Re: [Elecraft] Power pole for K3?
David Cutter wrote: Yes, the power cord parts are included with the K3 kit. This is one item that will require your soldering iron unless you have a good (ratcheting type) crimper for the Anderson PowerPole connectors and know how to properly crimp the connectors. 73, Don W3FPR Lisa tells me that if you ask, you can actually buy the ready-made cable from Elecraft at $10. In my honest opinion you are well advised to order this with your kit. If you order the ready-built K3, this is what you get. It needs more than just a ratchet crimper - it has to be a hexagon crimper of exactly the right size. Otherwise it's out with the soldering iron, or pony up your $10. -- 73 from Ian GM3SEK http://www.ifwtech.co.uk/g3sek ___ 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] Buddipoles and KX1
David Woolley wrote: Craig D. Smith wrote: Most everyone I know (including me) who uses the BuddiPole as a vertical uses a single quarter wave elevated radial or counterpoise wire. This costs That could equally be viewed as being a quarter wave, horizontal antenna with a vertical counterpoise. In free space, the longer of the two would dominate. Over a good ground, things get more complicated, and I'm not sure I can give a good intuitive analysis Seemingly a quarter wave vertical with a quarter wave elevated horizontal radial was a popular antenna amongst hams in the 1930s, and continued to appear in the ARRL Antenna Handbook during the 1940s as the Up and Out antenna. In those days the antenna was viewed as a halfwave centre fed dipole with a 90 degree bend at the centre, although it was also used as a multiband antenna I believe. But as you point out things are a bit more complicated when the antenna is over ground. Without running a model, which might not give accurate results, my instinct suggests that both the length and angle of the 'horizontal radial' of a real single band antenna over ground might have to be adjusted to obtain a non-reactive feedpoint impedance for coax feeder - assuming that the vertical part is an electrical quarter wave. During the 1930s and 1940s open wire feeders and antenna matching units were of course the norm, which would probably make these adjustments to the 'radial' unnecessary. 73, Geoff GM4ESD ___ 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] [K3] PSK etc via external unit and KB
Having just read the Waters Stanton add in this months RadCom, I see on pg 2 an add for the Icom IC-7700 and its content : Another first: built-in PSK31 and RTTY. Just add a USB keyboard Apart from taking exception - it's not a first, the K3 was I believe (but no point complaining - K3 doesn't have a KB yet), this got me to thinking... Would some bright spark like to produce a very small USB keyboard to paddle converter kit? I would guess a PIC that would produce the appropriate contact closures? This is far beyond me in design, but while we wait for Elecraft to possibly add some form of keyboard interface, this would allow us to drive the built in PSK and RTTY in the K3 via the paddle input. I know there is the NUE-PSK unit, but since most of the requirement is in the K3, I thought a small unit to convert key press to contact closure might be possible? 73 de M0XDF, K3 #174 -- God gives every bird his worm, but he does not throw it into the nest. -Swedish proverb ___ 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] Power pole for K3?
On Sat, 19 Apr 2008 07:06:27 +0100, you wrote: [snip] It needs more than just a ratchet crimper - it has to be a hexagon crimper of exactly the right size. Otherwise it's out with the soldering iron, or pony up your $10. I'm not sure what you mean by hexagon. The crimping dies I have (purchased from West Mountain) are not hexagon shaped at all. They are round with a raised section that pushes the connector into the wire by making a dimple in the connector sleeve. Tom, N5GE - SWOT 3537 - Grid EM12jq They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety. --Benjamin Franklin 1775 Support the entire Constitution, not just the parts you like. http://www.n5ge.com http://www.eQSL.cc/Member.cfm?N5GE ___ 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] re-two transceivers an one antenna
I have used such a set up for many years - actually since I have been using the K2-10 watts, along with an IC 751. But I switch off the rig not in use, otherwise...! The switch is a faithful old Heathkit antenna switch. I can even use a Heathkit SB-220 with the Icom, provided the K2 is turned off. 73 Jacques ___ 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] Spectrogram v16 - FREEWARE
G'morning, all: For those interested, Spectrogram is again available as Freeware. Richard's website, http://www.visualizationsoftware.com/gram/gramdl.html says: Version 16 is being made available as freeware to replace the older freeware versions of the software relied upon by the majority of Spectrogram users. The download at left is a self-extracting setup program that will install Spectrogram on a single computer. 73, Ken K3IU ___ 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] Power pole for K3?
Just solder them. Crimping is a bad idea unless you have EXACTLY the right tool. Mike GM3SEK wrote: David Cutter wrote: Yes, the power cord parts are included with the K3 kit. This is one item that will require your soldering iron unless you have a good (ratcheting type) crimper for the Anderson PowerPole connectors and know how to properly crimp the connectors. 73, Don W3FPR Lisa tells me that if you ask, you can actually buy the ready-made cable from Elecraft at $10. In my honest opinion you are well advised to order this with your kit. If you order the ready-built K3, this is what you get. It needs more than just a ratchet crimper - it has to be a hexagon crimper of exactly the right size. Otherwise it's out with the soldering iron, or pony up your $10. -- 73 from Ian GM3SEK http://www.ifwtech.co.uk/g3sek ___ 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 -- View this message in context: http://www.nabble.com/Power-pole-for-K3--tp16779200p16782269.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] Power pole for K3?
Tom Childers, N5GE wrote: On Sat, 19 Apr 2008 07:06:27 +0100, you wrote: [snip] It needs more than just a ratchet crimper - it has to be a hexagon crimper of exactly the right size. Otherwise it's out with the soldering iron, or pony up your $10. I'm not sure what you mean by hexagon. Like the West Mountain 04 and 05 accessory dies - a hex crimp squeezes the terminal inward onto the cable from six sides. The crimping dies I have (purchased from West Mountain) are not hexagon shaped at all. They are round with a raised section that pushes the connector into the wire by making a dimple in the connector sleeve. The photo on the West Mountain website doesn't show this clearly, but the sketches on the Anderson website suggest four inward dimples - is that right? Sorry I was being too restrictive about the types of crimps that will work with APPs. The point I was trying to make was that many of the most common kinds of crimpers will not work, because they squeeze the terminal out sideways, and then it won't fit into the housing. -- 73 from Ian GM3SEK http://www.ifwtech.co.uk/g3sek ___ 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] Power pole for K3?
Tom, You are correct - a hexagon shaped crimper die will not adequately crimp the APP barrel unless the wire size is large enough to fit *very* tightly into the barrel, and that is definitely not the normal situation (yes, I have tried it, with dismal failure). The crimping die must both hold the barrel in the proper round shape and depress a dimple into the barrel. BTW, the dimple side must be opposite the surface where the barrel is split to keep from deforming the barrel. The proper tool used improperly will produce poor results - if in doubt, solder the connectors. 73, Don W3FPR Tom Childers, N5GE wrote: On Sat, 19 Apr 2008 07:06:27 +0100, you wrote: [snip] It needs more than just a ratchet crimper - it has to be a hexagon crimper of exactly the right size. Otherwise it's out with the soldering iron, or pony up your $10. I'm not sure what you mean by hexagon. The crimping dies I have (purchased from West Mountain) are not hexagon shaped at all. They are round with a raised section that pushes the connector into the wire by making a dimple in the connector sleeve. Tom, N5GE - SWOT 3537 - Grid EM12jq ___ 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] Power pole for K3?
