. Even a Hakko 808 may have a problem with so many pins. WT5Y -Original Message- From: TJ Campie Sent: Tuesday, September 13, 2011 7:50 AM To: Elecraft Subject: [Elecraft] KSB2 screw up So I accidentally skipped the first page of instructions then found that I had some parts left over at the end of construction and I was missing the header P1 or whatever, so I grabbed the connector and soldered it inonly to find that the previous owner of my K2 had already put the female connector on the main board of the K2, and I had just accidentally installed the female connector on the KSB2 board. Great. Long story short, I ripped out the female connector on the main board as it was much easier to access but it was a huge to get the male header into the holes. It isn't quite seated all the way but it is stable and straight and seems to work OK with the module installed. Question is: how would one actually go about removing one of these headers correctly (I guess I already know the answer: desoldering station) Already have 1 5w SSB qso down with one of the RT 66 stations and sent 1 wspr tx this morning and was spotted several places on the East coast. It works! :D TJ W0EA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 screw up --
Tom... Such things are a pain in the ASCII...and I have made several mistakes of this kinds previously. After fooling around, tearing traces, etc. I have discovered that BY FAR THE BEST way to go about this is to use solder braid. You can buy it in small spools from Radio Shack, or just strip off the cover and core of an old piece of coax. I recommend the former. A desoldering station is not needed! When using the braid, be liberal! Don't try to scrimp and save. The surface tension of melted solder is very high, and capillary action will wick it totally into the braid. Heat the braid over the solder and let it suck up the melt, then move to a new section of braid and repeat. Eventually, you'll clean up quite a bit of solder with a few inches of braid. I know it sounds hokey, but it works VERY well. At the end, there will still probably be a little (tiny!) amount of solder holding one or more pins. With care (and maybe a little help from the XYL or a friend to provide a third hand) you will be able to move one end of the header a bit. From there, it is just a matter of applying a bit of heat at the right places and lifting gently. This same technique works well with DIP packages and with thru-hole components. It is often NOT POSSIBLE to save the component. In the case of DIP devices, you can always cut off the legs to make the removal process easier. In the case of the header you are working on, be careful not to apply so much heat that you melt the plastic around the pins. The secret is patience, NOT lots of heat. Take good care of the traces on the circuit board. A tiny drill-bit can be used to clear remaining solder out of the holes, BUT BE CAREFUL not to cut away the actual hole plating, as this may break a needed connection between the top and bottom layers of the PC board. I use a pin vise for this kind of operation, not a Dremel or other power device. On 9/13/2011 8:50 AM, TJ Campie wrote: ...how would one actually go about removing one of these headers correctly? -- Sent from my lovely old Dell XPS 420 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 screw up
Tom, It won't help you with that task right now since you have already done the deed, but the process is easy. For removing the male headers, you can tug on one pin with pliers while heating the solder - that pin will come out - continue while they are all out. For the female headers, the plastic cover can be removed by prying it up a bit at a time starting with a sharp instrument like a knife edge and progressing to a screwdriver tip. Once the cover is off, remove each of the pins one at a time. Ok, the header pins are removed, but you still have solder to clean up so you can put the new part in - use solder wick to remove as much as you can, but there will likely be some left in the holes. I like to use a stainless steel needle - heat the solder pad and push the needle into the hole. If you do not have a stainless steel needle handy, a wooden toothpick will also work in a similar manner. Even though I have a de-soldering station, I often use the needle method to open the holes. It works for me. 73, Don W3FPR On 9/13/2011 8:50 AM, TJ Campie wrote: Question is: how would one actually go about removing one of these headers correctly (I guess I already know the answer: desoldering station) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 screw up --
John, Each to his own choices, but I would NEVER use a drill of any sort in a thru-plated hole Even if the trace is only on one side (particularly on the component side), I would not take the chance. Consider the situation where the PC trace is only on the component side of the board - you would normally solder on the opposite side, but if the thru-plated hole has been damaged, you must be aware that the lead must be soldered on the component side to complete the circuit - that is often difficult if the component is something like an electrolytic capacitor that sits right down on the board and you cannot solder under it. The only cure is to repair the break with point to point wire. 73, Don W3FPR On 9/13/2011 9:18 AM, John Ragle wrote: A tiny drill-bit can be used to clear remaining solder out of the holes, BUT BE CAREFUL not to cut away the actual hole plating, as this may break a needed connection between the top and bottom layers of the PC board. I use a pin vise for this kind of operation, not a Dremel or other power device. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KSB2 with HM-7 mic question
Thought of something else I ran into last night - I did not have any 820 Ohm resistors to install on the config connector when wiring up for my Icom HM-7 microphone so I used a 1.1k - what are the effects of using a larger value? Should I try to find/make an 820 Ohm resistor or does it matter? TJ W0EA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 screw up --
Don: Well, since you put this out to public view, I will answer in public. Please note my admonition to BE CAREFUL, and my suggestion to use a pin vise, not a powered device. There is no need for a complicated set of rules of behavior when common sense will do. If you are so concerned about damaging the grommet, then please note that the SHANK end of a fine circuit-board drill-bit is just as effective as the stainless steel needle you recommend...it also will not be wetted by the melted solder...and is probably infinitely more available than a stainless needle. The dominant part of my advice was to use solder braid early and often, and that a fancy desoldering station is, in the main, unnecessary for the casual repair of a circuit-board blunder. My suspicion is that most people who do HB construction have the necessary tools at hand. My opinion (since we are talking about personal opinions or choices) is that anyone foolish enough to drill out a thru-plated hole probably doesn't know which end of a screwdriver to hammer on anyhow. John Ragle -- W1ZI = On 9/13/2011 11:48 AM, Don Wilhelm wrote: John, Each to his own choices, but I would NEVER use a drill of any sort in a thru-plated hole Even if the trace is only on one side (particularly on the component side), I would not take the chance. Consider the situation where the PC trace is only on the component side of the board - you would normally solder on the opposite side, but if the thru-plated hole has been damaged, you must be aware that the lead must be soldered on the component side to complete the circuit - that is often difficult if the component is something like an electrolytic capacitor that sits right down on the board and you cannot solder under it. The only cure is to repair the break with point to point wire. 73, Don W3FPR On 9/13/2011 9:18 AM, John Ragle wrote: A tiny drill-bit can be used to clear remaining solder out of the holes, BUT BE CAREFUL not to cut away the actual hole plating, as this may break a needed connection between the top and bottom layers of the PC board. I use a pin vise for this kind of operation, not a Dremel or other power device. __ Elecraft mailing list Home:http://mailman.qth.net/mailman/listinfo/elecraft Help:http://mailman.qth.net/mmfaq.htm Post:mailto:Elecraft@mailman.qth.net This list hosted by:http://www.qsl.net Please help support this email list:http://www.qsl.net/donate.html -- Sent from my lovely old Dell XPS 420 -- Sent from my lovely old Dell XPS 420 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 with HM-7 mic question
Tom, That microphone has an internal amplifier, and the resistor acts as a collector load resistor. I would guess that anything from the recommended 820 ohms up to about 2k would work, but I can't say for sure since I do not have data on the current drawn by the amplifier from a 5 volt supply. If your microphone works, leave it as-is. If it does not (or results in a distorted signal), then change the resistor when you can get one. 73, Don W3FPR On 9/13/2011 12:22 PM, TJ Campie wrote: Thought of something else I ran into last night - I did not have any 820 Ohm resistors to install on the config connector when wiring up for my Icom HM-7 microphone so I used a 1.1k - what are the effects of using a larger value? Should I try to find/make an 820 Ohm resistor or does it matter? TJ W0EA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 screw up --
Don, I worked in a large factory where we had a large rework department and I saw a lot of alternative methods for removing connectors and as you said each to his own. I second, your caution to never use a pin vise and drill. The wall thickness is usually less than 0.001. The odds on getting a correctly sized drill are not good. I once had to change a lot of connectors in the field without the assistance of a rework department. Even after removing the pins I still had a lot of solder in the holes. Because the replacement pins were large the holes had to be cleaned out very well. I mounted the board on edge in a Panavise. Then using a 800 degree small conical tip iron pushed straight into the hole on one side for about 5 seconds, I chased the hole from the other side with a short burst of canned air. Cauntion1: Be sure to wear eye protection because the solder can splatter. If it's done right the iron will collect the excess solder. Caution2: Don't use an overly large or small iron and get on and get off the hole quickly. Too much heat will cook the hole out of the board. It's very fast and the hole cleans up well. 73, Fred, AE6QL -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm Sent: Tuesday, September 13, 2011 8:49 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KSB2 screw up -- John, Each to his own choices, but I would NEVER use a drill of any sort in a thru-plated hole Even if the trace is only on one side (particularly on the component side), I would not take the chance. Consider the situation where the PC trace is only on the component side of the board - you would normally solder on the opposite side, but if the thru-plated hole has been damaged, you must be aware that the lead must be soldered on the component side to complete the circuit - that is often difficult if the component is something like an electrolytic capacitor that sits right down on the board and you cannot solder under it. The only cure is to repair the break with point to point wire. 73, Don W3FPR On 9/13/2011 9:18 AM, John Ragle wrote: A tiny drill-bit can be used to clear remaining solder out of the holes, BUT BE CAREFUL not to cut away the actual hole plating, as this may break a needed connection between the top and bottom layers of the PC board. I use a pin vise for this kind of operation, not a Dremel or other power device. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 screw up
When I built my K1 I actually installed a male connector in the wrong set of holes and was able to successfully remove it without destroying it. I used a large solder sucker (plunger type) and cleared one hole at at time. With a little additional heating and wiggling I was able to pull the header free. I was probably lucky not to have destroyed the board, but it worked. William, AI4VE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 screw up --
I don't think anyone has mentioned my favorite fix the goof soldering tool, a great big vacuum desoldering pump. I use a Soldapult Deluxe that usually cleans the holes right out, without the foul language that solder braid seems to need. Do the experts prefer solder braid, or is that just where the conversation led? 73, Wayne Conrad KF7QGA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 screw up --
Wayne, That is just where the conversation led. I would not trade my Hakko 808 for solder braid - but there are times when solder braid is the best answer, use whatever will do the best job. 73, Don W3FPR On 9/13/2011 4:37 PM, Wayne Conrad wrote: I don't think anyone has mentioned my favorite fix the goof soldering tool, a great big vacuum desoldering pump. I use a Soldapult Deluxe that usually cleans the holes right out, without the foul language that solder braid seems to need. Do the experts prefer solder braid, or is that just where the conversation led? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 screw up --
