[Elecraft] UK Elecraft net report for Sunday 14th December
Conditions this week seemed poor initially, we managed with conditions slowly improving. There were three new stations on the net which is always a welcome sign. Topics included: Audio thump at switch on with the K3, is this a recent firmware issue or not? Audio quality on AM broadcast and external speaker(s) compared to the internal one, Logger 32 and the K3 USB adapter, Heil microphone/headset connecting leads, Heil inserts, more on the recent AF modifications - does it make any difference? PLL problems on 10m and 6m with a new K3. Stations were: G0MJW, Mike G0VGS, Ian MM0XDG, David GM0GAV, Gavin G3YYD, David MM0GPZ, Gordon G4NWJ, Jim GM0ELP, Doug 73 until next week. Dave, G4AON K3/100 #80, Acom 1000, dipole ___ 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: [K3] [Elecraft] Audio at startup
I have done some research on this issue and the thread Loud audio blast on power up is actually the same problem. Is there a fix Joe G wrote: K3 #2120 Firmware 2.67 On SSB and all bands, at startup audio is low (can still hear signal) and after about 2 seconds it increases. This happens when AGC is either fast or slow. I have turned RF Gain up to max and it still happens intermittently. Can somone give me some guidance - Joe W1JGS -- View this message in context: http://n2.nabble.com/Audio-at-startup-tp1651941p1654261.html Sent from the [K3] 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] no station...
Hi, I just built my K3, following the assembly manual, all is OK, and pass the base test and calibration. But, I can't hear any DX signal, only some strong broadcasting station and a local ham station just 500 meter close my home. My modal is, K3/100 + KXV3, any suggestion is welcome! 73! de BA7NQ Terry ___ 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] Peculiarities of RF gain
K3 is fatiguing to listen on SSB for a long time because of lots of gain and white noise on an empty band. One can try to reduce RF gain, but this works differently in K3. 1. The range of RF gain control is limited. 2. While gain is reduced, the band noise does not seem to be reduced as much. 3. RF gain almost does not move S-meter so all S-meter readings with RF gain reduced are incorrect. Any ideas? Ignacy -- View this message in context: http://n2.nabble.com/Peculiarities-of-RF-gain-tp1654304p1654304.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 no station...
Terry Make sure you haven't the RX icon showing on the display, if you have the RF is being routed via the KXV3 RF IN/OUT and is going nowhere unless you either have a BNC/BNC lead on those sockets or an external antenna on the RF IN. I assume it transmits OK and that you have the filters correctly fitted? 73 Dave, G4AON K3/100 #80 Hi, I just built my K3, following the assembly manual, all is OK, and pass the base test and calibration. But, I can't hear any DX signal, only some strong broadcasting station and a local ham station just 500 meter close my home. My modal is, K3/100 + KXV3, any suggestion is welcome! 73! de BA7NQ Terry ___ 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] Transport Case for K3?
Go to ebay and look for Pelican cases, either 1500 or 1600 series depending on how much support gear goes with the rig. ND3F used my K3 in C6 with keyer, cables, power supply all in a 1600 case and it would take the plane running OVER the case to damage the radio. Plus, the cases are waterproof to something like 25 feet and have a lifetime warranty. -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Cady, Fred Sent: Friday, December 12, 2008 8:16 AM To: jma...@k8nd.com; elecraft@mailman.qth.net Subject: RE: [Elecraft] Transport Case for K3? Ditto the remarks on the cases Rose Kopp makes (elecraftcov...@rfwave.net). I used one on the trip to C6 for CQWW but put it in my carryon. I've travelled for years with the K2 (and took it too this year) by just wrapping it with a largish piece of soft foam and then packing it in the checked suitcase. Using Rose's case with some foam around the K3 would be OK in my view for checked luggage. Fred KE7X -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jeff Maass Sent: Friday, December 12, 2008 12:00 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Transport Case for K3? I'm looking for recommendations for a small padded case for a K3, which could in turn be placed into checked luggage. I'd like something not much larger than the radio itself, with space for the radio alone. What have others found that will protect a K3 during transportation? 73, Jeff Maass K8ND ___ 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 This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. ___ 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] Transport Case for K3?