Yep, I confirm that. And we seem to be opening up an old thread again, all this has been cover at least twice before and it available in the archives. -- If you must play, decide on three things at the start: the rules of the game, the stakes, and the quitting time. -Chinese Proverb On 19 Apr 2008, at 12:06, Tom Childers, N5GE wrote: I'm not sure what you mean by hexagon. The crimping dies I have (purchased from West Mountain) are not hexagon shaped at all. They are round with a raised section that pushes the connector into the wire by making a dimple in the connector sleeve. ___ 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] K3 2 meter transverter
Werner, snip Hi Guys Just was curious after reading about the 6 meter opening posts and how much fun it can be and was wondering about 2 meters. Is there enough activity and how wide use does it receive? snip I recently put the XV144 on the air using my K2 as the IF and an 11 element beam at 50 feet to get started in weak signal VHF and have found a good bit of activity in my area in a 150 mile radius. I have heard stations in Mississippi and South Carolina but wasn't able to raise them with the 20W out of the XV144. I think the excitement is in the hunt and am looking forward to spending more time tuned to 2 meters - I am currently building another K2 so I can keep this one monitoring 2M (and other bands in the future) and use the new on HF. YMMV 73 Larry Ingram AG4NN ___ 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] Low power out on 6 meters
After doing the full calibration multiple times (Synthesizer/Wattmeter/TX Gain/ and TCXO) I find that I have lower than expected power output on 6m. Firmware is 1.78 and I have the rig set to transmit through the 2.8 KHz filter. With the K3's power set to 100 watts I'm seeing 66.3 watts output to a dummy load on my LP-100A wattmeter. Set to 120 watts I see a maximum of 76 watts. Is this normal behavior? Thanks. ___ 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] K3: Rob Sherwood's full text reply
Okay...I sent out about a dozen private forwards around 0800z. Just got back on line, and my in box double that again. So shown below is a cut/paste of the full text NCØB reply. Nothing earth-shattering. I also received (from a separate source) a note indicating that the 250hz filter (which, as mentioned below, is more like 375hz) came in at 98, which seems to fit with what Rob is saying (but Rob never told me 98). ENJOY! de Doug KR2Q fromRob Terri Sherwood [EMAIL PROTECTED] to DOUGLAS ZWIEBEL [EMAIL PROTECTED], dateFri, Apr 18, 2008 at 10:27 PM subject Re: K3 various roofing filters Hi, The results are on my web site now. http://www.sherweng.com/table.html While I did not include the 250 Hz filter (which is more like 375 Hz), it fits between the 200 and 400 in dynamic range (DR3). They all work. I doubt anyone could tell the difference on the air from a DR3 standpoint. One can certainly tell the difference from a bandwidth standpoint. Personally I would use the 500 and 200. One could also choose the 400 and the 200. On SSB I think I would add the 2.1. One can always set the DSP to 1.8 when needed. If a contester only, maybe the 1.8 instead of the 2.1, but I would have to evaluate that over time, and I did not have the 2.1, and I did not listen to the K3 in an SSB contest. The 2.7 in my borrowed K3 had some passband tilt or ripple, and I could never get LSB and USB to sound the same on noise. Feel free to post any of this on the reflector. 73, Rob Sherwood, NC0B ___ 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] Low power out on 6 meters
I'm getting 100 watts out with 100 watts requested, 120 watts out with 120 watts requested. 73, Ken K3IU K0EKL wrote: After doing the full calibration multiple times (Synthesizer/Wattmeter/TX Gain/ and TCXO) I find that I have lower than expected power output on 6m. Firmware is 1.78 and I have the rig set to transmit through the 2.8 KHz filter. With the K3's power set to 100 watts I'm seeing 66.3 watts output to a dummy load on my LP-100A wattmeter. Set to 120 watts I see a maximum of 76 watts. Is this normal behavior? Thanks. ___ 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] Power pole for K3?
On Sat, 19 Apr 2008 13:50:32 +0100, you wrote: Yep, I confirm that. And we seem to be opening up an old thread again, all this has been cover at least twice before and it available in the archives. I agree. Let's not start that all over again... Tom, N5GE - SWOT 3537 - Grid EM12jq They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety. --Benjamin Franklin 1775 Support the entire Constitution, not just the parts you like. http://www.n5ge.com http://www.eQSL.cc/Member.cfm?N5GE ___ 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] [K3] PSK etc via external unit and KB
I think K1EL has something similar to this called a K40? It even has the correct K designation. :) But...its output is setup only for the straight key input and not paddle input. So some mods would be required. One of the items on the list is to accept input from the KEY jack as well as the paddles. When done, no mods to the above item would be necessary. 73 Greg AB7R Snowed in in APRIL!!! -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of David Ferrington, M0XDF Sent: Saturday, April 19, 2008 3:39 AM To: Crafters Subject: [Elecraft] [K3] PSK etc via external unit and KB Having just read the Waters Stanton add in this months RadCom, I see on pg 2 an add for the Icom IC-7700 and its content : Another first: built-in PSK31 and RTTY. Just add a USB keyboard Apart from taking exception - it's not a first, the K3 was I believe (but no point complaining - K3 doesn't have a KB yet), this got me to thinking... Would some bright spark like to produce a very small USB keyboard to paddle converter kit? I would guess a PIC that would produce the appropriate contact closures? This is far beyond me in design, but while we wait for Elecraft to possibly add some form of keyboard interface, this would allow us to drive the built in PSK and RTTY in the K3 via the paddle input. I know there is the NUE-PSK unit, but since most of the requirement is in the K3, I thought a small unit to convert key press to contact closure might be possible? 73 de M0XDF, K3 #174 -- God gives every bird his worm, but he does not throw it into the nest. -Swedish proverb ___ 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] Power pole for K3?
The only thing not in the archive is that you can buy the ready-made cable from Elecraft for $10. K3$2-3000 Cable$10 Ship, tar, ha'porth. David G3UNA On Sat, 19 Apr 2008 13:50:32 +0100, you wrote: Yep, I confirm that. And we seem to be opening up an old thread again, all this has been cover at least twice before and it available in the archives. I agree. Let's not start that all over again... Tom, N5GE - SWOT 3537 - Grid EM12jq ___ 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] SPE Expert 1K-FA Amplifer and K2 and K3
Is anybody using the SPE Expert 1K-FA amplifer with the K2 or K3, please? I was wondering which CAT option the amplifier needs to be selected to enable it to receive band information from the K2 and K3? Also, I would appreciate any advice on using the amplifier with the K2 and K3 in the light of other's experience. Thanks and 73 de Chris, N4CJ (G4BUE) ___ 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] Low power out on 6 meters
Dave Mine gives very close to the expected power on 6m: 5W set, output 4.7W 50W set, output 52W 100W set, output 99W 120W set, output 119W Measured on an LP100... 73 Dave, G4AON K3/100 #80 -- After doing the full calibration multiple times (Synthesizer/Wattmeter/TX Gain/ and TCXO) I find that I have lower than expected power output on 6m. Firmware is 1.78 and I have the rig set to transmit through the 2.8 KHz filter. With the K3's power set to 100 watts I'm seeing 66.3 watts output to a dummy load on my LP-100A wattmeter. Set to 120 watts I see a maximum of 76 watts. Is this normal behavior? ___ 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] K3 FS on QTH.COM
If anyone is interested... K3/100 FS on qth.com Listing #660545 Usual disclaimer No Financial interest... -- Dave G. KK7SS '65 MK III Sprite in Richland, WA Two things are infinite, the universe and human stupidity. But I'm not so sure about the universe. ... Albert Einstein. ___ 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] RS-232 Question
Hello, I have hooked up an old computer out in my shop. I made some cables and I'm in the process of trying to talk to my K2 via the computer. I have a KPA100 in the K2. The software I'm using is the K2 remote from the Elecraft web page. I have set it for comm port1 (the only port available on the computer) and get a message that no K2 can be found. I have ohmed the cables and think they are good. They also have connectors for a KAT100 (which is backordered) and a XV50 (which I'm having other problems). So the only thing connected is the K2 and the computer. Is there an easy way to determine if the problem is in the KPA100, the cables or the computer? Thank you in advance for any help. Best, DW Holtman WB7SSN ___ 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] Dangerous Low Volage (WAS: Power pole for K3?)