I have always had great results with the simple Spring loaded solder suckers that you use with your normal iron. There is a bit of technique in using them effectively and it's important to keep the solder sucker well cleaned. In addition to this do ensure it's lubricated once in a while and replace the tip when it gets worn. If using a spring loaded sucker spend some time practising on old PCB boards to perfect your technique before using it on stuff that matters. An added bonus to this practice is that it's an opportunity to add free stock to your junk box. Solder wick has it's place too, one trick with solder wick is to ensure that it's not exposed to the air too much when not in use as this seems to degrade the flux somewhat, so wind excess back into the holder and don't be too stingy about the amount you chop off to start on the next bit of the job. 73 Brendan EI6IZ On Tue, 2011-09-13 at 13:37 -0700, Wayne Conrad wrote: I don't think anyone has mentioned my favorite fix the goof soldering tool, a great big vacuum desoldering pump. I use a Soldapult Deluxe that usually cleans the holes right out, without the foul language that solder braid seems to need. Do the experts prefer solder braid, or is that just where the conversation led? 73, Wayne Conrad KF7QGA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- 73 Brendan EI6IZ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 screw up --
One must be cautious with the solder suckers... have done extensive tests with static discharge from them, and it is well above most active circuit ability to withstand. In other words... using a solder sucker on today's smt will more than even odds pop the circuit in question.So if the socket being taken out, is in any fashion connected to a junction of any type be very aware that upon power up, that particular junction may not act like it is expected to... but much more like a smoked and toasted junction. --... ...-- Dale - WC7S in Wy From: ei6iz.bren...@gmail.com To: elecraft@mailman.qth.net Date: Wed, 14 Sep 2011 00:12:51 +0100 Subject: Re: [Elecraft] KSB2 screw up -- I have always had great results with the simple Spring loaded solder suckers that you use with your normal iron. There is a bit of technique in using them effectively and it's important to keep the solder sucker well cleaned. In addition to this do ensure it's lubricated once in a while and replace the tip when it gets worn. If using a spring loaded sucker spend some time practising on old PCB boards to perfect your technique before using it on stuff that matters. An added bonus to this practice is that it's an opportunity to add free stock to your junk box. Solder wick has it's place too, one trick with solder wick is to ensure that it's not exposed to the air too much when not in use as this seems to degrade the flux somewhat, so wind excess back into the holder and don't be too stingy about the amount you chop off to start on the next bit of the job. 73 Brendan EI6IZ On Tue, 2011-09-13 at 13:37 -0700, Wayne Conrad wrote: I don't think anyone has mentioned my favorite fix the goof soldering tool, a great big vacuum desoldering pump. I use a Soldapult Deluxe that usually cleans the holes right out, without the foul language that solder braid seems to need. Do the experts prefer solder braid, or is that just where the conversation led? 73, Wayne Conrad KF7QGA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- 73 Brendan EI6IZ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 screw up --
I've used the spring type solder sucker for decades and it works well for me. A memorable event in my solder sucking career was the removal of the main right angled multipin connector that had been soldered to the wrong side of a part built K2 RF board. The board was returned to its owner with the same right angled connector soldered on the correct side, allowing construction to continue and to the best of my knowledge, that K2 continues in good health to this day. That was also a mighty tribute to the quality of PCB material that Elecraft specify. Thanks, E. I find that the application of sufficient heat holds the key to a good suck. Sufficient heat is needed to melt the solder on the joint side, through the PTH and on to melt any solder that's gone through to the component side. There's a fine dividing line between sufficient heat and a barbecue, which boils down to experience, lots of practice and is often blessed with a wee bit of luck. I'm currently fitting a K6XX board (thanks, Ron) to a K1 and I didn't like the location shown in the instructions. By moving RP1 and R6 to the other side of the front panel board, a large area is created for the K6XX. There's always a but and in this case, it's the need to separate the front panel PCB from the front panel itself to adjust the detector's audio pitch, but then, it should only need doing once G I have a full size Edsyn Soldapult but find it too big for most requirements, however, Edsyn have a closeout offer on page 7 of their clearance items for a PT509 tool at just $6.99. http://www.edsyn.com/index.php?Mode=prodclear http://www.edsyn.com/index.php?Mode=prodclearpg=7 pg=7 There has to be a catch and it's a $25 minimum order, but if two or three friends combine orders, together with a couple of spare tips on offer at $1.50 each and maybe an O ring or two, that sum is all too easily exceeded. Don't expect Elecraft service from Edsyn. I placed an (overseas) order with them and had to chase it. I tried telephoning, but my North of England-tuned hearing couldn't understand what they were saying. Suffice it to say, the order eventually arrived and I was more than pleased with the smaller device. Chipquik has been mentiond before, but are worthy of another mention, as the Company offer a free sample, which is not to be passed up. Although they focus on SMT technology, there's no reason it can't be used to aid removal of a stubborn pin or two in a multipin device. http://www.chipquik.com/ Much has been said lately about clearing plated through holes as part of a re-work. I find that feeding a bit more fresh solder into a PTH until it is full and then using the solder sucker usually clears the hole extremely well and requires no additional tools. I find solder braid to be a waste of time when clearing holes, but I do use it, after cleaning barbecued flux residue away, to clear solder from flat surfaces, so pads are returned to flatness. If you have a flux pen, run the pen tip over both sides of the unused wick before use. It helps it work even better. 73 Dave G3TJP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 screw up --
Couldn't afford the vacuum kit I wanted, so I built a low end wantabe tool for my desoldering tasks. I have combined a Radio Shack 45-Watt Desoldering Iron https://www.radioshack.com/product/index.jsp?productId=2062731 and one of Radio Shack's (popper styled) Vacuum Desoldering Tool https://www.radioshack.com/product/index.jsp?productId=2062745 I removed the, IMO, useless rubber bulb on the Desoldering Iron and attached a short piece of tubing between where the bulb was removed and the tip of the 'popper' desoldering tool. this way I can apply heat to the location then hit the popper's release hopefully sucking up (most of) the solder residue sometimes I even using the popper as a blower to clear some of the offending solder hold the iron tip in place and push the popper down as though you were going to cock it, but don't complete the stroke to where it catches it's hold position just be sure you don't blow the solder onto another part of a board where you have to remove the mess you just made, don't ask how I know this... Sometimes I have also use the stainless needles as a last resort but be sure the needle is small enough to pass all the way through the hole again with the how do I know this bit. I used a needle a little to fat for the hole and ended up pushing the through hole, through the pcb hole, duh. ymmv GB 73 K5OAI Sam Morgan __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 screw up --
Soldapulit sells an especially marked ESD Safe unit (Mfgr p/n SS750LS). It isn't expensive - somewhere between 9 and 11 USD. Dale is quite right. ESD safety is always something to check on with anything that is brought into contact with modern gear. Ron AC7AC -Original Message- One must be cautious with the solder suckers... have done extensive tests with static discharge from them, and it is well above most active circuit ability to withstand. In other words... using a solder sucker on today's smt will more than even odds pop the circuit in question.So if the socket being taken out, is in any fashion connected to a junction of any type be very aware that upon power up, that particular junction may not act like it is expected to... but much more like a smoked and toasted junction. --... ...-- Dale - WC7S in Wy __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KSB2 being procured
I am in the process of procuring a KSB2 - thank you for the offers. TJ W0EA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KSB2 Resistor Packs
Good Day All, Going through the inventory for the KSB2. RP1 2 are 8pin 101577083272p however I have only got one of these, the other 8 pin is L83C103. Have things changed or have I been sent an incorrect part? Regards Brendon VK8FQRP -- View this message in context: http://elecraft.365791.n2.nabble.com/KSB2-Resistor-Packs-tp6701616p6701616.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 Resistor Packs
Brendon, I would wager that you purchased the KSB2 about 3 months ago. There was a short period of time when only 1 of those R-Paks was placed in the bag. That problem has been corrected by the kiting quality control. I spotted the problem when I found 2 kits with only one 2.7k R-Pak - one kit could be a one-off packing error, but with two kits, it looked more like a bigger problem. Val checked stock and got things fixed. As I recall, that was about 3 months ago, but I can't recall the exact timing. Contact pa...@elecraft.com and ask for the 2nd 2.7k R-Pak, it should be sent to you promptly. 73, Don W3FPR On 8/18/2011 9:37 PM, vk8fqrp wrote: Good Day All, Going through the inventory for the KSB2. RP1 2 are 8pin 101577083272p however I have only got one of these, the other 8 pin is L83C103. Have things changed or have I been sent an incorrect part? Regards Brendon VK8FQRP -- View this message in context: http://elecraft.365791.n2.nabble.com/KSB2-Resistor-Packs-tp6701616p6701616.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 Resistor Packs
Thanks for the reply Don, Will send off an email. Regards Brendon -- View this message in context: http://elecraft.365791.n2.nabble.com/KSB2-Resistor-Packs-tp6701616p6701798.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KSB2 Question
Hi All! I have subscribed to this list in the past when I was working on my K1-4 a few year back. I just recently broke down and bought a K2 (10 W) s/n 7164. I'm long overdue to get one, but I figured it was now or never. I am planning on using this rig as a CW only QRP radio. I am not even going to install the mic connector. I have some sheet metal I am going to use to cover the holes for the options I did not get. I am mostly a CW only operator (kind of strange for a 34 y/o), but I do like to listen to SSB when I am just messing around in my shack. I was wondering if the KSB2 option would be worthwhile to get, AND does it affect the K2's performance if you don't align it for transmit? Any feedback would be appreciated. Thanks 73, David, KC9EHQ K1-4 s/n 2051 K2 s/n 7164 (starting build soon!) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 Question
David, If you are considering the KSB2, I would suggest you install it and the mic jack - it will be ready if you ever decide to try out some digital mode. 73, Don W3FPR On 5/29/2011 3:34 PM, David Dietrich wrote: Hi All! I have subscribed to this list in the past when I was working on my K1-4 a few year back. I just recently broke down and bought a K2 (10 W) s/n 7164. I'm long overdue to get one, but I figured it was now or never. I am planning on using this rig as a CW only QRP radio. I am not even going to install the mic connector. I have some sheet metal I am going to use to cover the holes for the options I did not get. I am mostly a CW only operator (kind of strange for a 34 y/o), but I do like to listen to SSB when I am just messing around in my shack. I was wondering if the KSB2 option would be worthwhile to get, AND does it affect the K2's performance if you don't align it for transmit? Any feedback would be appreciated. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 Question
At 12:34 PM 5/29/2011 -0700, you wrote: Hi All! I have subscribed to this list in the past when I was working on my K1-4 a few year back. I just recently broke down and bought a K2 (10 W) s/n 7164. I'm long overdue to get one, but I figured it was now or never. I am planning on using this rig as a CW only QRP radio. I am not even going to install the mic connector. I have some sheet metal I am going to use to cover the holes for the options I did not get. I am mostly a CW only operator (kind of strange for a 34 y/o), but I do like to listen to SSB when I am just messing around in my shack. I was wondering if the KSB2 option would be worthwhile to get, AND does it affect the K2's performance if you don't align it for transmit? Any feedback would be appreciated. Thanks 73, David, KC9EHQ K1-4 s/n 2051 K2 s/n 7164 (starting build soon!) Hi David' Aside from SSB the KSB2 module is required for the DATA mode. I also like CW ... but with low pwr PSK31 is a wonderful mode and personally wouldn't want to do without it. Jim, VE3CI __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 build time?