Go to ebay and look for Pelican cases, either 1500 or 1600 series depending on how much support gear goes with the rig. ND3F used my K3 in C6 with keyer, cables, power supply all in a 1600 case and it would take the plane running OVER the case to damage the radio. An option with the 1500 series is the 1526, that gives you the ability to use foam or a convertible travel bag. I use the foam for tough long-distance transports, and the bag when I'm on short travel visits http://www.boss-safety.com/shop/pelican-1526-protector-case-with-convertible-travel-p-1664.html Paul, W9AC ___ 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 adjusting FLx gains
I finally broke out my Elecraft XG-2 and performed the s-meter calibration on my K3. While I was at it, I used the AFV measurement function of the K3 to check out the filter gain settings that I had previously setup by ear. Of my 3 CW filters, one needed a one dB correction. The rest matched up very well to the voltage output at the center of my 2.7 KHz filter. 73, Chuck NI0C ___ 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: KDVR Status
Hi Everyone, Has anyone with a K3 Serial Number around 370 received their KDVR or received notice of its upcoming shipment? Thanks in advance, Dave N1LQ ___ 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] Previous Firmware
Where can I find copies of previos versions of official firmware - Joe W1JGS -- View this message in context: http://n2.nabble.com/Previous-Firmware-tp1655018p1655018.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: KDVR Status
Dave, I have Serial #974 and received an E Mail from La Vonna ( account...@elecraft.com ) yesterday that my KDVR would be shipping within the next 2 weeks. You might want to check see if they sent you an E Mail and didn't get a confirmation E mail back from you. 73 Al WB6HPF David and Dianne on Comcast wrote: Hi Everyone, Has anyone with a K3 Serial Number around 370 received their KDVR or received notice of its upcoming shipment? Thanks in advance, Dave N1LQ ___ 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://n2.nabble.com/K3%3A-KDVR-Status-tp1654990p1655025.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] DVR monitor function
The DVR works great ... yet I have a question or suggestion... When I run SSB I have the monitor level turned to 0 ( off)... and then I do not hear the memory playback It is very strange knowing you are Xmiting, and not hearing what's going out. Could there be a way to set a monitor level for the playback of the memories??? different than the regular monitor level? Am I alone in this blind xmit thought? bill ___ 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: [K3] [Elecraft] Audio at startup
Yes. In f/w test right now. No need for additional data. Thanks for the info from everyone! :-) 73, Eric WA6HHQ Elecraft _..._ -Original Message- From: Joe G jgsch...@verizon.net Date: Sunday, Dec 14, 2008 3:32 am Subject: Re: [K3] [Elecraft] Audio at startup To: elecraft@mailman.qth.net I have done some research on this issue and the thread Loud audio blast on power up is actually the same problem. Is there a fix Joe G wrote: K3 #2120 Firmware 2.67 On SSB and all bands, at startup audio is low (can still hear signal) and after about 2 seconds it increases. This happens when AGC is either fast or slow. I have turned RF Gain up to max and it still happens intermittently. Can somone give me some guidance - Joe W1JGS -- View this message in context: http://n2.nabble.com/Audio-at-startup-tp1651941p1654261.html Sent from the [K3] 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: KDVR Status
Got Mine 12/12/08 Phil # 609 - Original Message - From: David and Dianne on Comcast dhh...@comcast.net To: elecraft@mailman.qth.net Sent: Sunday, December 14, 2008 12:15 PM Subject: [Elecraft] K3: KDVR Status Hi Everyone, Has anyone with a K3 Serial Number around 370 received their KDVR or received notice of its upcoming shipment? Thanks in advance, Dave N1LQ ___ 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 - http://www.avg.com Version: 8.0.176 / Virus Database: 270.9.18/1848 - Release Date: 12/14/2008 12:28 PM No virus found in this outgoing message. Checked by AVG - http://www.avg.com Version: 8.0.176 / Virus Database: 270.9.18/1848 - Release Date: 12/14/2008 12:28 PM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] [K3] f/w 2.73/1.98 power calibration
Steve Ward said: I just applied the latest beta firmware as I have done many times before, and it looks like this time my power calibration went out the window. I'm putting out about 70w on PSK31 when I dialed in 45. Just wanted to give folks a heads-up to watch their power output when they start operating under new firmware, it might be time to re-calibrate! It's more than just the power calibration. Even after calibrating power and setting the requested power below 50W, with either 2.73/1.98 or 2.72/1.98 the power output on PSK31 (in DATA A) mode often exceeds the requested power, which results in splatter. I have been having to constantly ride the LINE IN and/or sound card output level controls in this weekend's PSK contest to keep the power below 50W and PSK signal quality acceptable; I have now switched back to 2.67/1.96 for the remainder of the contest. 73, Rich VE3KI K3 #1595 ___ 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] WTB: KX1
WTB: Elecraft KX1 with KXB3080-m adapter KXAT1 internal ATU. Rich N4EX homo...@earthlink.net EarthLink Revolves Around You.___ 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] LINE OUT output to low?