I see you got plenty of answers about the APPs, Bill. You will need to provide your own suitable connectors for the power supply end of the cable. You mention having high-capacity batteries and a 70-amp Astron supply. It sounds like you have experience with high-current supplies and understand how dangerous they can be, but there are a lot of readers here who may not have that background. I mention it because many Hams think 13.8 VDC is safe to handle. It's *NOT*. It's not the voltage, of course, but the current. A short often produces a flash of molten metal that may continue for a while if the resistance is enough to avoid tripping a breaker or crowbar circuit. It can take off a finger or a hand, or very severely injure a person in an instant should a ring or watch band get across the supply line, immediately transformed by the current into red-hot metal burning its way through flesh. In my days working in the field as an aircraft radio/radar tech I knew some who were missing fingers because they neglected to take off a wedding band when working. It's not a nice way to lose a hand or finger. It's not always quick. It can take a while, with the ring or watch band welded solidly to the terminals by the current as the hot metal eats its way through a finger or wrist. I've seen tempered steel screwdrivers literally explode into a spray of molten metal blobs when dropped across a high-current, low-voltage supply - blobs of molten steel that splatter the face and eyes of the unwary worker not wearing protective gear. Less severe shorts can set wiring, and the shack, on fire in short order, all without opening a breaker or tripping the crowbar protective circuit in the power supply. Even a more moderate 35 Amp supply can start a fire or cause a severe burn under the right conditions. Working on shipboard and aircraft systems using 12 to 28 VDC at high currents, I've learned to treat such supplies with the same respect I do a 3KV high-voltage supply. The concerns and procedures needed to be safe are different, but either a high voltage or a low-voltage, high-current supply is dangerous in its own way. I use soldered-on ring terminals on my Astron supplies that provide large, low-resistance contact areas with the lugs and which cannot be pulled loose without physically breaking the wire, and I make very sure there are no metallic objects (cabinets, connectors, other equipment, etc.) located where they might be accidentally moved and make contact with exposed supply terminals anywhere. And then I make sure the terminals on my power supply (and anywhere else) are carefully covered and insulated from accidental contact, just in case. Ron AC7AC ___ 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] [K3] PSK etc via external unit and KB
yes of course, what i basically need is a keyer - i hadn't thought that through. I'll probably avoid that since it will just tempt me to us it instead of working on my morse. -- The rung of a ladder was never meant to rest upon, but only to hold a man's foot long enough to enable him to put the other somewhat higher. -Thomas Henry Huxley, biologist and writer (1825-1995) On 19 Apr 2008, at 15:17, Greg wrote: I think K1EL has something similar to this called a K40? It even has the correct K designation. :) But...its output is setup only for the straight key input and not paddle input. So some mods would be required. One of the items on the list is to accept input from the KEY jack as well as the paddles. When done, no mods to the above item would be necessary. 73 Greg AB7R Snowed in in APRIL!!! -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of David Ferrington, M0XDF Sent: Saturday, April 19, 2008 3:39 AM To: Crafters Subject: [Elecraft] [K3] PSK etc via external unit and KB Having just read the Waters Stanton add in this months RadCom, I see on pg 2 an add for the Icom IC-7700 and its content : Another first: built-in PSK31 and RTTY. Just add a USB keyboard Apart from taking exception - it's not a first, the K3 was I believe (but no point complaining - K3 doesn't have a KB yet), this got me to thinking... Would some bright spark like to produce a very small USB keyboard to paddle converter kit? I would guess a PIC that would produce the appropriate contact closures? This is far beyond me in design, but while we wait for Elecraft to possibly add some form of keyboard interface, this would allow us to drive the built in PSK and RTTY in the K3 via the paddle input. I know there is the NUE-PSK unit, but since most of the requirement is in the K3, I thought a small unit to convert key press to contact closure might be possible? 73 de M0XDF, K3 #174 -- God gives every bird his worm, but he does not throw it into the nest. -Swedish proverb ___ 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] K3 power supply.
And I have been using mine for well over three, first with my IC-718 and now with my K3. No evidence of RF noise or hash whatsoever. In a QST comparative test several years ago, the MFJ-4125 was found found to be one of the quietest of all, regardless of price. The fan could be quieter but it's not obnoxious. Knut - AB2TC zl4vv wrote: I have been using the MFJ 4125 for about two years, with my K2 and now the K3. I have found no evidence of noise at all. 73 Max/ZL4VV -- View this message in context: http://www.nabble.com/K3-power-supply.-tp16778829p16784311.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] Power pole for K3?
The only thing not in the archive is that you can buy the ready-made cable from Elecraft for $10. To make matters easy ... it looks like one could order part number KPCA-F (part number from the cable from the factory assembled K3). 73, ... Joe, W4TV -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of David Cutter Sent: Saturday, April 19, 2008 10:24 AM To: [EMAIL PROTECTED]; Elecraft Reflector Subject: Re: [Elecraft] Power pole for K3? The only thing not in the archive is that you can buy the ready-made cable from Elecraft for $10. K3$2-3000 Cable$10 Ship, tar, ha'porth. David G3UNA On Sat, 19 Apr 2008 13:50:32 +0100, you wrote: Yep, I confirm that. And we seem to be opening up an old thread again, all this has been cover at least twice before and it available in the archives. I agree. Let's not start that all over again... Tom, N5GE - SWOT 3537 - Grid EM12jq ___ 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] K3 power supply.
MFJ now have a version of the 4125 with Anderson PowerPole connector on the front panel. I believe it's the MFJ-4125P 73, ... Joe, W4TV -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of ab2tc Sent: Saturday, April 19, 2008 11:25 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 power supply. And I have been using mine for well over three, first with my IC-718 and now with my K3. No evidence of RF noise or hash whatsoever. In a QST comparative test several years ago, the MFJ-4125 was found found to be one of the quietest of all, regardless of price. The fan could be quieter but it's not obnoxious. Knut - AB2TC zl4vv wrote: I have been using the MFJ 4125 for about two years, with my K2 and now the K3. I have found no evidence of noise at all. 73 Max/ZL4VV -- View this message in context: http://www.nabble.com/K3-power-supply.-tp16778829p16784311.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] [K3] PSK etc via external unit and KB
Greg, I think K1EL has something similar to this called a K40? It even has the correct K designation. :) But...its output is setup only for the straight key input and not paddle input. So some mods would be required. K1EL's Keyboard to serial IC http://k1el.tripod.com/ATKBD.html comes close but the output is ASCII data at 1200 or 9600 bps and not paddle closures. It would take a second PIC to convert the ASCII to paddle closures at a fixed WPM rate appropriate for data modes. It would sure be nice if the factory programming port - which, with its PCD (data), PGC (clock) and +5V signals looks suspiciously like a nonstandard i2C (PS/2) port - could be repurposed as a keyboard input for at least RTTY/PSK31 and maybe control of the keyer memories. 73, ... Joe, W4TV -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Greg Sent: Saturday, April 19, 2008 10:18 AM To: David Ferrington, M0XDF; Crafters Subject: RE: [Elecraft] [K3] PSK etc via external unit and KB I think K1EL has something similar to this called a K40? It even has the correct K designation. :) But...its output is setup only for the straight key input and not paddle input. So some mods would be required. One of the items on the list is to accept input from the KEY jack as well as the paddles. When done, no mods to the above item would be necessary. 73 Greg AB7R Snowed in in APRIL!!! -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of David Ferrington, M0XDF Sent: Saturday, April 19, 2008 3:39 AM To: Crafters Subject: [Elecraft] [K3] PSK etc via external unit and KB Having just read the Waters Stanton add in this months RadCom, I see on pg 2 an add for the Icom IC-7700 and its content : Another first: built-in PSK31 and RTTY. Just add a USB keyboard Apart from taking exception - it's not a first, the K3 was I believe (but no point complaining - K3 doesn't have a KB yet), this got me to thinking... Would some bright spark like to produce a very small USB keyboard to paddle converter kit? I would guess a PIC that would produce the appropriate contact closures? This is far beyond me in design, but while we wait for Elecraft to possibly add some form of keyboard interface, this would allow us to drive the built in PSK and RTTY in the K3 via the paddle input. I know there is the NUE-PSK unit, but since most of the requirement is in the K3, I thought a small unit to convert key press to contact closure might be possible? 73 de M0XDF, K3 #174 -- God gives every bird his worm, but he does not throw it into the nest. -Swedish proverb ___ 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 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] two transceivers and one antenna
Hi Scott Haven't done it myself, but I've read descriptions where others have done it with relays. One radio would be connected to the feedline, and the other radio would be connected to a dummy load. At the throw of a switch, their connections would be reversed. That should provide all the protection you would need, plus be more convenient just having a switch at the operating position, instead of a manual coax switch with three coax runs to it. Good luck and 73 Bob N6WG - Original Message - From: Scott McDowell [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Friday, April 18, 2008 7:55 PM Subject: [Elecraft] two transceivers and one antenna Hi I need some ones opinion on something I am thinking about doing. I sure hate to have to say, I wish I hadn't done that! I have two transceivers and one multi-band yagis antenna. Switching the coax from one rig to the other gets to be a hassle. I've been thinking about getting a coaxial switch with two outputs and one input. Then connecting one transceiver to one output and the other transceiver to the other output. Then connect the input to the beam. Is there going to be enough seperation in the switch to keep from damaging the transceiver that is turned off and switched out of the circuit? Has anyone done this? Any information appreciated. 73 Scott N5SM ___ 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] K3 FS on QTH.COM
What is the serial #? What did you pay for it (less shipping)? George On Sat, Apr 19, 2008 at 10:39 AM, Dave G. [EMAIL PROTECTED] wrote: If anyone is interested... K3/100 FS on qth.com Listing #660545 Usual disclaimer No Financial interest... -- Dave G. KK7SS '65 MK III Sprite in Richland, WA Two things are infinite, the universe and human stupidity. But I'm not so sure about the universe. ... Albert Einstein. ___ 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] [K3] PSK etc via external unit and KB
David Some time back there was a QST article to build a cw keyer into a keyboard. I don't know if anyone tried to make a commerical product out of it, but the idea has been around for a while. A little research might turn up a product that already does this. 73, Bob N6WG - Original Message - From: David Ferrington, M0XDF [EMAIL PROTECTED] To: Crafters Elecraft@mailman.qth.net Sent: Saturday, April 19, 2008 3:38 AM Subject: [Elecraft] [K3] PSK etc via external unit and KB Having just read the Waters Stanton add in this months RadCom, I see on pg 2 an add for the Icom IC-7700 and its content : Another first: built-in PSK31 and RTTY. Just add a USB keyboard Apart from taking exception - it's not a first, the K3 was I believe (but no point complaining - K3 doesn't have a KB yet), this got me to thinking... Would some bright spark like to produce a very small USB keyboard to paddle converter kit? I would guess a PIC that would produce the appropriate contact closures? This is far beyond me in design, but while we wait for Elecraft to possibly add some form of keyboard interface, this would allow us to drive the built in PSK and RTTY in the K3 via the paddle input. I know there is the NUE-PSK unit, but since most of the requirement is in the K3, I thought a small unit to convert key press to contact closure might be possible? 73 de M0XDF, K3 #174 -- God gives every bird his worm, but he does not throw it into the nest. -Swedish proverb ___ 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] SPE Expert 1K-FA Amplifer and K2 and K3
The SPE amp will respond to the K3 Band Data output exactly as the Yaesu Band Data Output. The only issue is that the K3 uses open drain outputs. I don't believe that the SPE amp has pull-up resistors on the Band Data inputs, so you may need to put 4.7K pull up resistors to 5V on the K3 band data outputs. But you can put a voltmeter on one of the SPE band data inputs and see if it reads 5VDC. If it does, then you are all set. Remember that the SPE amp puts out full power with about 20 watts of drive, so adjust your K3 drive power accordingly (no ALC interface for the K3 yet). Phil - AD5X ___ 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] Dangerous Low Volage (WAS: Power pole for K3?)