TJ, If you are doing it for the first time, give yourself 8 to 12 hours for the whole task. As Alan Wilcox has said, use Specrtrogram for alignment, and become familiar with its use beforehand since you have a deadline. The use of Spectrogram 5.17 (and its download) is available from Tom Hammond's website www.n0ss.net. Additional information on the use of Spectrogram is in the K2 Dial Calibration article on my website www.w3fpr.com. Note: if you are running Windows 7, Spectrogram 5.17 will not work - Spectrogram 16 (also freeware) will work fine. If you cannot locate it on-line, drop me a private email and I can send you a Zip file containing it. 73, Don W3FPR On 5/5/2011 1:35 PM, TJ Campie wrote: How long do you think it should take to complete a KSB2 including tuning and such? I plan on getting one at Dayton and would like to have it done in 3 or 4 evenings so I can use it when I do a SOTA activation over memorial day weekend. (which I leave for Thursday night) So figure 4 hours a night? I looked through the manual, it doesnt look like it'd take more than a few hours to assemble. TJ - W0EA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KSB2 build time?
How long do you think it should take to complete a KSB2 including tuning and such? I plan on getting one at Dayton and would like to have it done in 3 or 4 evenings so I can use it when I do a SOTA activation over memorial day weekend. (which I leave for Thursday night) So figure 4 hours a night? I looked through the manual, it doesnt look like it'd take more than a few hours to assemble. TJ - W0EA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 build time?
Hi Tom, I'm a slow and methodical constructor and the KSB2 took me 8 hours to build, over 4 nights. What took a bit of time for me was the BFO alignment to optimise TX audio, configuring the filters etc. I found Spectrogram very helpful. I did a lot of monitoring and recording to get the TX audio the way I like it. Because this was my first experience doing this sort of alignment, it took me maybe 4 hours all up until I was happy. It would take very little time the second time round or for someone experienced. There are some good tips in the archives about set up of the K2 after installing the KSB2. I must say that I have several rigs and too many microphones and headsets and I do use outboard audio equalisation on some of them. I also have a K3 with its on-board 8 band EQ. BUT - the rig that attracts the most unsolicited positive comments about TX audio is the little K2/100. People comment great audio - what are you running?! And it's my K2 with the MH2 hand mic. I rarely hear that using my other set-ups and so I wonder why I bother with all the other audio paraphernalia. Enjoy building. John VK7JB -- View this message in context: http://elecraft.365791.n2.nabble.com/KSB2-build-time-tp6335019p6336158.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 build time?
TJ, If you've built kits before, you should have plenty of time to get it done. Enjoy the build! You might want to order some toroids from Mychael, The Toroid Guy, ahead of time so you have them ready. Watch that you put the diodes in properly. I always fold the top lead down on all of them before I start putting them in. You'll need Spectrogram for the tuneup. If you haven't used it before, get familiar with it before you get into the last day or so of your available time. You don't need the KSB2 to get in some early practice on your K2. Cheers, Alan Alan D. Wilcox, W3DVX (K2-5373, K3-40) 570-321-1516 http://WilcoxEngineering.com http://eBookEditor.net https://www.smashwords.com/books/view/28062?ref=awilcox Williamsport, PA 17701 On 5/5/11 1:35 PM, TJ Campie wrote: How long do you think it should take to complete a KSB2 including tuning and such? I plan on getting one at Dayton and would like to have it done in 3 or 4 evenings so I can use it when I do a SOTA activation over memorial day weekend. (which I leave for Thursday night) So figure 4 hours a night? I looked through the manual, it doesnt look like it'd take more than a few hours to assemble. TJ - W0EA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 build time?
Tom, John's comments are right on for the entire process of building, installing and doing the alignment. The building is not a problem, it just depends on your construction methods - if you are a insert one component and then solder it type of builder, it will take you longer than those who stuff a group of components and then solder. As for John's statements about the use of Spectrogram to align the OP1 filter, yes, I highly recommend that method. Put a Spectrogram marker at 300 Hz and adjust the BFO so the approximate -3dB point on the low frequency passband skirt is positioned at 300 Hz, and you will have quite a reasonable filter for both transmit and receive - no need to set up FL2 using OP1 for a separate receive filter as is sometimes suggested - that is only necessary for those having a highly unusual vocal frequency span. I set all K2s that I repair in that manner, and have never received any complaints, but have often received compliments because the on-air audio reports of my customers have been quite positive. 73, Don W3FPR On 5/5/2011 8:58 PM, VK7JB wrote: Hi Tom, I'm a slow and methodical constructor and the KSB2 took me 8 hours to build, over 4 nights. What took a bit of time for me was the BFO alignment to optimise TX audio, configuring the filters etc. I found Spectrogram very helpful. I did a lot of monitoring and recording to get the TX audio the way I like it. Because this was my first experience doing this sort of alignment, it took me maybe 4 hours all up until I was happy. It would take very little time the second time round or for someone experienced. There are some good tips in the archives about set up of the K2 after installing the KSB2. I must say that I have several rigs and too many microphones and headsets and I do use outboard audio equalisation on some of them. I also have a K3 with its on-board 8 band EQ. BUT - the rig that attracts the most unsolicited positive comments about TX audio is the little K2/100. People comment great audio - what are you running?! And it's my K2 with the MH2 hand mic. I rarely hear that using my other set-ups and so I wonder why I bother with all the other audio paraphernalia. Enjoy building. John VK7JB -- View this message in context: http://elecraft.365791.n2.nabble.com/KSB2-build-time-tp6335019p6336158.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KSB2 Setup issue
Got my KSB2 to the point where I am running the BFO setup for LSB/USB, i get all the way thru setting the LSB/BF!t frequency, I hit band- to return to the BFO parameter display, but when i hit mode to change the mode I am getting an info 230 message, and they K2 kicks me out of the menu without saving the settings. Not sure where to go from here, guidance would be appreciated. Matt W8ESE Former KD8DAO http://blog.MattIsKichigai.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 Setup issue
Discovered my freq counter probe is intermittent, trying to fix, but ordered a new one from elecraft just in case, guess i'll have to shelve the k2 until the new one arrives. Matt W8ESE Former KD8DAO http://blog.MattIsKichigai.com On Sat, May 2, 2009 at 12:14 PM, Matt Palmer kd8...@gmail.com wrote: Got my KSB2 to the point where I am running the BFO setup for LSB/USB, i get all the way thru setting the LSB/BF!t frequency, I hit band- to return to the BFO parameter display, but when i hit mode to change the mode I am getting an info 230 message, and they K2 kicks me out of the menu without saving the settings. Not sure where to go from here, guidance would be appreciated. Matt W8ESE Former KD8DAO http://blog.MattIsKichigai.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KSB2 Setup issue
Matt, Check the crimp pins in the connector housing - that is the most common place for the probe to fail. The pins must be inserted correctly into the housing and the small tabs must lock into the rectangular holes in the side of the housing. If the wire has been inserted too far into the crimp pin, the contact will not work correctly and will be deformed the first time you plug it into the mating header. 73, Don W3FPR Matt Palmer wrote: Discovered my freq counter probe is intermittent, trying to fix, but ordered a new one from elecraft just in case, guess i'll have to shelve the k2 until the new one arrives. Matt W8ESE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KSB2
Curt, I have 2 K2s and both have the KSB2 option. First, Installing the SSB option and aligning it correctly doesn't reduce the K2's effectiveness in the CW mode, in fact it inhances it. Second, This option opens the door to digital, SSB and sstv communications. If your K2 is stock CW then you have to remove the front panel to install the mic circuit components which is a pain but easily done. You will be glad you install this option (even if you don't use SSB). 73 Dave KD1NACompleted K2 s/n 6424 a few months back, am thinking of adding a KSB2 adapter kit I own. I've seen several threads indicating that the SSB performance of the K2 with the adapter isn't very good. Would adding this capability be worthwhile, or is leaving the K2 as CW only a better option? 73, Curt KB5JO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 INSTALL - RX LOST
Just throwing this out there while I start backtracking to figure it out. I have installed the K160RX, KAT2, KBT2 and now the KSB2. Prior to install I was able to hear activity on the bands. After install I could hear very few stations. On the ones that I could hear, it was barely so even with full AF gain and the SWR meter would barely deflect. This AM a friend tried to TX on 40m at 5, 10 and 50 Watts. So it seems I have induced a deafness problem. I have also installed the Elecraft mic with the Rbias resister and jumpers. I was missing one jumper but used one from my computer junk box. It was slightly different as it does not have a top like the ones Elecraft provided. I include this on the off chance this might mean something to those of you far more experienced and knowledgeable than I. I have attempted to TX into a dummy load and I get dot deflections on the SWR meter in the 5-7 range but a separate watt meter indicates well below the set power. Anyway, if anyone has any thoughts on tracking down this gremlin they are certainly welcome. Thanks 73's, Chris K7CJA K2#4662 -- View this message in context: http://www.nabble.com/KSB2-INSTALL---RX-LOST-tp17258436p17258436.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KSB2 INSTALL - RX LOST
Chris, Track down the receive problem first - it is not related to either the mic wiring or the transmit path. The problem is on the KSB2 board. First thing to check is the orientation of the diodes on the KSB2 board - all the cathodes (marked ends) should be mounted away from the board. The second thing to check is the windings of RFC1 and RFC2 - if you scraped the wire insulation on the core when winding the toroids, the bare wire can short to the crystal cans and ground out the signal. Take a thin strip of paper and insert it between the toroids and the crystals to check for that condition. Be certain you soldered all the pins of P2 and P3 (and the corresponding headers on the RF Board). As a check on the integrity of the receive path of the basic K2, try removing the KSB2 board and insert a wire jumper between pins 1 and 3 on both J9 and J10 on the RF board. The receiver should become functional - if not, you inadvertently disturbed something on the RF Board during the KSB2 installation. If one of those suggestions does not reveal the trouble, it is time for some in-depth troubleshooting. Get out the DMM and ask about it again. 73, Don W3FPR MTcja wrote: Just throwing this out there while I start backtracking to figure it out. I have installed the K160RX, KAT2, KBT2 and now the KSB2. Prior to install I was able to hear activity on the bands. After install I could hear very few stations. On the ones that I could hear, it was barely so even with full AF gain and the SWR meter would barely deflect. This AM a friend tried to TX on 40m at 5, 10 and 50 Watts. So it seems I have induced a deafness problem. I have also installed the Elecraft mic with the Rbias resister and jumpers. I was missing one jumper but used one from my computer junk box. It was slightly different as it does not have a top like the ones Elecraft provided. I include this on the off chance this might mean something to those of you far more experienced and knowledgeable than I. I have attempted to TX into a dummy load and I get dot deflections on the SWR meter in the 5-7 range but a separate watt meter indicates well below the set power. Anyway, if anyone has any thoughts on tracking down this gremlin they are certainly welcome. Thanks 73's, Chris K7CJA K2#4662 No virus found in this incoming message. Checked by AVG. Version: 8.0.100 / Virus Database: 269.23.16/1434 - Release Date: 5/15/2008 7:24 AM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KSB2 INSTALL - RX LOST