Hello everyone! Greetings from northeast of Brazil! I think this topic has somehow been discussed before but it was not conclusive. Forgive-me in case I´m wrong. While trying to make audio recordings using the K3 line level output and my Marantz PMD620 handheld audio recorder (http://www.d-mpro.eu.com/index2.php?CID=3Pid=139action=detaillang=eng) I found out that the output level of the/my K3 (#1164) is not high enough to make a good recording, no matter I turn the CONFIG LINE OUT to 100%. Actually it is perhaps 40% lower of what (I think) is it supposed to be. I´ve used the same Marantz recorder many times, plugged in others receivers/transceivers, and most of the times I´ve to attenuate the input level to avoid overload and distortion. Is something wrong with my K3? Can the AF stage upgrade help me with that? According to the project, what is the nominal line level output of the K3? Thanks in advance. André Santos, PT7AT -- View this message in context: http://n2.nabble.com/LINE-OUT-output-to-low--tp1655484p1655484.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] Not Elecraft - PA3AKE Project update - DDS
Hi all, I have been talking to Colin Horrabin, G3SBI, and we spoke about the good work Meirtein Bakker, PA3AKE, is doing on his high performance analog front-end receiver using the H-Mode Mixer. Martein is a very good research engineer and amateur radio. With his knowledge, determination and attention, using homemade test equipment and a WG spectrum analyzer he has identified a design problem in the AD9910 which will probably also affect the AD9912 and other recent DDS chips by ADI. Colin was able to talk to Analog Device high speed DDS group in North Carolina. There was a great deal of reluctance to accept Martein's findings. Eventually they were able to duplicate his results and they were very grateful to Martein because the same mistake will not be made in their new designs. We have a very low phase noise with ADI 9910-12 DDS but we are discovering AM noise a problem not present with the AD9951. As Colin stated, the remarkable thing is that it has taken an amateur radio state of the art receiver project to identify this and it has not been found by Analog Devices big customers with all their high tech test equipment. The bad news is that it is unlikely there will be a chip revision, even though the fix is simple unless there is pressure from a major customer. Maybe this is a good pressure some of our colleagues could apply to ADI from their engineering key positions. Analog Devices is a company we all have a lot of respect for. The high speed DDS chips are a major technical achievement and are useful to our hobby as Martein will show. During chip development the design team probably paid too much attention to results from their high tech measuring equipment when by design it rejected a device parameter they should also have been looking for. Martein has just published an update to report on the evaluation of the AD9910 DDS chip to be used as the DDS-Local Oscillator that complements the Down Conversion Frontend. The research regarding the AD9910 and especially its noise characteristics is finished. Those interested can visit his web page: http://www.xs4all.nl/~martein/pa3ake/hmode/index.html 73 and with the occasion Season’s Greetings Gian I7SWX ___ 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] Power runaway on 10m
Working in the 10m contest I noticed that K3 used some 25A of current. After the calibration, teh following happens: After a new calibration Pwr/K2 PWR/LP-100 Curent 705812A-stable 100 8015A-stable 120 90 20A-up At 120W set, the power increases in 1 second to 25A and the radio resets to low power. When the current increases, the output power stays the same. It seems that other bands are no problem.For example, on 160 teh power is set to 120, LP-100 shows 119W, and the current is 16A stable. Ignacy, NO9E -- View this message in context: http://n2.nabble.com/Power-runaway-on-10m-tp1655527p1655527.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] K3 No speaker audio
I operated in the 10 meter contest for several hours yesterday using my K3 and laptop computer using N1MM. I noticed low audio and increased it by going to the Hi setting in the config menu. It helped some but audio still seemed low. Speaker audio finally failed completely. Also, a component(s) somewhere smoked as I noticed a whisp of smoke rising from the ventilation slots near the PA. I quickly pulled all power to the radio. I have pretty much dismantled the K3 except for the front panel and cannot find any damaged components. After reassembling the K3 and powering it up and all seems to work normally except there is no speaker audio. I noticed a similar failure occured with the K3 tested by the ARRL and mentioned in their report in January QST. My next step will be to pull the front panel off and check out the DSP board. I would really appreciate any ideas. Todd, WA7U ___ 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] Possible utility program conflict?