Hi Ron One other precaution I've always used is to ensure that all hot terminals are always female with no exposed metal to accidentally allow a short. I know this is stating the obvious but it may not be to those who are new to this. 73, Bob N6WG - Original Message - From: Ron D'Eau Claire [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Saturday, April 19, 2008 8:10 AM Subject: [Elecraft] Dangerous Low Volage (WAS: Power pole for K3?) I see you got plenty of answers about the APPs, Bill. You will need to provide your own suitable connectors for the power supply end of the cable. You mention having high-capacity batteries and a 70-amp Astron supply. It sounds like you have experience with high-current supplies and understand how dangerous they can be, but there are a lot of readers here who may not have that background. I mention it because many Hams think 13.8 VDC is safe to handle. It's *NOT*. It's not the voltage, of course, but the current. A short often produces a flash of molten metal that may continue for a while if the resistance is enough to avoid tripping a breaker or crowbar circuit. It can take off a finger or a hand, or very severely injure a person in an instant should a ring or watch band get across the supply line, immediately transformed by the current into red-hot metal burning its way through flesh. In my days working in the field as an aircraft radio/radar tech I knew some who were missing fingers because they neglected to take off a wedding band when working. It's not a nice way to lose a hand or finger. It's not always quick. It can take a while, with the ring or watch band welded solidly to the terminals by the current as the hot metal eats its way through a finger or wrist. I've seen tempered steel screwdrivers literally explode into a spray of molten metal blobs when dropped across a high-current, low-voltage supply - blobs of molten steel that splatter the face and eyes of the unwary worker not wearing protective gear. Less severe shorts can set wiring, and the shack, on fire in short order, all without opening a breaker or tripping the crowbar protective circuit in the power supply. Even a more moderate 35 Amp supply can start a fire or cause a severe burn under the right conditions. Working on shipboard and aircraft systems using 12 to 28 VDC at high currents, I've learned to treat such supplies with the same respect I do a 3KV high-voltage supply. The concerns and procedures needed to be safe are different, but either a high voltage or a low-voltage, high-current supply is dangerous in its own way. I use soldered-on ring terminals on my Astron supplies that provide large, low-resistance contact areas with the lugs and which cannot be pulled loose without physically breaking the wire, and I make very sure there are no metallic objects (cabinets, connectors, other equipment, etc.) located where they might be accidentally moved and make contact with exposed supply terminals anywhere. And then I make sure the terminals on my power supply (and anywhere else) are carefully covered and insulated from accidental contact, just in case. Ron AC7AC ___ 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] K3 power supply.
I replaced the rear low-current connectors on the MFJ-4125 with two pairs of Anderson Powerpoles. Info is in the Equipment Modifications section of my website at www.ad5x.com. Phil - AD5X ___ 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] K3 power supply.
MFJ website says two pair of APP's, but they want $25 more. I think you could rig up a couple of pigtails for a lot less than that. No picture yet on the website. Dave W7AQK - Original Message - From: Joe Subich, W4TV [EMAIL PROTECTED] To: 'ab2tc' [EMAIL PROTECTED]; elecraft@mailman.qth.net Sent: Saturday, April 19, 2008 9:02 AM Subject: RE: [Elecraft] K3 power supply. MFJ now have a version of the 4125 with Anderson PowerPole connector on the front panel. I believe it's the MFJ-4125P 73, ... Joe, W4TV ___ 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] K3 power supply.
Correction...guess it's only $15 more. First price I saw for the standard version was on GigaParts. Maybe they will discount the newer version as well. Dave W7AQK - Original Message - From: Joe Subich, W4TV [EMAIL PROTECTED] To: 'ab2tc' [EMAIL PROTECTED]; elecraft@mailman.qth.net Sent: Saturday, April 19, 2008 9:02 AM Subject: RE: [Elecraft] K3 power supply. MFJ now have a version of the 4125 with Anderson PowerPole connector on the front panel. I believe it's the MFJ-4125P 73, ... Joe, W4TV -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of ab2tc Sent: Saturday, April 19, 2008 11:25 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 power supply. And I have been using mine for well over three, first with my IC-718 and now with my K3. No evidence of RF noise or hash whatsoever. In a QST comparative test several years ago, the MFJ-4125 was found found to be one of the quietest of all, regardless of price. The fan could be quieter but it's not obnoxious. Knut - AB2TC zl4vv wrote: I have been using the MFJ 4125 for about two years, with my K2 and now the K3. I have found no evidence of noise at all. 73 Max/ZL4VV -- View this message in context: http://www.nabble.com/K3-power-supply.-tp16778829p16784311.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 ___ 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] K3 power supply.
I think you could rig up a couple of pigtails for a lot less than that. Or modify the 4125 as shown by AD5X: http://www.ad5x.com/images/Presentations/MFJ4125.pdf In any case, the factory built option is there for those who want it. I'm considering PowerPole modified Astron SS30 supplies to free up my bench supply. 73, ... Joe, W4TV -Original Message- From: David Yarnes [mailto:[EMAIL PROTECTED] Sent: Saturday, April 19, 2008 1:10 PM To: [EMAIL PROTECTED]; 'ab2tc'; elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 power supply. MFJ website says two pair of APP's, but they want $25 more. I think you could rig up a couple of pigtails for a lot less than that. No picture yet on the website. Dave W7AQK - Original Message - From: Joe Subich, W4TV [EMAIL PROTECTED] To: 'ab2tc' [EMAIL PROTECTED]; elecraft@mailman.qth.net Sent: Saturday, April 19, 2008 9:02 AM Subject: RE: [Elecraft] K3 power supply. MFJ now have a version of the 4125 with Anderson PowerPole connector on the front panel. I believe it's the MFJ-4125P 73, ... Joe, W4TV ___ 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] SPE Expert 1K-FA Amplifer and K2 and K3
Hi Chris, I am using my SPE amplifier with both my K2 and K3 and it works very well. I have put an entry in the Wiki K3 which describes the band information interfacing. So far I have only used the K3 with this. The only thing you have to watch is the input power to the amplifier. I have my TUNE set at 5W and that is sufficient to get a good SWR reading on the SPE meter. I use about 10-12W for max UK legal out. 73 Stewart G3RXQ On Sat, 19 Apr 2008 14:31:13 -, Chris Page wrote: Is anybody using the SPE Expert 1K-FA amplifer with the K2 or K3, please? I was wondering which CAT option the amplifier needs to be selected to enable it to receive band information from the K2 and K3? Also, I would appreciate any advice on using the amplifier with the K2 and K3 in the light of other's experience. Thanks and 73 de Chris, N4CJ (G4BUE) ___ 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] Dangerous Low Volage (WAS: Power pole for K3?)