Hi Glenn: FB on all this. I LOVE the idea of a hard number of paid members such as 11 for club business. All I saw was a typo or two - checks for club rather than 'cub' business. HI Also you have two instances of the word 'next' in one sentence to describe the 2 readings. Change the last instance to 'following'. We may still want to define VE session member a bit further. I believe there was a YL that passed here Tech this last time from Humboldt - technically she is an RARC member by definition. We could simply send an email to those folks upon passage of their tech stating that they would need to be at X meetings to 'activate' such a membership, or maybe just the return of the email to signify they want this membership, or some variance in between. 73, Jamie WB4YDL -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of MTcja Sent: Thursday, May 15, 2008 12:27 PM To: elecraft@mailman.qth.net Subject: [Elecraft] KSB2 INSTALL - RX LOST Just throwing this out there while I start backtracking to figure it out. I have installed the K160RX, KAT2, KBT2 and now the KSB2. Prior to install I was able to hear activity on the bands. After install I could hear very few stations. On the ones that I could hear, it was barely so even with full AF gain and the SWR meter would barely deflect. This AM a friend tried to TX on 40m at 5, 10 and 50 Watts. So it seems I have induced a deafness problem. I have also installed the Elecraft mic with the Rbias resister and jumpers. I was missing one jumper but used one from my computer junk box. It was slightly different as it does not have a top like the ones Elecraft provided. I include this on the off chance this might mean something to those of you far more experienced and knowledgeable than I. I have attempted to TX into a dummy load and I get dot deflections on the SWR meter in the 5-7 range but a separate watt meter indicates well below the set power. Anyway, if anyone has any thoughts on tracking down this gremlin they are certainly welcome. Thanks 73's, Chris K7CJA K2#4662 -- View this message in context: http://www.nabble.com/KSB2-INSTALL---RX-LOST-tp17258436p17258436.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com E-mail message checked by Spyware Doctor (5.5.1.322) Database version: 5.09830e http://www.pctools.com/en/spyware-doctor/ E-mail message checked by Spyware Doctor (5.5.1.322) Database version: 5.09840e http://www.pctools.com/en/spyware-doctor/ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KSB2 INSTALL - RX LOST
Have you checked the obvious things? I feel qualified offering the following suggestions as I've made all of these mistakes myself :-) - Make sure the antenna is plugged into the right connector. If your KAT2 is connected, use one of the Antenna Tuner connectors on the back side of the top panel. If the KAT2 is NOT connected, use the Antenna connector on the back of the bottom cover next to the power connector. - Make sure the KAT2 RF cable (J7) is connected to P6 on the RF board. (I don't know if it's changed, but it used to be that the RF connector (P6) and the battery connector (P3) were the same. There are warnings in the manual about getting them mixed up.) - Make sure the KAT2 control cable (J8) is plugged into P4 on the Control Board correctly. The green wire should be at the top. 73 -- Joe KB8AP On May 15, 2008, at 10:26 AM, MTcja wrote: Just throwing this out there while I start backtracking to figure it out. I have installed the K160RX, KAT2, KBT2 and now the KSB2. Prior to install I was able to hear activity on the bands. After install I could hear very few stations. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KSB2 INSTALL - RX LOST
This sounds a lot like a problem I had installing the KNB2 (which still isn't solved, regrettably). The cables between the top cover and the main boards of the K2 have a variety of connections, and they can get flexed in taking the cover off. In my case, the ground shield broke at the KAT2 -- somehow this allowed strong signals to leak through anyway, giving a mostly deaf K2. Resoldering the shield and removing the KNB2 restored full receive. (I'm still slowly trying to figure out what's wrong with the KNB2). Tracking the complete receive path is hard. Look first for bad connections where signals go in or out of the added modules. And keep telling yourself you'll get it working perfectly someday ... Peter N8MHD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KSB2 INSTALL - RX LOST
Oh, forgot about rAnt. Make sure you didn't accidentally turn on rAnt (the receive-only antenna you get with the K160RX option) in the menu. It's right next to the CAL menu item and I've accidentally turned it on while calibrating the filters. 73 -- Joe KB8AP On May 15, 2008, at 11:34 AM, Joe Planisky wrote: Have you checked the obvious things? I feel qualified offering the following suggestions as I've made all of these mistakes myself :-) - Make sure the antenna is plugged into the right connector. If your KAT2 is connected, use one of the Antenna Tuner connectors on the back side of the top panel. If the KAT2 is NOT connected, use the Antenna connector on the back of the bottom cover next to the power connector. - Make sure the KAT2 RF cable (J7) is connected to P6 on the RF board. (I don't know if it's changed, but it used to be that the RF connector (P6) and the battery connector (P3) were the same. There are warnings in the manual about getting them mixed up.) - Make sure the KAT2 control cable (J8) is plugged into P4 on the Control Board correctly. The green wire should be at the top. 73 -- Joe KB8AP On May 15, 2008, at 10:26 AM, MTcja wrote: Just throwing this out there while I start backtracking to figure it out. I have installed the K160RX, KAT2, KBT2 and now the KSB2. Prior to install I was able to hear activity on the bands. After install I could hear very few stations. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KSB2 INSTALL - RX LOST
Elecrafter's: I have no idea how this ended up on this list. My apologies. 73, Jamie WB4YDL -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of James C. Hall, MD Sent: Thursday, May 15, 2008 12:53 PM To: 'MTcja'; elecraft@mailman.qth.net Subject: RE: [Elecraft] KSB2 INSTALL - RX LOST Hi Glenn: FB on all this. I LOVE the idea of a hard number of paid members such as 11 for club business. All I saw was a typo or two - checks for club rather than 'cub' business. HI Also you have two instances of the word 'next' in one sentence to describe the 2 readings. Change the last instance to 'following'. We may still want to define VE session member a bit further. I believe there was a YL that passed here Tech this last time from Humboldt - technically she is an RARC member by definition. We could simply send an email to those folks upon passage of their tech stating that they would need to be at X meetings to 'activate' such a membership, or maybe just the return of the email to signify they want this membership, or some variance in between. 73, Jamie WB4YDL -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of MTcja Sent: Thursday, May 15, 2008 12:27 PM To: elecraft@mailman.qth.net Subject: [Elecraft] KSB2 INSTALL - RX LOST Just throwing this out there while I start backtracking to figure it out. I have installed the K160RX, KAT2, KBT2 and now the KSB2. Prior to install I was able to hear activity on the bands. After install I could hear very few stations. On the ones that I could hear, it was barely so even with full AF gain and the SWR meter would barely deflect. This AM a friend tried to TX on 40m at 5, 10 and 50 Watts. So it seems I have induced a deafness problem. I have also installed the Elecraft mic with the Rbias resister and jumpers. I was missing one jumper but used one from my computer junk box. It was slightly different as it does not have a top like the ones Elecraft provided. I include this on the off chance this might mean something to those of you far more experienced and knowledgeable than I. I have attempted to TX into a dummy load and I get dot deflections on the SWR meter in the 5-7 range but a separate watt meter indicates well below the set power. Anyway, if anyone has any thoughts on tracking down this gremlin they are certainly welcome. Thanks 73's, Chris K7CJA K2#4662 -- View this message in context: http://www.nabble.com/KSB2-INSTALL---RX-LOST-tp17258436p17258436.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com E-mail message checked by Spyware Doctor (5.5.1.322) Database version: 5.09830e http://www.pctools.com/en/spyware-doctor/ E-mail message checked by Spyware Doctor (5.5.1.322) Database version: 5.09840e http://www.pctools.com/en/spyware-doctor/ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com E-mail message checked by Spyware Doctor (5.5.1.322) Database version: 5.09840e http://www.pctools.com/en/spyware-doctor/ E-mail message checked by Spyware Doctor (5.5.1.322) Database version: 5.09840e http://www.pctools.com/en/spyware-doctor/ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2: Accidentally reversed RP2 - OK?
I was staying up a bit too late last night, assembling my KSB2, and accidentally installed the 2.7K resistor network RP2 reversed (pin1 is where pin 8 should be, etc.). Now, if RP2 simply consists of four equal and individual resistors (pins 1-2, 3-4, 5-6, 7-8) I would believe this does not matter. Furthermore, the symmetry of this part of the KSB2 circuit would also support this. I don't like taking up the soldering iron and desoldering pump to fix something that does not need messing with. So, it would be reassuring to hear if any one seconds my conclusion to leave RP2 as is... 73 - Kristinn, TF3KX -- View this message in context: http://www.nabble.com/KSB2%3A-Accidentally-reversed-RP2---OK--tp17242103p17242103.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KSB2: Accidentally reversed RP2 - OK?
Kristinn: Looks like the resistor gods were with you this time. If you look at the schematic for the KSB2, you'll see (upper right corner) that RP2 is 4 separate resistors with no pins in common (1-2, 3-4, 5-6, 7-8), so you can keep RP2 installed reversed. The same is true for RP1. HOWEVER, RP5, for example, has a common pin (pin 1), so if you had reversed RP5, you would have had to desolder it and install it correctly. Good luck with the rest of the installation, but watch out for those polarizing markings! They are usually there for a reason. 73's, John AA0VE TF3KX wrote: I was staying up a bit too late last night, assembling my KSB2, and accidentally installed the 2.7K resistor network RP2 reversed (pin1 is where pin 8 should be, etc.). Now, if RP2 simply consists of four equal and individual resistors (pins 1-2, 3-4, 5-6, 7-8) I would believe this does not matter. Furthermore, the symmetry of this part of the KSB2 circuit would also support this. I don't like taking up the soldering iron and desoldering pump to fix something that does not need messing with. So, it would be reassuring to hear if any one seconds my conclusion to leave RP2 as is... 73 - Kristinn, TF3KX ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KSB2 mic hook up
Hi Robert, Correct, just had the side off #1400 to check. Regards, Mike VP8NO - Original Message - From: Robert 'RC' Conley [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Wednesday, January 02, 2008 10:24 PM Subject: [Elecraft] KSB2 mic hook up | I'm installing the KSB2 in K2-#6321. I'm using A Kenwood MC-43S Mic | from my TS 850S. | It looks like all the pins are wired straight across EXCEPT PINS 5 6 | 6 WHICH ARE NOT | JUMPED if I'm reading it right | RC kc5wa ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 mic hook up
I'm installing the KSB2 in K2-#6321. I'm using A Kenwood MC-43S Mic from my TS 850S. It looks like all the pins are wired straight across EXCEPT PINS 5 6 6 WHICH ARE NOT JUMPED if I'm reading it right RC kc5wa ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KSB2 sidetone?