After some time noticing that my K-3 was looking rather lonely sitting all by itself on the operating desk I felt that it would greatly benefit from the addition of a sibling. Hence, I ordered a second K-3 fully loaded. It then came to me that perhaps the utility program may be confused by presence of the two radios. When it comes time to update firmware will the single utility program know which radio it is dealing with or is necessary, and possible, to have a second copy of the utility program on the computer, one for each radio? The configuration of the two radios will be slightly different with a different lineup of roofing filters in each. Somehow, I think one copy will be sufficient but since I have yet to encounter this situation I thought it would do no harm to ask. Any information would be gratefully received. Bruce-W9FU ___ 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] NG0R - K2 Build/Alignment Issue
John, I just looked back at your prior Q7/Q8 measurements and noticed that you have less than 6 volts on the collectors - sorry that I did not notice that before. That may be the sole reason for your low power output. When the voltage is low, a Hi Cur message will often appear, and the output power may be low. The reason -- in the way that the K2 controls power, it operates in a closed loop that is looking for the requested power output - if the actual power is low, the K2 increases the drive to attempt to develop more power. At the same time, if the voltage to the PA transistors is low, more current must be drawn to produce the requested power (P = V x I -- reduce the voltage and the current must increase to maintain equal power). OK, here is my way of getting to the bottom of a problem like yours (part thoughts/questions, part things to measure and do): For some reason, the Q7/Q8 collector voltage is low during transmit. Are you using a good power supply capable of more than 3 Amps output while maintaining a voltage of 12 to 14 volts? Are you using a power cord with an adequate size wire? I recommend #16 gauge, but #18 will likely be OK (but no smaller). Are the connections to your power supply tight? How about the soldering of the plug that goes into the K2? If there are any doubts, measure the end to end resistance of the power cord (measure both the positive and negative leads - both are involved in conducting the current). Check the voltage at the power supply output during transmit - if the voltage drops substantially there, you can blame the power supply (and there may be nothing wrong with the K2). Should you find yourself in a situation with a bad power supply and no suitable replacement, borrow the battery from your lawn tractor or something of that sort and run the K2 from that to test. If the power supply voltage is holding up (at least 11.5 volts, prefer more) during transmit, you will have to find the place in the K2 where the large voltage drop is occurring. During transmit, measure the voltage at these points in order: 1) The center of the input power jack (voltage should be the same as the supply less any drop in the wire). 2) The Anode of D10 (should be the same as above) 3) The Cathode of D10 (should be 0.1 to 0.2 volts less than above) 4) The Cathode of D12 (same as cathode of D10, but this checks the switch too). 5) The 'C' and 'B' pads of T3 (same as the cathode of D12) 6) The 'A' and 'D' pads of T3 (more than 0.2 volt less here indicates improper soldering of T3). 7) The collectors of Q7 and Q8 (should be the same as #6 above). If all is working correctly, you should have a voltage on the Q7/Q8 collectors that is only 0.3 to 0.5 volts less than at your power supply output. Find out where the severe voltage drop is occurring and correct it. 73, Don W3FPR John Hoaglun wrote: Hi Don the group, I replaced Q7, Q8, and Q11, and Q13 this morning. The initial smoke test is showing the same results. I am probably going to take the radio to a friend's house that has an o-scope and he is better at electrical theory that I am. Your T5 is an interesting comment. Are there artifacts that we can check for around T5? Plan for today: 1. I am going to go repeak the band pass filters on receive and transmit. 2. Retest band by band. (I will probably still have an issue) 3. Remove the W1 jumper, solder a small piece of coax jumper into place and test independent of the Low Pass Filters. I really need to determine if the problem is in one of three areas: Band Pass, RF bias, or LowPass. Keep your thoughts coming... so far this is kicking my butt. Thanks, JH - John Hoaglun NG0R - EN25 http://www.hoaglun.com -Original Message- From: Don Wilhelm [mailto:w3...@embarqmail.com] John, It is difficult to say because the 2 transistors are tightly coupled. One thing I can say is that the emitter voltage is suspect. Both emitters are tied to the ground plane and should be at the same RF potential. OTOH, the difference between 24mv and 0.4mv could be expained away based on RF pickup by the ground lead on the RF Probe - I don't know how long you probe ground lead is, but if it is much more than 3 inches, it is suspect too. The best method of analysis is substitution, but that means changing the PA transistors. Wait until you have the replacement transistors in hand and just change them. If that does not fix the situation, look more carefully at T5, T4, and the low pass filters. I can explain the HI Cur messages by going into detail about how the K2 controls power output, but for now, 'just believe' that one failing PA transistor can cause that as well as power output at approximately half the expected value. 73, Don W3FPR John Hoaglun wrote: K2 Gurus... still looking for your magic. :-) Based upon some feedback from Gary I went poking around the radio with the RF probe. I
Re: [Elecraft] K3 No speaker audio
See my message today. On 10m once I set the power high, the PA current increase an the radio PA resets. Bo problem on 12m. It is possibly that something worse happens when the fuse is not working properly. AJ4F thinks that it may be a broken capacitor although he thought of K2. Ignacy, NO9E -- View this message in context: http://n2.nabble.com/K3--No-speaker-audio-tp1655594p1655790.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] Possible utility program conflict?