On Apr 19, 2008, at 10:06 AM, Robert Tellefsen wrote: Hi Ron One other precaution I've always used is to ensure that all hot terminals are always female with no exposed metal to accidentally allow a short. I know this is stating the obvious but it may not be to those who are new to this. 73, Bob N6WG My TenTec 1340 QRP kit came stock with an RCA jack for the 12 volt supply. I made the mistake of attaching the power cable to my Astron 35 supply, first. I didn't lose any body parts but did cause the supply to relay out when I made accidental contact with the aluminum chassis. Not a good idea on TenTecs part, even though I didn't use good sense in not attaching the cable to the rig first. For QRP, I should have used a small inline fuse in the positive cable lead. I do now. I also have changed the jack to K2 style. 73 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
RE: [Elecraft] two transceivers and one antenna
Although it's a bit on the wimpy side, MFJ makes an RF Safety Switch that does just this. See: http://www.mfjenterprises.com/Product.php?productid=MFJ-1703 It is also possible to build your own - of much higher quality - by using a pair of Top Ten Devices A/BSS relays and some T connectors. 73, ... Joe, W4TV -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Tellefsen Sent: Saturday, April 19, 2008 12:31 PM To: Scott McDowell; elecraft@mailman.qth.net Subject: Re: [Elecraft] two transceivers and one antenna Hi Scott Haven't done it myself, but I've read descriptions where others have done it with relays. One radio would be connected to the feedline, and the other radio would be connected to a dummy load. At the throw of a switch, their connections would be reversed. That should provide all the protection you would need, plus be more convenient just having a switch at the operating position, instead of a manual coax switch with three coax runs to it. Good luck and 73 Bob N6WG - Original Message - From: Scott McDowell [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Friday, April 18, 2008 7:55 PM Subject: [Elecraft] two transceivers and one antenna Hi I need some ones opinion on something I am thinking about doing. I sure hate to have to say, I wish I hadn't done that! I have two transceivers and one multi-band yagis antenna. Switching the coax from one rig to the other gets to be a hassle. I've been thinking about getting a coaxial switch with two outputs and one input. Then connecting one transceiver to one output and the other transceiver to the other output. Then connect the input to the beam. Is there going to be enough seperation in the switch to keep from damaging the transceiver that is turned off and switched out of the circuit? Has anyone done this? Any information appreciated. 73 Scott N5SM ___ 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 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] K3 FS on QTH.COM
George, It's not mine !!! I just happened to see it on qth.com... Sorry ;-( On 19 Apr 2008 at 12:33, George Victor wrote: What is the serial #? What did you pay for it (less shipping)? George On Sat, Apr 19, 2008 at 10:39 AM, Dave G. [EMAIL PROTECTED] wrote: If anyone is interested... K3/100 FS on qth.com Listing #660545 Usual disclaimer No Financial interest... -- Dave G. KK7SS '65 MK III Sprite in Richland, WA Two things are infinite, the universe and human stupidity. But I'm not so sure about the universe. ... Albert Einstein. ___ 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/elecraftHelp: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com -- Dave G. KK7SS '65 MK III Sprite in Richland, WA Two things are infinite, the universe and human stupidity. But I'm not so sure about the universe. ... Albert Einstein. ___ 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] K3 FS on QTH.COM
It was SN 5XX and it has been sold. Jim K4JAF - Original Message - From: Dave G. [EMAIL PROTECTED] To: George Victor [EMAIL PROTECTED]; elecraft@mailman.qth.net Cc: elecraft@mailman.qth.net Sent: Saturday, April 19, 2008 2:04 PM Subject: Re: [Elecraft] K3 FS on QTH.COM George, It's not mine !!! I just happened to see it on qth.com... Sorry ;-( On 19 Apr 2008 at 12:33, George Victor wrote: What is the serial #? What did you pay for it (less shipping)? George On Sat, Apr 19, 2008 at 10:39 AM, Dave G. [EMAIL PROTECTED] wrote: If anyone is interested... K3/100 FS on qth.com Listing #660545 Usual disclaimer No Financial interest... -- Dave G. KK7SS '65 MK III Sprite in Richland, WA Two things are infinite, the universe and human stupidity. But I'm not so sure about the universe. ... Albert Einstein. ___ 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/elecraftHelp: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com -- Dave G. KK7SS '65 MK III Sprite in Richland, WA Two things are infinite, the universe and human stupidity. But I'm not so sure about the universe. ... Albert Einstein. ___ 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] FS K2/100
For sale Mint Elecraft K2-100 With the following options -K2 -K2 HF Transceiver S/N 3553 (late serial already came from day one with matched xtals, VCO temp compensation, pa shield etc) - K2 and KPA100 built with the K2 toroid kit from The Toroidguy, AA3WF - Filters Aligned with Spectrogram -FT100 VFO knob -KIO2 -K2 AUX I/O RS-232 Interface -KNB2 -K2 Noise Blanker -KPA100 -Internal 100 Watt PA -KSB2 -K2 SSB Option - MH2 Elecraft microphone with Heil element - K2DI digital mode interface in the back (RTTY, PSK etc) by EA3BLQ No need to use or disconnect microphone to use the digital soundcard modes - Signalink SL1+ soundcard interface (just connect to line in/out of your PC) - serial rs232 computer interface cable, power cable All manuals included. All in excellent shape and never around smoke. In 9 out of 10 Condition, original builder owner $1050 shipped CONUS paypal OK Wim Dewilder K6TE [EMAIL PROTECTED] http://www.nabble.com/file/p16786970/front_k2_small.jpg -- View this message in context: http://www.nabble.com/FS-K2-100-tp16786970p16786970.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] RS-232 Question
Do you have PORT set to ON in the secondary menu? It may be instructive to check the port using the manual commands shown in the KIO2 manual and Hyperterm or some similar dumb terminal application. Do you have any other devices that are known to work from a serial port? An old external modem for instance? If so, you could connect that to the computer port to check the port operation, Can you move the K2 to another computer with a known good serial port? It is a process of elimination. If you have a 'scope and lots of patience, you can check the TXD and RXD signals to see which ones are working. Check the web for information on RS-232 signalling to see what the expected signal levels are for both mark and space. 73, Don W3FPR DW Holtman wrote: Hello, I have hooked up an old computer out in my shop. I made some cables and I'm in the process of trying to talk to my K2 via the computer. I have a KPA100 in the K2. The software I'm using is the K2 remote from the Elecraft web page. I have set it for comm port1 (the only port available on the computer) and get a message that no K2 can be found. I have ohmed the cables and think they are good. They also have connectors for a KAT100 (which is backordered) and a XV50 (which I'm having other problems). So the only thing connected is the K2 and the computer. Is there an easy way to determine if the problem is in the KPA100, the cables or the computer? Thank you in advance for any help. Best, DW Holtman WB7SSN ___ 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] Dangerous Low Voltage (WAS: Power pole for K3?)