Chris, I cannot relate 'sidetone in the headset' with SSB operation. In CW, there is a sidetone presented to the headphones or speaker which follows the keying, but there is nothing of that sort for SSB. If you lost your CW sidetone while using the K2 memory, that is quite another matter. The K3 does provide a means of monitoring the transmitted audio (but that is not a sidetone), but the K2 does not - an external receiver with a short antenna while the K2 is operating into a dummy load can be used to listen to your transmitted audio. As far as the 'murmur', please try to be more descriptive - I can only guess that it might be either room noise pickup by the microphone or it could be incomplete carrier suppression or possibly some sort of RF Feedback due to 'RF in the shack'. If you have an oscilloscope or other means of detecting a low level RF signal, you can set the carrier balance pot with more precision than by using the method described in the manual. Do not connect a microphone but do connect a key or paddle - connect the 'scope or other detector across a dummy load. Then go to LSB mode and close the dot paddle or handkey and adjust the carrier balance pot for minimum carrier - switch to USB and check the carrier balance again - you may have to go back and forth between LSB and USB to obtain the lowest compromise setting for both sidebands. Properly adjusted, the K2 carrier balance is excellent. You may also want to re-check your OP1 passband setting using Spectrogram. It is important to place the low frequency corner (-3dB point) of the passband close to the 300 Hz point for both LSB and USB. If you have the stock 2.4 kHz SSB filter, set the Spectrogram markers at 300 and 2600 and center the passband between those markers and it will normally be correct for both transmit and receive. See the filter setting information in part 3 of my K2 dial calibration article on my website http://w3fpr.qrpradio.com for additional information about using Spectrogram for setting the SSB filters. 73, Don W3FPR Chris Kantarjiev wrote: Even though I built and installed a KSB2 a year or so ago, this week is the first time I've actually used it. I have to admit, phone operation is sort of fun, though I'm not likely to spend much time outside contests doing it - altogether too much like a telephone. One question: there doesn't seem to be any sidetone in the headset when I transmit. I made some recordings of my audio output (to play back for W7GH, who was also testing out his KSB2), and we both noticed that there is some ... murmuring when I'm transmitting, but nothing intelligible. I thought the lack of sidetone would be an issue, but it doesn't seem to be. Still, I'm curious - what's the murmuring? Should there be audible sidetone? ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KSB2 sidetone?
I cannot relate 'sidetone in the headset' with SSB operation. In CW, there is a sidetone presented to the headphones or speaker which follows the keying, but there is nothing of that sort for SSB. The K3 does provide a means of monitoring the transmitted audio (but that is not a sidetone) FWIW I'm a pilot and the transceivers we use in airplanes to communicate with the ground all have audio sidetone that feeds back into the headset. Your telephone has sidetone that feeds your voice back to the earpiece. In both cases this feature is called sidetone. See http://en.wikipedia.org/wiki/Sidetone and http://www8.garmin.com/manuals/SL30Nav_Comm_UserGuide.pdf (page 32). Craig NZ0R ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KSB2 sidetone?
The reason for sidetone is that it makes talking much easier if you can hear your own voice. Early telephones could easily be made to have no sidetone, but it was found that the user found it difficult to speak properly, so some of their voice was fed back just for this purpose. If you have tried speaking over the internet with a loudspeaker, you quickly build up several echoes as your sidetone and your respondent's sidetone build up, so, headphones are almost mandatory. If your headphones are for hi fi, they may have little attenuation of the surroundings, such as my Sennheiser, but communications headphones are usually made to keep out extraneous noise and that's when you need sidetone. It's up to 20dB down, but nice if this is adjustable to taste and local conditions. David G3UNA - Original Message - From: Craig Rairdin [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Monday, November 19, 2007 3:08 PM Subject: RE: [Elecraft] KSB2 sidetone? I cannot relate 'sidetone in the headset' with SSB operation. In CW, there is a sidetone presented to the headphones or speaker which follows the keying, but there is nothing of that sort for SSB. The K3 does provide a means of monitoring the transmitted audio (but that is not a sidetone) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KSB2 sidetone?
Everybody has sidetone. When you record your voice and play it back you'll notice it doesn't sound the same as you hear yourself because you hear your speech returning through your skull bones. While wearing headphones you're hearing the murmur or sidetone if you will returning through your skull bones I've heard this murmur with every transceiver I've ever owned On Nov 19, 2007 9:31 AM, David Cutter [EMAIL PROTECTED] wrote: The reason for sidetone is that it makes talking much easier if you can hear your own voice. Early telephones could easily be made to have no sidetone, but it was found that the user found it difficult to speak properly, so some of their voice was fed back just for this purpose. If you have tried speaking over the internet with a loudspeaker, you quickly build up several echoes as your sidetone and your respondent's sidetone build up, so, headphones are almost mandatory. If your headphones are for hi fi, they may have little attenuation of the surroundings, such as my Sennheiser, but communications headphones are usually made to keep out extraneous noise and that's when you need sidetone. It's up to 20dB down, but nice if this is adjustable to taste and local conditions. David G3UNA - Original Message - From: Craig Rairdin [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Monday, November 19, 2007 3:08 PM Subject: RE: [Elecraft] KSB2 sidetone? I cannot relate 'sidetone in the headset' with SSB operation. In CW, there is a sidetone presented to the headphones or speaker which follows the keying, but there is nothing of that sort for SSB. The K3 does provide a means of monitoring the transmitted audio (but that is not a sidetone) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 sidetone?
Even though I built and installed a KSB2 a year or so ago, this week is the first time I've actually used it. I have to admit, phone operation is sort of fun, though I'm not likely to spend much time outside contests doing it - altogether too much like a telephone. One question: there doesn't seem to be any sidetone in the headset when I transmit. I made some recordings of my audio output (to play back for W7GH, who was also testing out his KSB2), and we both noticed that there is some ... murmuring when I'm transmitting, but nothing intelligible. I thought the lack of sidetone would be an issue, but it doesn't seem to be. Still, I'm curious - what's the murmuring? Should there be audible sidetone? 73 de chris K6DBG ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KSB2 OP1 filter USB response...
--- Steve Kallal [EMAIL PROTECTED] wrote: It has been a few weeks since I built the KSB2 option. There is one problem I haven't yet resolved. The response on the USB side of OP1 is not as broad as the LSB side, and has a narrower peak. Hi Steve. Assuming your KSB2 is working properly, what you are seeing may very well be a familiar characteristic of the crystal ladder filter used in the rig. I ran some sweeps of my K2/100 several years ago, the results of which clearly illustrate this effect. Response vs. frequency plots may be found here: http://www.qsl.net/kd2bd/ksb2.html The response is slightly asymmetric, with the roll-off being noticeably sharper on one side of the passband than the other. This is normal. The side with the sharper roll-off will (in my opinion) ring more than the gentler side. As such, audio products that hit the sharper edge may appear to be over-emphasized, so it might be beneficial to tailor your microphone's audio response and the BFO frequencies to avoid hitting this edge with too much audio. Also, be aware that due to the mixing scheme of the transceiver, the audio characteristics you observed are not only a product of the sideband selected, but also the frequency band you've on as well. 73, de John, KD2BD Visit John on the Web at: http://kd2bd.ham.org/ . . . . Shape Yahoo! in your own image. Join our Network Research Panel today! http://surveylink.yahoo.com/gmrs/yahoo_panel_invite.asp?a=7 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 OP1 filter USB response...
It has been a few weeks since I built the KSB2 option. There is one problem I haven't yet resolved. The response on the USB side of OP1 is not as broad as the LSB side, and has a narrower peak. I didn't pay much attention to this before. I've never transmitted in USB except for the digital modes using RTTY reverse. I'm not much of a SSB guy. These observations were made with the Spectrogram software. The symptoms are quite noticeable by listening also. 73, Steve N6VL K2 #2289 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KSB2 OP1 filter USB response...