W0YK and I (and several others) have two K3s. You'll need to attach them to different COM ports if you want them connected concurrently. This is why the K3 Utility displays the K3 Serial Number in the Firmware Versions group box on the Firmware page. You can run one copy of the K3 Utility and change ports on the Ports tab to switch from one rig to the other. This is what I'd recommend. Or you can launch a second copy of the K3 Utility. They share the same area for remembering the options you've selected (but not what's installed in the radios, that is read from the K3 each time). Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bruce McLaughlin Sent: Sunday, December 14, 2008 1:58 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Possible utility program conflict? After some time noticing that my K-3 was looking rather lonely sitting all by itself on the operating desk I felt that it would greatly benefit from the addition of a sibling. Hence, I ordered a second K-3 fully loaded. It then came to me that perhaps the utility program may be confused by presence of the two radios. When it comes time to update firmware will the single utility program know which radio it is dealing with or is necessary, and possible, to have a second copy of the utility program on the computer, one for each radio? The configuration of the two radios will be slightly different with a different lineup of roofing filters in each. Somehow, I think one copy will be sufficient but since I have yet to encounter this situation I thought it would do no harm to ask. Any information would be gratefully received. Bruce-W9FU ___ 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 CW mode and key-out
After the latest firmware update I noticed that when in CW mode the Key Out was switching with the Dit's and Dah's which wasn't the case before. I only could prevent this by switching the VOX on at the front panel. I guess the older version had automatically the VOX on, but didn't show it on the display. The CW-delay with the digital potentiometer works as expected and as before. BTW: I had the QSK set at SEMI (now and before) Was this an intentional change? 73's, Evert PA2KW PS latest version of HRD and K3 firmware works at good speed now (a question from me a couple of weeks ago) ___ 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] Not Elecraft - PA3AKE Project update - DDS
Thanks Gian, will be in touch about this ASAP. 73, Geoff GM4ESD - Original Message - From: Giancarlo Moda i7...@yahoo.com To: elecraft@mailman.qth.net Sent: Sunday, December 14, 2008 8:29 PM Subject: [Elecraft] Not Elecraft - PA3AKE Project update - DDS Hi all, I have been talking to Colin Horrabin, G3SBI, and we spoke about the good work Meirtein Bakker, PA3AKE, is doing on his high performance analog front-end receiver using the H-Mode Mixer. Martein is a very good research engineer and amateur radio. With his knowledge, determination and attention, using homemade test equipment and a WG spectrum analyzer he has identified a design problem in the AD9910 which will probably also affect the AD9912 and other recent DDS chips by ADI. Colin was able to talk to Analog Device high speed DDS group in North Carolina. There was a great deal of reluctance to accept Martein's findings. Eventually they were able to duplicate his results and they were very grateful to Martein because the same mistake will not be made in their new designs. We have a very low phase noise with ADI 9910-12 DDS but we are discovering AM noise a problem not present with the AD9951. As Colin stated, the remarkable thing is that it has taken an amateur radio state of the art receiver project to identify this - snip ___ 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 Subreceiver problem
Hi All, I installed my KRX3 last week and it seemed to be working well. However, today, during the 10m contest, I suddenly was unable to get any signals through it (just normal audio hiss). Now when I press the SUB button, I see a brief ERR PL2 message. I tried redoing the VCO calibration for the subreceiver, but at the end of the calibration routine it stopped and the display indicated E 8 and ERR VCO Unless I'm doing something stupid - always a possibility - I'm guessing the synthesizer in the subreceiver failed, but thought I'd see if anyone has any suggestions before I contact Customer Support. FYI, this is my second K3 problem this month. The first was when an output xfmr on the KPA3 module shorted, during the CQ WWDX Test. Somebody up there doesn't want me to work contests with my K3! 73, Jim W8ZR ___ 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] LINE OUT output too low?