Another low voltage power source that is in common use is the lead-acid storage battery used on cars and especially the deep cycle marine battery favored by hams for backup. Usually a ring or watchband is not a problem because of the terminal spacing at the battery, but the danger is very much present at the other end of the cables where it may be connected to a terminal strip etc. The added danger of these batteries is they can deliver as much as 800 amps depending on the internal resistance of the battery and cables. If the internal resistance is as little as 1/10th Ohm at 14 volts that is 140 amps. The power generated in the battery under these conditions is 140X140/10 or 1960 Watts. 2KW heating the acid contents of a battery can cause it to explode from steam pressure in a matter of seconds, thus spraying everything in the area with sulphuric acid and hot lead. When this happens in a car the result is usually a totalled vehicle and seriously injured mechanic and passers-by. I never use a wrench which has exposed metal surfaces long enough to short a battery, and I always disconnect the negative terminal (- ground assumed here) and cap it before working around them. Al WA6VNN __ In a message dated 4/19/2008 8:11:26 A.M. Pacific Daylight Time, [EMAIL PROTECTED] writes: I see you got plenty of answers about the APPs, Bill. You will need to provide your own suitable connectors for the power supply end of the cable. You mention having high-capacity batteries and a 70-amp Astron supply. It sounds like you have experience with high-current supplies and understand how dangerous they can be, but there are a lot of readers here who may not have that background. I mention it because many Hams think 13.8 VDC is safe to handle. It's *NOT*. It's not the voltage, of course, but the current. A short often produces a flash of molten metal that may continue for a while if the resistance is enough to avoid tripping a breaker or crowbar circuit. It can take off a finger or a hand, or very severely injure a person in an instant should a ring or watch band get across the supply line, immediately transformed by the current into red-hot metal burning its way through flesh. In my days working in the field as an aircraft radio/radar tech I knew some who were missing fingers because they neglected to take off a wedding band when working. It's not a nice way to lose a hand or finger. It's not always quick. It can take a while, with the ring or watch band welded solidly to the terminals by the current as the hot metal eats its way through a finger or wrist. I've seen tempered steel screwdrivers literally explode into a spray of molten metal blobs when dropped across a high-current, low-voltage supply - blobs of molten steel that splatter the face and eyes of the unwary worker not wearing protective gear. Less severe shorts can set wiring, and the shack, on fire in short order, all without opening a breaker or tripping the crowbar protective circuit in the power supply. Even a more moderate 35 Amp supply can start a fire or cause a severe burn under the right conditions. Working on shipboard and aircraft systems using 12 to 28 VDC at high currents, I've learned to treat such supplies with the same respect I do a 3KV high-voltage supply. The concerns and procedures needed to be safe are different, but either a high voltage or a low-voltage, high-current supply is dangerous in its own way. I use soldered-on ring terminals on my Astron supplies that provide large, low-resistance contact areas with the lugs and which cannot be pulled loose without physically breaking the wire, and I make very sure there are no metallic objects (cabinets, connectors, other equipment, etc.) located where they might be accidentally moved and make contact with exposed supply terminals anywhere. And then I make sure the terminals on my power supply (and anywhere else) are carefully covered and insulated from accidental contact, just in case. Ron AC7AC ___ 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 **Need a new ride? Check out the largest site for U.S. used car listings at AOL Autos. (http://autos.aol.com/used?NCID=aolcmp0030002851) ___ 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] K3: Rob Sherwood's full text reply
I currently only have the 2.7kHz 5-pole filter installed and experience absolutely *no* difference in sound switching between USB and LSB on noise. My DSP filter setting is 300-2700 which is my default when QRM is light. I also watch the signal with the spectrum analyzer program SR5 and see my slight high cut from the equalizer, but otherwise no tilt. If there was a tilt, it would reverse when switching between USB and LSB. Maybe I have been lucky. I have the 1.8kHz filter on back order for use during contests or other extreme QRM conditions. Only time will show if it was worth the money. The brick wall feeling of the DSP filters is something else! There is simply absolutely *no* sign of a beat note on the wrong side of zero beat whatsoever. Never experienced that with a non-DSP receiver. Knut - AB2TC DOUGLAS ZWIEBEL wrote: Okay...I sent out about a dozen private forwards around 0800z. Just got back on line, and my in box double that again. So shown below is a cut/paste of the full text NCØB reply. Nothing earth-shattering. I also received (from a separate source) a note indicating that the 250hz filter (which, as mentioned below, is more like 375hz) came in at 98, which seems to fit with what Rob is saying (but Rob never told me 98). ENJOY! de Doug KR2Q from Rob Terri Sherwood [EMAIL PROTECTED] toDOUGLAS ZWIEBEL [EMAIL PROTECTED], date Fri, Apr 18, 2008 at 10:27 PM subject Re: K3 various roofing filters Hi, The results are on my web site now. http://www.sherweng.com/table.html While I did not include the 250 Hz filter (which is more like 375 Hz), it fits between the 200 and 400 in dynamic range (DR3). They all work. I doubt anyone could tell the difference on the air from a DR3 standpoint. One can certainly tell the difference from a bandwidth standpoint. Personally I would use the 500 and 200. One could also choose the 400 and the 200. On SSB I think I would add the 2.1. One can always set the DSP to 1.8 when needed. If a contester only, maybe the 1.8 instead of the 2.1, but I would have to evaluate that over time, and I did not have the 2.1, and I did not listen to the K3 in an SSB contest. The 2.7 in my borrowed K3 had some passband tilt or ripple, and I could never get LSB and USB to sound the same on noise. Feel free to post any of this on the reflector. 73, Rob Sherwood, NC0B ___ 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 -- View this message in context: http://www.nabble.com/K3%3A-Rob-Sherwood%27s-full-text-reply-tp16783407p16787284.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] Spectrogram v16 - FREEWARE
Hi Ken, et al: At 06:23 04/19/2008, Ken K3IU wrote: For those interested, Spectrogram is again available as Freeware. Richard's website, http://www.visualizationsoftware.com/gram/gramdl.html says: Version 16 is being made available as freeware to replace the older freeware versions of the software relied upon by the majority of Spectrogram users. The download at left is a self-extracting setup program that will install Spectrogram on a single computer. Thanks a bunch for this info Ken... but, please remember that the K1 and K2 alignment documentation written for using Spectrogram to align your Xtal Filters is written for using Spectrogram v5.1.7. Version 16 will be considerably different from v5.1.7 so you will have to deal with coming up with some of your own parameter settings (in Spectrogram) since they will no longer match those specified for v5.1.7. There will be NO HARM DONE by using v16, only some possible time lost getting things set up. Spectrogram v5.1.7 is still available on the K1- and K2-specific web pages at http://www.n0ss.net... still free. 73, Tom N0SS ___ 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] K3: Rob Sherwood's full text reply
Knut, no difference here either. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of ab2tc Sent: Saturday, April 19, 2008 4:20 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3: Rob Sherwood's full text reply I currently only have the 2.7kHz 5-pole filter installed and experience absolutely *no* difference in sound switching between USB and LSB on noise. My DSP filter setting is 300-2700 which is my default when QRM is light. I also watch the signal with the spectrum analyzer program SR5 and see my slight high cut from the equalizer, but otherwise no tilt. If there was a tilt, it would reverse when switching between USB and LSB. Maybe I have been lucky. I have the 1.8kHz filter on back order for use during contests or other extreme QRM conditions. Only time will show if it was worth the money. The brick wall feeling of the DSP filters is something else! There is simply absolutely *no* sign of a beat note on the wrong side of zero beat whatsoever. Never experienced that with a non-DSP receiver. Knut - AB2TC DOUGLAS ZWIEBEL wrote: Okay...I sent out about a dozen private forwards around 0800z. Just got back on line, and my in box double that again. So shown below is a cut/paste of the full text NCØB reply. Nothing earth-shattering. I also received (from a separate source) a note indicating that the 250hz filter (which, as mentioned below, is more like 375hz) came in at 98, which seems to fit with what Rob is saying (but Rob never told me 98). ENJOY! de Doug KR2Q from Rob Terri Sherwood [EMAIL PROTECTED] toDOUGLAS ZWIEBEL [EMAIL PROTECTED], date Fri, Apr 18, 2008 at 10:27 PM subject Re: K3 various roofing filters Hi, The results are on my web site now. http://www.sherweng.com/table.html While I did not include the 250 Hz filter (which is more like 375 Hz), it fits between the 200 and 400 in dynamic range (DR3). They all work. I doubt anyone could tell the difference on the air from a DR3 standpoint. One can certainly tell the difference from a bandwidth standpoint. Personally I would use the 500 and 200. One could also choose the 400 and the 200. On SSB I think I would add the 2.1. One can always set the DSP to 1.8 when needed. If a contester only, maybe the 1.8 instead of the 2.1, but I would have to evaluate that over time, and I did not have the 2.1, and I did not listen to the K3 in an SSB contest. The 2.7 in my borrowed K3 had some passband tilt or ripple, and I could never get LSB and USB to sound the same on noise. Feel free to post any of this on the reflector. 73, Rob Sherwood, NC0B ___ 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 -- View this message in context: http://www.nabble.com/K3%3A-Rob-Sherwood%27s-full-text-reply-tp16783407p1678 7284.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 ___ 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] Dangerous Low Voltage (WAS: Power pole for K3?)