Steve, Tell us more. The SSB OP1 filter as observed with Spectrogram in LSB or USB should show a relatively flat passband extending from about 300 Hz to 2600 Hz. I do not understand 'peak' in that context. It may be that your BFO frequencies are not adjusted properly, but your use of the 'peak' term causes some doubt about what you are observing. Can you be more specific and descriptive? 73, Don W3FPR Steve Kallal wrote: It has been a few weeks since I built the KSB2 option. There is one problem I haven't yet resolved. The response on the USB side of OP1 is not as broad as the LSB side, and has a narrower peak. I didn't pay much attention to this before. I've never transmitted in USB except for the digital modes using RTTY reverse. I'm not much of a SSB guy. These observations were made with the Spectrogram software. The symptoms are quite noticeable by listening also. 73, Steve N6VL K2 #2289 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KSB2 No Transmit Audio
Mark, The path through Q1 is only used in CW mode to make the path from the BFO to the Transmit Mixer (on the RF Board) complete - that circuitry replaces C167 which you removed from the RF board. For SSB, the Balanced modulator signal goes 'backwards' through the filter and is applied to Q2 where it should find its way back to the RF board and on to the transmit mixer. Be certain the TXC signal is operating correctly - it should be near 6 volts during CW transmit and near zero during SSB transmit. If you need more detailed info, please ask. I do not know of a document with that level of detail other than the schematic. 73, Don W3FPR Beth Wenzel wrote: Hi guys, i built my k2 about a year and a half ago, I've recently decided to add a Ksb2, all wen together well, but... alas it doesn't work. I've checked all of the signal voltages, everything is ok. I've traced (with an o-scope) a nice looking modulated signal to the top of D3, then nothing. Checking D3 in circuit it looks ok (.6 ohm forward, 100k reverse) I'm assuming the sig should pass through to the base of Q3 (?). ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 No Transmit Audio
Hi guys, i built my k2 about a year and a half ago, I've recently decided to add a Ksb2, all wen together well, but... alas it doesn't work. I've checked all of the signal voltages, everything is ok. I've traced (with an o-scope) a nice looking modulated signal to the top of D3, then nothing. Checking D3 in circuit it looks ok (.6 ohm forward, 100k reverse) I'm assuming the sig should pass through to the base of Q3 (?). Is there a circuit description that can help me with the trace? 73 AB9LZ Mark, ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 Kit Resistor query
Hi, Just got to the step in the control panel where, if you are also planning to fit the KSB2 board, you add some of the optional components to the control board. On the KSB2 instructions, page 16, it says R13 is 68.1k - and also in the inventory on page 3 it gives the same value for this resistor. Trouble is, I don't have a resistor that value in the bag. I do have one of 64k but that's it. I can't seem to find a 64k resistor elsewhere in the inventory so I'm guessing (again) that this is a substitute. Anyone know for sure? Thanks Denis MW0CBC/GW8OQV ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 Fine Carrier Adjustment
Thanks to Jerry, WA2DKG, I got past the Deaf K2 by plugging the speaker into the P5 on the RF board vs. the Control Board. I'm not sure how or where I missed that it should be plugged in there, but it works, so things weren't shorted after all on the KSB2 board. Now I'm at the Fine Carrier Balance Adjustment section (Page 19 in the KSB2 Manual), and am not sure how to hear the K2's transmitted signal on a external receiver. Since the K2 is connected to a dummy load, am I to run a short piece of wire from the external receiver and locate it near the dummy load to hear this? Thanks, Steve NE7RD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Fwd: Re: [Elecraft] KSB2 Fine Carrier Adjustment]
I noticed this did not go to the list - I intended it to! 73, Don W3FPR Original Message Steve, Yes, just put a short length of wire on the other receiver and adjust the spacing, length of antenna and other things so you get about an S-9 or just a bit higher signal on the receiver with a CW signal - then you can switch to SSB and find the carrier. Adjust the pot until you have the smallest amount of carrier. If you have a 'scope with a 10X probe that will display 50 to 100 millivolts per division, just connect that 'scope across the dummy load and you can observe the carrier as an RF voltage. It is usually easier than setting up a separate receiver. You do not have to connect a microphone (better if you don't, there will be no mic pickup to confuse things), just plug in the paddles and close the dot side, that is the same as pressing PTT. Suggestions - use 40 meters, and adjust LSB first, then check USB and if necessary touch up the adjustment but go back and forth between sidebands until you have both about the same - there may have to be a small compromise between sidebands. 73, Don W3FPR Steve Watkins wrote: Thanks to Jerry, WA2DKG, I got past the Deaf K2 by plugging the speaker into the P5 on the RF board vs. the Control Board. I'm not sure how or where I missed that it should be plugged in there, but it works, so things weren't shorted after all on the KSB2 board. Now I'm at the Fine Carrier Balance Adjustment section (Page 19 in the KSB2 Manual), and am not sure how to hear the K2's transmitted signal on a external receiver. Since the K2 is connected to a dummy load, am I to run a short piece of wire from the external receiver and locate it near the dummy load to hear this? Thanks, Steve NE7RD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2
I just finished my KSB2 and was ready to get it checked out with the mike, but I accidently put the 16 pin header on the wrong side of the Control Board. I was able to get it out but not without ruining it. Other than being more convenient to change mikes, any real need for the header? Do any of you dispense with the header and just wire to the pcb pads? I'd rather not wait for a replacement. I can allways install it later if I need to make a change. Phil N3ZP ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 Bandwidth modification
Question for the K2 listserv. I have a K2 (s/n 377) and the KSB2 with the normal 2.1 KHz. bandwidth configuration. I get excellent audio reports but it is narrow. I'm thinking of purchasing another KSB2 board and want to make it either 2.4 or 2.6 KHz. For any who may have made the modification, do you think 2.4 would make much difference or should I just go for the 2.6 KHz. B/W,. and are there any considerations when opening it up that far? Your thoughts Thanks, Steve, AE2G ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KSB2 Bandwidth modification
Hi Steve, It is a worthwhile exrecise. You do not only get a wider band width but also less ripple within the pass band. There is an upgrade kit available from Elecraft and you have no need to change the entire KSB2 board. I would suggest 2.4Khz because this will give you good sound quality with reasonable selectivity. 2.6Khz is too wide for me. For most voice operation, 2.4khz is the norm. 73 Johnny Siu VR2XMC From: Barry, Stephen [EMAIL PROTECTED] To: elecraft@mailman.qth.net Subject: [Elecraft] KSB2 Bandwidth modification Date: Mon, 5 Mar 2007 13:32:23 -0500 Question for the K2 listserv. I have a K2 (s/n 377) and the KSB2 with the normal 2.1 KHz. bandwidth configuration. I get excellent audio reports but it is narrow. I'm thinking of purchasing another KSB2 board and want to make it either 2.4 or 2.6 KHz. For any who may have made the modification, do you think 2.4 would make much difference or should I just go for the 2.6 KHz. B/W,. and are there any considerations when opening it up that far? Your thoughts Thanks, Steve, AE2G _ Hotmail Extra Storage讓你獲得10MB 額外儲存空間，請即申請！ http://join.msn.com/?pgmarket=zh-hk ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 SSB Use Report
I wanted to report that the K2 (#5230) with KSB2 SSB board and Kenwood MC 43S mic was used for my first contact with a local ham. He has a K2 and was interested in hearing my radio because he has never heard a K2 voice transmission. Said I sounded fine and the mic and board were working well. 73, Dale, kc9cwb ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 - need to configure P1 before coarse carrier balance?
Hi, I'm currently checking/aligning my KSB2. The microphone is not purchased until now, but I still wanted to adjust KSB2 tonight as far as I could. Can I do a coarse carrier adjustment without configuring P1 first? (R1 has no effect on field strength, S-meter is zero) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 SSB Adapter problem
I have just put together the KSB2 SSB ADAPTER and I have problems. Referring to the manual on page 15 “Initial Test” the last paragraph “Verify that the K2 performs...” I do not get any sound in the loudspeaker, or the sound I get is very very muted. I can hear some very faint - both CW and SSB – signals but only when the volume is turned up to max. Else there is no problem doing the “BFO Test”, “Receive-Mode SSB Filter Test” and “BFO Setup for LSB/USB” I have checked the voltages as seen on page 23 in the manual and found the following anomalies in receive mode: U1-21... zero volt (should be 5.8) U2-5 6.0 volt (should be 0.6) U4-3 6.0 volt (should be 0.6) D10-D13 and D6-D9... no voltage in receive mode. So, what could be the matter? 73 de Håkan / SM6EQO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KSB2 SSB Adapter problem
Haken, At this point, do not be concerned about those voltages you found did not agree with the chart in the manual. The no voltages at the diodes is a cause for concern. The problem may be in where you measured for voltage or the settings you were using. We will get to that. Let's verify that the source for the diode switching voltages are correct: First thing, set the SSB FL1 filter to OP1 (using the K2 menu). Set the K2 to SSB mode and be certain FL1 is selected. Now measure the voltage at U1 pin 21 (should be about 6 volts), and measure the voltage at U1 pin 22 (should be near zero volts). Now, switch to CW mode (any of the CW filters is OK), and measure the voltage at U1 pin 21 (should now be near zero volts) and U1 pin 22 (should now be near 6 volts). You should also find about 6 volts at the cathode of D7 and D8 and at the cahode of D11 and D12. If you do not have these voltages present, check to be certain RFC1 and RFC2 are not shorting to the crystal cases (insert a sheet of paper between the choke and the crystal as an insulator). If all the checks above are correct, switch back to SSB mode, FL1 (OP1) filter and check for about 6 volts at the cathode of D6 and D9 and at the cathode of D10, D13 and D14. If you find all those voltages correct, the filters should switch between the CW filter and the SSB filter. Just as information if you are following the schematic - the RXC signal indicates that receive should be through the CW filter when this signal is active (about 6 volts), and RXS indicates that the receive path is through the SSB filter when this signal is active. Make the checks above, and if that did not lead you to fine the source of the problem, send us your report of your findings. 73, Don W3FPR -Original Message- I have just put together the KSB2 SSB ADAPTER and I have problems. Referring to the manual on page 15 “Initial Test” the last paragraph “Verify that the K2 performs...” I do not get any sound in the loudspeaker, or the sound I get is very very muted. I can hear some very faint - both CW and SSB – signals but only when the volume is turned up to max. Else there is no problem doing the “BFO Test”, “Receive-Mode SSB Filter Test” and “BFO Setup for LSB/USB” I have checked the voltages as seen on page 23 in the manual and found the following anomalies in receive mode: U1-21... zero volt (should be 5.8) U2-5 6.0 volt (should be 0.6) U4-3 6.0 volt (should be 0.6) D10-D13 and D6-D9... no voltage in receive mode. So, what could be the matter? 73 de Håkan / SM6EQO -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.28/605 - Release Date: 12/27/2006 12:21 PM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KSB2 SSB Adapter problem
Don, it was a short betwen either RFC1 or RFC2 and one of the crystal cases that caused the problem. Really embarassing because it was basically the first and only real problem I have come upon building my K2 #5810 and all the extras... :-) It's so easy to happen that I really think it should be pointed out in the manual. 73 de Haakan / SM6EQO -- Don Wilhelm skrev: Haken, At this point, do not be concerned about those voltages you found did not agree with the chart in the manual. The no voltages at the diodes is a cause for concern. The problem may be in where you measured for voltage or the settings you were using. We will get to that. Let's verify that the source for the diode switching voltages are correct: First thing, set the SSB FL1 filter to OP1 (using the K2 menu). Set the K2 to SSB mode and be certain FL1 is selected. Now measure the voltage at U1 pin 21 (should be about 6 volts), and measure the voltage at U1 pin 22 (should be near zero volts). Now, switch to CW mode (any of the CW filters is OK), and measure the voltage at U1 pin 21 (should now be near zero volts) and U1 pin 22 (should now be near 6 volts). You should also find about 6 volts at the cathode of D7 and D8 and at the cahode of D11 and D12. If you do not have these voltages present, check to be certain RFC1 and RFC2 are not shorting to the crystal cases (insert a sheet of paper between the choke and the crystal as an insulator). If all the checks above are correct, switch back to SSB mode, FL1 (OP1) filter and check for about 6 volts at the cathode of D6 and D9 and at the cathode of D10, D13 and D14. If you find all those voltages correct, the filters should switch between the CW filter and the SSB filter. Just as information if you are following the schematic - the RXC signal indicates that receive should be through the CW filter when this signal is active (about 6 volts), and RXS indicates that the receive path is through the SSB filter when this signal is active. Make the checks above, and if that did not lead you to fine the source of the problem, send us your report of your findings. 73, Don W3FPR -Original Message- I have just put together the KSB2 SSB ADAPTER and I have problems. Referring to the manual on page 15 “Initial Test” the last paragraph “Verify that the K2 performs...” I do not get any sound in the loudspeaker, or the sound I get is very very muted. I can hear some very faint - both CW and SSB – signals but only when the volume is turned up to max. Else there is no problem doing the “BFO Test”, “Receive-Mode SSB Filter Test” and “BFO Setup for LSB/USB” I have checked the voltages as seen on page 23 in the manual and found the following anomalies in receive mode: U1-21... zero volt (should be 5.8) U2-5 6.0 volt (should be 0.6) U4-3 6.0 volt (should be 0.6) D10-D13 and D6-D9... no voltage in receive mode. So, what could be the matter? 73 de Håkan / SM6EQO -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.28/605 - Release Date: 12/27/2006 12:21 PM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 board - should be renamed.
I started the KSB2 last night. Between interruptions, I got about 1/2 way through. I think the board should be renamed. Call it the 103 board. Man are there a bunch of blue 103 caps to install! With tonight's effort I just may have the rig ready for some SSB action this weekend. - Keith N1AS - ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 no audio output
Hi, My SSB module worked fine before. I add my kpa100 and every test went well. I test my kat100 and every test went well until I did the last test with the dummy load. Now my Mic is sending a tone. No more voice. But the power still there. Is any body had this probleme? Best regard and best 73's Sylvain Ve2SSL Sylvain St-Louis ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KSB2 no audio output
Are you still in SSB mode or perhaps did the MODE button get bumped to put you in CW mode?? Ron AC7AC -Original Message- Hi, My SSB module worked fine before. I add my kpa100 and every test went well. I test my kat100 and every test went well until I did the last test with the dummy load. Now my Mic is sending a tone. No more voice. But the power still there. Is any body had this probleme? Best regard and best 73's Sylvain Ve2SSL ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 ALC Mod
Some time ago I installed the PN amp mod to my KSB2 board to increase the 10 meter SSB output on my QRP K2. Later I added the KPA100. John (KI6WX) said the KSB2 amp mod was no longer needed since adequate output is obtained on 10 meters. I have since removed this PN amp mod. However, at the time I had the mod installed I had to do another mod suggested by Gary Surrency to keep the balanced modulator from overdriving the ALC when using PTT. This KSB2 mod replaces R9 with a 1.5K resistor and a 1K resistor is placed across a cut trace between Q1's base and pin 6 of P1 connector. I am wondering if I should undo this mod since I no longer have the PN amp mod. I am not aware of any adverse effect on my SSB signal. Roy Morris W4WFBNo virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.405 / Virus Database: 268.10.10/419 - Release Date: 8/15/2006 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE:[Elecraft]KSB2
Before you send it off. Check the diodes. I installed 1 backwards and got the same issues. I am referring to the switching diodes on both ends of the crystal filter. Richard Kent, WD8AJG ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2
Hi all, Although I operate almost no SSB, I built the KSB2 for my K2 (#4398) late last year so I could use the K2 for RTTY contests. It seems to do everything a well conditioned KSB2 should do except it exhibits about 30 dB loss through the on-board filter. Thus, the SSB output from the K2 is in the milliwatt range and the RX level drops very noticably with the OP1 filter selected. I haven't had the time to figure it all out, and it's a bit tough since my test equipment is limited to a DMM, old Tek scope, and a very old service monitor. Given the likely cost of commercial repair through Elecraft, I decided I'd just build another KSB2, and it came today. This will leave me with the slightly-under-the-weather unit for which I have no use. If someone would like to mess around with it, I'll send it to you. All I ask is a charitable donation. I'll suggest a favorite charity, but it and the amount would really be up to you. I'd be able to mail it as soon as I get the new one built and working (without it, my beloved K2 is dead, of course and I can't take that). I may have it built and done by the weekend. I'll pick the first email that arrives. 73, Fred K6DGW Auburn CA CM98lw ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KSB2
I think you should keep the KSB2 until the new one is finished also, BUT... The statement without it, my beloved K2 is dead is not true. Just stick a couple jumpers in the short jacks (1 to 3), and a [I Forgot] pF cap in the big one, between 5 and 7 if memory serves. Dan / WG4S / K2 #2 456 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KSB2
Fred, take care not to put too much solder on the pins of the crystals when you install them in your new KSB2. One of the most common reasons for low gain is a bit of solder that puddled around the pin under the crystal can where you can't see it and shorting the signal path to the can. Remember, those are plated through holes, so when solder melts and flows on the bottom side, it's melted and flowing on the top side under the crystal too! Ron AC7AC -Original Message- Fred, K6DGW wrote: Although I operate almost no SSB, I built the KSB2 for my K2 (#4398) late last year so I could use the K2 for RTTY contests. It seems to do everything a well conditioned KSB2 should do except it exhibits about 30 dB loss through the on-board filter. Thus, the SSB output from the K2 is in the milliwatt range and the RX level drops very noticably with the OP1 filter selected. I haven't had the time to figure it all out, and it's a bit tough since my test equipment is limited to a DMM, old Tek scope, and a very old service monitor. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 and microphone gain
I just completed a number of mods for the SSB module, described by KI6W
('Improving the Performance of the KSB2'), by DF7KHK (increase of audio
compression) and by DJ3FR (change R8 and R10 to 560 Ohm). After these
modification I played a bit with the radio. During a contest last
weekend I noticed that the SSB signal is fine. When listening to my own
microphone signal (SSBA set to BAL), I noticed that the audio level
varies by the band chosen (listening to the audio with a headphone). As
with the SSBA set to BAL the output of the KSB2 is directly fed into the
IF of the K2 receiver, I would expect a more constant level. My test
results (using the S-meter as an indication for the signal strength) below:
band signal strength
160m S9+40
40m S9
30m S9
20m S7
17m S8
15m S9
12m S9
10m S9
As you can see:
the signal is very strong when the K2 is set to 160 meters and
relatively weak at 20 meter. I am not (yet) complaining, just very
curious how this difference can be explained.
(When I have some time again I want to perform the same tests, but than
transmitting into a dummy oad and using an Icom 706 as a monitor receiver).
Piet, PA1PM
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[Elecraft] KSB2 R15
I am building the KSB2, and R15 (180 ohms) is missing. Can I substitute a 220 ohm resistor for this? It is the attten signal on the Mic AF. Mike AI4NS ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KSB2 in K2/100
I know this message is a bit old, but I've been too tied up with other projects to read the reflector mail for the last two months (fyi - the reflector generated over 2000 emails in the last 2 months). The increased gain mod I did for the KSB2 was originally designed to increase the transmit gain in SSB for a barefoot K2. The original K2 had difficulty reaching 10 watts of power output in SSB on 10 meters. When you drove the audio input harder to get to full power, the K2 would start to clip on the audio peaks. This does not create a wider bandwidth signal because the SSB modulator is followed by the SSB filter, but it does increase the audio distortion. I added the extra emitter follower stage to increase the overall IF gain in the SSB transmit signal path. This mod should not be necessary with the KPA100, since it can reach full power with only a few watts of drive. Some folks have reported that the emitter follower stage can cause power output instability when the KPA100 is installed. There is at least one fix around that reduces the gain of the emitter follower stage by increasing the emitter resistor value and apparently eliminates this instability. I would recommend that the emitter follower gain stage not be used in a K2/100 since it does appear to cause a stability problem, and there is no need for the extra gain on 10 meters. -John KI6WX - Original Message - From: Roy Morris [EMAIL PROTECTED] Sent: Saturday, June 03, 2006 9:41 AM I would like to hear from anyone who has K2/100s with both the unmodified KSB2 and the modified KSB2 with the KI6WX 2N amp mod (and 1.08 firmware). How does this mod affect mic gain and VOX operation? How does the absence of this mod affect mic gain and VOX operation? Does the mod help SSB modulation on 10 meters with the power level set at 5 watts? Do you find this mod helpful at 100 watts? Thanks for your input. Roy Morris W4WFB ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KSB2 in K2/100
John - KI6WX said: (fyi - the reflector generated over 2000 emails in the last 2 months). == No wonder I havn't got the house painted! Rick Dettinger K7MW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 in K2/100
I would like to hear from anyone who has K2/100s with both the unmodified KSB2 and the modified KSB2 with the KI6WX 2N amp mod (and 1.08 firmware). How does this mod affect mic gain and VOX operation? How does the absence of this mod affect mic gain and VOX operation? Does the mod help SSB modulation on 10 meters with the power level set at 5 watts? Do you find this mod helpful at 100 watts? Thanks for your input. Roy Morris W4WFB No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.8.1/355 - Release Date: 6/2/2006 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KSB2 in K2/100
It's very unlikely you'd find any benefit from using this mod running 5 watts PEP on any band. That mod was specifically to provide full K2 output for those units who, because of the combination of the particular K2 and mic used, don't make a full 10 watts PEP output on all bands. The mod would help at 100 watts in the same sense that it helps at 10 watts: it provides the overall gain to make sure one can get a full 100 watts PEP on all bands. In SSB mode, the power output from the K2 is a function of the overall gain of the transmitter RF system and, within limits, the amount of audio supplied to the balanced modulator. The overall gain of the transmitter RF system falls off at the higher frequencies and is usually the least on 10 meters. So most operators who notice low output notice it on 10 meters. Of course, there's a limit to amount of audio the balanced modulator can handle, so simply adding audio gain isn't always the best choice. Indeed, excess audio gain can backfire with distortion, although the speech amplifier I.C. used in the K2 has an internal automatic gain control that should limit the distortion in most situations. John took a different approach with his 2N mod. He increased the transmit RF path gain mostly by providing a better impedance match at the output of the balanced modulator. His notes say that it provides about 10 dB of gain. I'm using an electret mic that, with my particular K2, provides full SSB output from 160 through 10 meters, although there is very little headroom at 10 meters. I get just 10 watts output in SSB mode on 10 meters without the KPA100 switched in and 100 watts PEP with the KPA100. Although I've not added John's mod, it has been on my to do list in case I'd like to play with a microphone with less output. I can say from first-hand experience helping John test some of his mods and through incorporating them on my K2 that John's mods are well thought out, well engineered and have always worked very well. Several of his mods have become in integral part of the K2 as currently shipped. Ron AC7AC -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Roy Morris Sent: Saturday, June 03, 2006 9:42 AM To: elecraft@mailman.qth.net Subject: [Elecraft] KSB2 in K2/100 I would like to hear from anyone who has K2/100s with both the unmodified KSB2 and the modified KSB2 with the KI6WX 2N amp mod (and 1.08 firmware). How does this mod affect mic gain and VOX operation? How does the absence of this mod affect mic gain and VOX operation? Does the mod help SSB modulation on 10 meters with the power level set at 5 watts? Do you find this mod helpful at 100 watts? Thanks for your input. Roy Morris W4WFB ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KSB2 in K2/100