I never use a wrench which has exposed metal surfaces long enough to short a battery, and I always disconnect the negative terminal (- ground assumed here) and cap it before working around them. Al WA6VNN Disconnecting power before working on the gear to remove/replace parts is basic to both low and high voltage supplies. My one up-close and frightening experience with low-voltage high-current supply shorts occurred on an F-86 (Korean war era jet fighter) flight line at Lockheed. It was the middle of the night and bitterly cold as I and another tech worked on two fighters sitting side-by-side. They were powered by ground carts. We had lowered the canopies almost all the way down to conserve a little heat in the frigid cockpits as we ran through the avionics ground checks. Suddenly I heard one of the power carts groan under heavy load. It caused me to look up and out of the cockpit to see what was going on. The plane next to me had smoke billowing from the cockpit, coming out around the almost-closed canopy. I could see the other tech's head lying against the canopy. He was apparently unconscious. I hit the canopy button and clambered out as it slowly wound open, yelling for help, very conscious that these planes were fully-fueled bombs sitting wingtip to wingtip waiting for a fire to set them off. We got the guy out. He was splattered with burns but the plane wasn't on fire. Later we learned that he had discovered a defective circuit breaker. He had a replacement with him, but decided he didn't want to open the canopy and climb down to disconnect the power cart. The circuit breaker connected to power by a wire with a lug on the end that attached with a screw into a threaded hole in a large copper bus bar. As he was turning the screw, he dropped the screwdriver and it fell touching the power bus bar and the aluminum side of the console. He got a face full molten metal blobs as the shaft of the tool literally exploded in his face. He instinctively stood bolt upright in the cockpit, smashing his head against the closed canopy and knocking himself unconscious. Lockheed management and the US Air Force were not impressed. They had a badly damaged jet fighter with molten metal drooled down the side of the console and cockpit and it could have been much, much worse. I think he found a new line of work. Even minor short circuits can cause lots of grief. It's very easy to instantly fry a PC board trace with a temporary short circuit. Those can usually be fixed (once you find the break), but it's still a very unnecessary and easily avoided damage by following simple safety protocols, including removing power before touching the circuit to remove parts or taking any other short-cuts. And for those of us who regularly work around equipment with high voltages - a few hundred volts and up - allowing ourselves to be lulled into complacent behavior by the low voltages in most gear today can be dangerous. One time I was troubleshooting a receiver that had something that smelled hot so I was gingerly touching resistors to see if one was overheating when I suddenly remembered I was working on a tube-type receiver with a 250V supply! Ron AC7AC ___ 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] help getting first firmware update onto K3
I am trying to do my first firmware upgrade of the K3 but am unsuccessful at getting it installed. I am using the USB to 9 pin rig cable. I downloaded the Elecraft K3 Utility last night plus I've downloaded the latest drivers from the Prolific website. While I was successful getting the Elecraft K3 firmware onto my computer, I am not able to get it onto the K3. I have listed some things that may help someone understand where I am stuck at and help me get the firmware onto my K3. I apologize for this being so long, but I'd rather not leave anything important out so someone can recognize what's missing. Per the instructions in Elecraft KUSB USB to Serial Adapter looking in Device Manager and then under Ports, the Prolific USB to Serial Comm Port is COM 5 The DRIVER Tab for the Prolific USB to Serial Comm Port Properties says that I have the latest version 2.0.2.8 Under Port Settings of the same Comm Port Properties this is what it says - Bits per second9600 Data Bits8 ParityNone Stop Bits1 Flow ControlNone If I click the ADVANCED Tab in the above, it lets me change the Com Port #.It is still at 5 right now - the default. On the K3, going to CONFIG then FW REVS sub menu it says my CURRENT FIRMWARE installed is 01.69. When I used the Elecraft K3 Utility to get firmware from the Elecraft website the first time it downloaded 7 files onto my computer. Then I tried it later and it said it copied 1 file from Elecraft. Also on the K3 Utility it stated, K3 Boot Loader is ready for MCU Firmware load, RS232 38400 bps I got this message twice in a row. I am still getting the message MCU programming failed. Verify file source and version Turn the K3 off and back on, then re-try the firmware load Looking at the PORT tab of the K3 Utility and doing a test communications for Port 5 - which is the port that the Prolific driver says it's using I get - K3 is running main program, RS232 4800 bps If I try port 4 I get K3 boot loader is ready for MCU firmware load. RS232 38400 bps. Because of the two BPS rates above and the different BPS rate for the Prolific USB driver, should I change my bps in my driver settings or elsewhere? Also, I haven't saved any configurations in the K3 Utility software. Should I, once I get things working? So it looks like I keep running into the same stumbling block, I feel like a bit of a thick head that I don't know why this isn't working. I would appreciate help in getting the firmware installed on the K3. Thanks, Rem K 6 B B Q ___ 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] Dangerous Low Voltage (WAS: Power pole for K3?)
Hi Ron I've noticed a lot of us OFs still have the reflex of putting one hand behind us when the other goes inside a piece of equipment. Lot of us learned it the hard way. :-) 73, Bob N6WG - Original Message - From: Ron D'Eau Claire [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Saturday, April 19, 2008 2:11 PM Subject: RE: [Elecraft] Dangerous Low Voltage (WAS: Power pole for K3?) I never use a wrench which has exposed metal surfaces long enough to short a battery, and I always disconnect the negative terminal (- ground assumed here) and cap it before working around them. Al WA6VNN Disconnecting power before working on the gear to remove/replace parts is basic to both low and high voltage supplies. My one up-close and frightening experience with low-voltage high-current supply shorts occurred on an F-86 (Korean war era jet fighter) flight line at Lockheed. It was the middle of the night and bitterly cold as I and another tech worked on two fighters sitting side-by-side. They were powered by ground carts. We had lowered the canopies almost all the way down to conserve a little heat in the frigid cockpits as we ran through the avionics ground checks. Suddenly I heard one of the power carts groan under heavy load. It caused me to look up and out of the cockpit to see what was going on. The plane next to me had smoke billowing from the cockpit, coming out around the almost-closed canopy. I could see the other tech's head lying against the canopy. He was apparently unconscious. I hit the canopy button and clambered out as it slowly wound open, yelling for help, very conscious that these planes were fully-fueled bombs sitting wingtip to wingtip waiting for a fire to set them off. We got the guy out. He was splattered with burns but the plane wasn't on fire. Later we learned that he had discovered a defective circuit breaker. He had a replacement with him, but decided he didn't want to open the canopy and climb down to disconnect the power cart. The circuit breaker connected to power by a wire with a lug on the end that attached with a screw into a threaded hole in a large copper bus bar. As he was turning the screw, he dropped the screwdriver and it fell touching the power bus bar and the aluminum side of the console. He got a face full molten metal blobs as the shaft of the tool literally exploded in his face. He instinctively stood bolt upright in the cockpit, smashing his head against the closed canopy and knocking himself unconscious. Lockheed management and the US Air Force were not impressed. They had a badly damaged jet fighter with molten metal drooled down the side of the console and cockpit and it could have been much, much worse. I think he found a new line of work. Even minor short circuits can cause lots of grief. It's very easy to instantly fry a PC board trace with a temporary short circuit. Those can usually be fixed (once you find the break), but it's still a very unnecessary and easily avoided damage by following simple safety protocols, including removing power before touching the circuit to remove parts or taking any other short-cuts. And for those of us who regularly work around equipment with high voltages - a few hundred volts and up - allowing ourselves to be lulled into complacent behavior by the low voltages in most gear today can be dangerous. One time I was troubleshooting a receiver that had something that smelled hot so I was gingerly touching resistors to see if one was overheating when I suddenly remembered I was working on a tube-type receiver with a 250V supply! Ron AC7AC ___ 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] help getting first firmware update onto K3
Marin QRP wrote: I am trying to do my first firmware upgrade of the K3 but am unsuccessful at getting it installed. I am still getting the message MCU programming failed. Verify file source and version Turn the K3 off and back on, then re-try the firmware load Look at the directory that you have downloaded the files from elecraft into. You should have at least DTBL0008.HEX HDSP0158.HEX hmcu0178.hex TBOOT7.HEX Make sure the K3 utility is set to use this directory. Check the version of the K3 utility that you are using. Is should be at least 1.0.12.7, and the current version is 1.1.2.28. I am just guessing but the error message sounds as though it is not finding the right files. Because of the two BPS rates above and the different BPS rate for the Prolific USB driver, should I change my bps in my driver settings or elsewhere? Also, I haven't saved any configurations in the K3 Utility software. Should I, once I get things working? The K3 utility figures out the correct baud rate, changes it to 38,400 for the download and then changes it back. So you don't need to do anything. You can save configurations if you are going to play with menu parameters and you want to be able to get back to a known setup. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ___ 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] two transceivers and one antenna
I've used an MFJ-1702C for a number of years and haven't fried anything yet. One of the Alpha-Delta SPDT switches is somewhat pricer but a higher quality switch. Doug W6JD -- Original message -- From: Scott McDowell [EMAIL PROTECTED] Hi I need some ones opinion on something I am thinking about doing. I sure hate to have to say, I wish I hadn't done that! I have two transceivers and one multi-band yagis antenna. Switching the coax from one rig to the other gets to be a hassle. I've been thinking about getting a coaxial switch with two outputs and one input. Then connecting one transceiver to one output and the other transceiver to the other output. Then connect the input to the beam. Is there going to be enough seperation in the switch to keep from damaging the transceiver that is turned off and switched out of the circuit? Has anyone done this? Any information appreciated. 73 Scott N5SM ___ 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] help getting first firmware update onto K3
Looks like COM5 is the right COM port, because of your results with Test Communications. You don't need to adjust the K3's RS-232 speed. The K3 Utility should discover the speed the K3 is set to (it does this by trying all 4 speeds). Your results for Test Communications with COM5 are the expected results. The K3 Utility tried 38,400, 19,200, 9600, and finally succeeded at 4800 bps. After you've done test communications and see the K3 is running main program, speed is 4800 bps, move to the firmware tab and click check versions now. It should display the firmware levels it finds in the firmware folder (the available versions) and the firmware levels it finds in the K3 (the installed in k3 versions). If the firmware in the K3 is older than that in the available column, you'll be informed that new firmware is available. You should be able to click Send All New and that should do it. Dick, K6KR -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Marin QRP Sent: Saturday, April 19, 2008 2:24 PM To: elecraft@mailman.qth.net Subject: [Elecraft] help getting first firmware update onto K3 I am trying to do my first firmware upgrade of the K3 but am unsuccessful at getting it installed. I am using the USB to 9 pin rig cable. I downloaded the Elecraft K3 Utility last night plus I've downloaded the latest drivers from the Prolific website. While I was successful getting the Elecraft K3 firmware onto my computer, I am not able to get it onto the K3. I have listed some things that may help someone understand where I am stuck at and help me get the firmware onto my K3. I apologize for this being so long, but I'd rather not leave anything important out so someone can recognize what's missing. Per the instructions in Elecraft KUSB USB to Serial Adapter looking in Device Manager and then under Ports, the Prolific USB to Serial Comm Port is COM 5 The DRIVER Tab for the Prolific USB to Serial Comm Port Properties says that I have the latest version 2.0.2.8 Under Port Settings of the same Comm Port Properties this is what it says - Bits per second9600 Data Bits8 ParityNone Stop Bits1 Flow ControlNone If I click the ADVANCED Tab in the above, it lets me change the Com Port #.It is still at 5 right now - the default. On the K3, going to CONFIG then FW REVS sub menu it says my CURRENT FIRMWARE installed is 01.69. When I used the Elecraft K3 Utility to get firmware from the Elecraft website the first time it downloaded 7 files onto my computer. Then I tried it later and it said it copied 1 file from Elecraft. Also on the K3 Utility it stated, K3 Boot Loader is ready for MCU Firmware load, RS232 38400 bps I got this message twice in a row. I am still getting the message MCU programming failed. Verify file source and version Turn the K3 off and back on, then re-try the firmware load Looking at the PORT tab of the K3 Utility and doing a test communications for Port 5 - which is the port that the Prolific driver says it's using I get - K3 is running main program, RS232 4800 bps If I try port 4 I get K3 boot loader is ready for MCU firmware load. RS232 38400 bps. Because of the two BPS rates above and the different BPS rate for the Prolific USB driver, should I change my bps in my driver settings or elsewhere? Also, I haven't saved any configurations in the K3 Utility software. Should I, once I get things working? So it looks like I keep running into the same stumbling block, I feel like a bit of a thick head that I don't know why this isn't working. I would appreciate help in getting the firmware installed on the K3. Thanks, Rem K 6 B B Q ___ 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] Dangerous Low Voltage (WAS: Power pole for K3?)
And not obvious, unless you're seen the results, but removing conductive jewelry, including your wedding ring, is a highly desireable. I have seen a person who totally lost the use of the appropriate finger because his wife wouldn't let him take it off. Dual-battery setups require particular care, too. 73, doug From: Robert Tellefsen [EMAIL PROTECTED] Date: Sat, 19 Apr 2008 14:39:44 -0700 Hi Ron I've noticed a lot of us OFs still have the reflex of putting one hand behind us when the other goes inside a piece of equipment. Lot of us learned it the hard way. :-) 73, Bob N6WG - Original Message - From: Ron D'Eau Claire [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Saturday, April 19, 2008 2:11 PM Subject: RE: [Elecraft] Dangerous Low Voltage (WAS: Power pole for K3?) I never use a wrench which has exposed metal surfaces long enough to short a battery, and I always disconnect the negative terminal (- ground assumed here) and cap it before working around them. Al WA6VNN ___ 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] Using a Softrock Lite 6.2 as a K2 Panadapter
I've completed a detailed analysis with measured data using a Softrock Lite 6.2, K2 IF version as a panadapter. The details are at a new web page: http://www.cliftonlaboratories.com/using_softrock_as_a_panadapter_for_the_k2.htm The measured data shows that the Z1 buffer amplifier is quite efficient at handling the Softrock's LO leakage and also that setting the Z1 buffer amplifier to provide around net 0 dB gain (1 uV into the antenna port at, say 7 MHz, corresponds to 1 uV out of the Z1 IF sample port at 4915 KHz) is about right with the Softrock. Some may prefer a slight bit more gain, which may be achieved by a different gain setting resistor in the Z1. The need for additional gain may be more important for VHF/UHF work, or quiet band conditions. In my tests with both lab gear and listening on 40 meters, I did not find additional gain necessary. Jack K8ZOA www.cliftonlaboratories.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] NK8Q on AT with KX1 Now! 7:51pm
Hello all, Grab Mark, NK8Q on 10.106mhz. He's on the Appalachian Trail in PA. 72, Ed , WA3WSJ ___ 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] Mark...NK8Q on 10106.2 now with KX-1 on AT in PA.
He was solid 569 here in AL, near the Gulf. 73 John K4NP ___ 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
FW: [Elecraft] Mark...NK8Q on 10106.2 now with KX-1 on AT in PA.
No copy in Michigan. Thought my antenna was gone but then I worked PR7AR just up freq fairly solid. I copied Ron 589. Must be on the wrong side of the mountain. Werner N8BB -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John Sent: Saturday, April 19, 2008 8:10 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Mark...NK8Q on 10106.2 now with KX-1 on AT in PA. He was solid 569 here in AL, near the Gulf. 73 John K4NP ___ 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. Version: 7.5.524 / Virus Database: 269.23.2/1386 - Release Date: 4/18/2008 5:24 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] Tomorrow night is RFTB !!!
Tomorrow night is Run For The Bacon night. The monthly QRP Sprint sponsored by the Flying Pigs QRP Club International. For full details, please visit http://www.gentzow.com/fpqrp/fpqrprun.php 73 de Larry W2LJ FP #612 ___ 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] Dangerous Low Voltage (WAS: Power pole for K3?)
Yep. I still do that too! Ron AC7AC -Original Message- From: Robert Tellefsen [mailto:[EMAIL PROTECTED] Sent: Saturday, April 19, 2008 2:40 PM To: Ron D'Eau Claire; elecraft@mailman.qth.net Subject: Re: [Elecraft] Dangerous Low Voltage (WAS: Power pole for K3?) Hi Ron I've noticed a lot of us OFs still have the reflex of putting one hand behind us when the other goes inside a piece of equipment. Lot of us learned it the hard way. :-) 73, Bob N6WG ___ 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] Firmware installed - thank you
Thanks to everyone who contacted me about my inability to get the K3 to take the firmware revision from my computer hard drive. I didn't have any aha moments as to what made the thing work later, it could have been a matter of having the wrong thing turned on or hooked up first or maybe that I decided to save again the place where I want the downloaded files kept and retrieved from. The K3 Utility already specified the same place I resaved it to tonight, but after that things changed as I got a pop up box listing the contents of the different upgrades. I went from firmware version 01.69 to 01.78. Thank you again for all of your help. Rem K 6 B B Q ___ 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