Roy; I'm confused. Previous posts indicate you have already made this mod (and the secondary ALC mod) to your KSB2. If so, what have you found? I am contemplating the mod (and possibly the secondary ALC mod) for my K2/100. Thus I am very interested in comments on both mods... On Jun 3, 2006, at 9:41 AM, Roy Morris wrote: I would like to hear from anyone who has K2/100s with both the unmodified KSB2 and the modified KSB2 with the KI6WX 2N amp mod (and 1.08 firmware). How does this mod affect mic gain and VOX operation? How does the absence of this mod affect mic gain and VOX operation? Does the mod help SSB modulation on 10 meters with the power level set at 5 watts? Do you find this mod helpful at 100 watts? Thanks for your input. Roy Morris W4WFB No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.8.1/355 - Release Date: 6/2/2006 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com - Jack Brindle, W6FB - ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KSB2 in K2/100
Roy, As this mod is after the balanced modulator it does nothing to affect the mic gain or improve the VOX operation. 73 Stewart G3RXQ On Sat, 3 Jun 2006 12:41:42 -0400, Roy Morris wrote: I would like to hear from anyone who has K2/100s with both the unmodified KSB2 and the modified KSB2 with the KI6WX 2N amp mod (and 1.08 firmware). How does this mod affect mic gain and VOX operation? How does the absence of this mod affect mic gain and VOX operation? Does the mod help SSB modulation on 10 meters with the power level set at 5 watts? Do you find this mod helpful at 100 watts? Thanks for your input. Roy Morris W4WFB ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KSB2 P1 Wiring Questions
I just wonder why would a K2 owner want to spend good money for one of those solely to jumper the mic lines. There is a header to do the same thing on the rear of the front panel. Elecraft designed it so you can interface any mic to the K2, but I still believe it is easier to re-wire the mic plug as required. 73, Don W3FPR -Original Message- There is a new item from MFJ that people may find helpful when interfacing a mic to the K2. Its an MFJ-655 mic equalizer/conditioner/preamp that is supposed to interface any mic to just about any rig. It takes two types of mic connectors and the jumpering is done in the MFJ-655. You can use the standard setup with 2 pin jumper blocks in the K2 and not have to make any changes there. I don't have one but I think I will buy it soon. Read about it on the MFJ website. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KSB2 P1 Wiring Questions
On Wed, 5 Apr 2006 08:22:01 -0400, Don Wilhelm wrote: There is a new item from MFJ that people may find helpful when interfacing a mic to the K2. Its an MFJ-655 mic equalizer/conditioner/ preamp that is supposed to interface any mic to just about any rig. I just wonder why would a K2 owner want to spend good money for one of those solely to jumper the mic lines. But but but the MFJ gadget costs in the $150 range. Got to keep the economy of Mississippi going after the hurricanes!! -- 73 de K2ASP - Phil Kane ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 P1 Wiring Questions
Fellow Elecrafters-- I've successfully completed the KSB2 module for my K2/100 through p. 16 in the manual, front panel PCB component installation. Now it's time for mic configuration, p. 17. Winding toroids, soldering multi-pin connectors and IC's, stuffing capacitors, etc.--those I don't mind. However, when it comes to mic configuration and the possibility of fouling up my K2 via an incorrectly-wired 5V line--that's when I get jittery. Here are the details: 1) Initial mic to be used: Kenwood MC-60 2) Eventual mic to be used: Radio Shack RS 33-1187 headset 3) P1 wiring method: N0SS's computer plug (thanks for the info on your website, Tom) or two-pin jumpers--both are at hand. After studying the KSB2 manual and reading postings in the Elecraft reflector archives, here are some questions: 1) Several reflector postings mention that for Kenwood settings, just use jumpers straight across for all the Signal and Mic pin connections. However, on p. 18 under Kenwood mics, there's a note: Do not connect pin 5 unless mic has internal preamp, and another, Leave pin 6 of the mic unconnected. I plead ignorance--does the MC-60 have an internal preamp? If it does, according to the manual I should connect signal pin 6 to mic pin 5. 2) I've read a posting that mentions leaving the bottom slide switch on the MC-60 off. Done. Wonder if this negates the warning listed above and I should just leave signal pin 6 (5V) unconnected? 3) The MC-60 has two impedance settings, 50K and 500--is there a preferred setting with the K2? 4) Any suggestions for wiring an 8-pin female mic plug from the RS 33-1187 that'll be compatible with Kenwood P1 settings? Finally, it's been mentioned before but for those who need it here's the Radio Shack part number for a package of ten two-pin jumpers: 276-1512. 73, John, N7ON K2/100 S/N 5023 P.S. Many thanks to Elecraft's Gary and Richard as well as to N6WG and WB6TQG for their continued assistance with the KSB2, microphones, and RTTY. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KSB2 P1 Wiring Questions
Folks, My advice on mic wiring - unless you must use the mics with multiple rigs, wire the mic configuration header for the Elecraft mics, and then change the wiring at the mic plug to match the Elecraft configuration. By doing that, it certainly simplifies things a whole lot. I see no sense in wiring your Elecraft rig to work with a Yaesu mic (for instance) since that slaves you forevermore to using the Yaesu mic wiring configuaration. IMHO, if you have only an Elecraft station, the mic plugs should be wired for the Elecraft configuration. -- If you must use the mics on multiple rigs, then yes, I can understand that you might want to use that manufacturers mic wiring on your K2 so you can connect any mic wired for that rig, but lacking that, I say, change the mic wiring to the Elecraft mic wiring and you cannot go wrong. 73, Don W3FPR -Original Message- I've successfully completed the KSB2 module for my K2/100 through p. 16 in the manual, front panel PCB component installation. Now it's time for mic configuration, p. 17. Winding toroids, soldering multi-pin connectors and IC's, stuffing capacitors, etc.--those I don't mind. However, when it comes to mic configuration and the possibility of fouling up my K2 via an incorrectly-wired 5V line--that's when I get jittery. Here are the details: 1) Initial mic to be used: Kenwood MC-60 2) Eventual mic to be used: Radio Shack RS 33-1187 headset 3) P1 wiring method: N0SS's computer plug (thanks for the info on your website, Tom) or two-pin jumpers--both are at hand. After studying the KSB2 manual and reading postings in the Elecraft reflector archives, here are some questions: 1) Several reflector postings mention that for Kenwood settings, just use jumpers straight across for all the Signal and Mic pin connections. However, on p. 18 under Kenwood mics, there's a note: Do not connect pin 5 unless mic has internal preamp, and another, Leave pin 6 of the mic unconnected. I plead ignorance--does the MC-60 have an internal preamp? If it does, according to the manual I should connect signal pin 6 to mic pin 5. 2) I've read a posting that mentions leaving the bottom slide switch on the MC-60 off. Done. Wonder if this negates the warning listed above and I should just leave signal pin 6 (5V) unconnected? 3) The MC-60 has two impedance settings, 50K and 500--is there a preferred setting with the K2? 4) Any suggestions for wiring an 8-pin female mic plug from the RS 33-1187 that'll be compatible with Kenwood P1 settings? Finally, it's been mentioned before but for those who need it here's the Radio Shack part number for a package of ten two-pin jumpers: 276-1512. 73, John, N7ON K2/100 S/N 5023 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 Missing parts
Hi, I have just checked my inventory for the KSB2 and seem to be short of all of the components for mounting on the front panel board, i.e. : - P1, c4-c8,q3,rp3,rbias and R13, It seems to me that the parts must all have been in 1 envelope and this was omitted from my kit. Before I contact Elecraft for replacements I wonder if someone could confirm this so I can check the shack to see if the envelope has been stolen by the underpants gnomes. Thanks, Steve G0XAR ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KSB2 Missing parts
Steve, Unless something has changed at Elecraft packaging recently, those parts are mixed in with all the rest (not packaged in a separate envelope). So if you have sorted all the parts and they are still not present, a note to mailto:[EMAIL PROTECTED] would seem to be in order. Unless of course, you had extracted them earlier and already installed them on the front panel board - check for the mic header on the back of the Front Panel board. 73, Don W3FPR -Original Message- Hi, I have just checked my inventory for the KSB2 and seem to be short of all of the components for mounting on the front panel board, i.e. : - P1, c4-c8,q3,rp3,rbias and R13, It seems to me that the parts must all have been in 1 envelope and this was omitted from my kit. Before I contact Elecraft for replacements I wonder if someone could confirm this so I can check the shack to see if the envelope has been stolen by the underpants gnomes. Thanks, Steve G0XAR ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.3.1/292 - Release Date: 3/24/2006 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 problem
I recently bought a KSB2 that was advertised here. It's an early release, rev B board, so I picked up a number of update kits and started assembly, slowly and carefully, as Gary advises. I got through it in a couple of evenings. Last night, I installed it in my K2 and got INFO 080. Drat! I was so slow and careful! I checked voltages on the MCU, they were fine, so I got the silly scope out to see if there was AUXBUS traffic on pin 28 where there should be. Yes, there was. And ... also on pin 27! That can't be good. I inspected carefully for solder bridges, found none. I contemplated diking out part of the socket to ease removal. Gary suggested heating the pins and wiggling. Ultimately, I clamped the thing in the vise, put on my finest soldering tip, and sucked up the solder, pin by pin. After about three passes, I was able to remove the socket, intact, and no damage was done to the board. I inspect the socket, no joy. I inspect the top of the board ... no joy! Pins 27 and 28 are 0.1 ohms. Drat. I lift R12 to isolate that part of the board ... still beeping. Bright light, magnifier, ask my XYL to look, too. Nothing. Finally decide to put it away for the night. Then I go give it one more. I thought that perhaps the trace that comes off pin 27 had grown too much and was touching the pad for 28, so I scraped away the solder mask. No joy. I started contemplating where I could cut a trace to divide the problem and still make a reasonable, perhaps invisible repair. As I did, I noticed a slightly darker spot around pin 1, between the traces from 27 and 28. Sure enough, there must have been just a stray bit of resist laid down there, about half a hair's width, because there was copper under the mask connecting the traces. Free! Free! Pins 27 and 28 are free again! It's tempting, but I'm not going to rush soldering the socket back in and then rush a test. I'll do it tomorrow when I can go through the whole procedure and update the front panel, too. One for the archives... 73 de chris K6DBG ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