Hello everyone! Greetings from northeast of Brazil! I think this topic has somehow been discussed before but it was not conclusive. Forgive-me in case I´m wrong. While trying to make audio recordings using the K3 line level output and my Marantz PMD620 handheld audio recorder ( http://www.d-mpro.eu.com/index2.php?CID=3Pid=139action=detaillang=eng) I found out that the output level of the/my K3 (#1164) is not high enough to make a good recording, no matter I turn the CONFIG LINE OUT to 100%. I´ve used the same Marantz recorder many times, plugged in others receivers/transceivers, and most of the times I´ve to attenuate the input level to avoid overload and distortion. Is something wrong with my K3? Can the AF stage upgrade help me with that? According to the K3 project, what is the nominal line level output of the K3? Thanks in advance. André Santos, PT7AT ___ 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] Strange problem when switching modes from VFO A to B
I have VFO A programmed for CW on each band, VFO B programmed for SSB (makes no difference which sideband ). Power up the K3 on VFO A then switch over to VFO B and the signal generated is extremely distorted and sounds like it is being transmitted via a very narrow filter. To correct this problem simply switch the mode from L or USB to CW and back again to L or USB. Audio is then restored to normal. I have the filters programmed correctly, the 2.7KHz filter is used for transmit. I am using the ESSB mode with a 4 KHz filter. This problem is independent of band. I mentioned this to Gary who passed it onto Lyle and who was unable to make it happen. I am using firmware 2.38 DSP 1.92. I am waiting for an update which will fix the turn on audio spike before updating. Any suggestions ? It is just a nuisance getting a report of who is that calling!!! 73, Jack, W3TMZ ___ 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] f/w 2.73/1.98 power calibration
Have you tried adjusting TXG VCE? With latest firmware, a setting of -2dB puts my PSK31 power right where it belongs for a given requested power out. There's then no need to ride the audio input level, which is a bad idea given the way the K3 ALC works. Bob NW8L On Sun, Dec 14, 2008 at 11:44 AM, Richard Ferch ve3...@storm.ca wrote: Steve Ward said: I just applied the latest beta firmware as I have done many times before, and it looks like this time my power calibration went out the window. I'm putting out about 70w on PSK31 when I dialed in 45. Just wanted to give folks a heads-up to watch their power output when they start operating under new firmware, it might be time to re-calibrate! It's more than just the power calibration. Even after calibrating power and setting the requested power below 50W, with either 2.73/1.98 or 2.72/1.98 the power output on PSK31 (in DATA A) mode often exceeds the requested power, which results in splatter. I have been having to constantly ride the LINE IN and/or sound card output level controls in this weekend's PSK contest to keep the power below 50W and PSK signal quality acceptable; I have now switched back to 2.67/1.96 for the remainder of the contest. 73, Rich VE3KI K3 #1595 ___ 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] Microphone Upgrade
Does anyone have a commercial mic on their K3? I was thinking of getting a Neumann TLM-103. Is it a lot of trouble to get this condenser mic working on the K3? I have the 6 khz filter for am/ssb and for ESSB, so far I found that it goes to 4 khz. Whats involved with this? -- View this message in context: http://n2.nabble.com/Microphone-Upgrade-tp1656450p1656450.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] Microphone Upgrade
I use a TLM-103 for audio recording. It's truly a wonderful mic for recording vocals and acoustic guitar. But dang, Man! Ain't that a bit overkill? ;) David, W4SMT --- On Sun, 12/14/08, -.-. --.-N3TU -.-. --.- connectme...@hotmail.com wrote: From: -.-. --.-N3TU -.-. --.- connectme...@hotmail.com Subject: [Elecraft] Microphone Upgrade To: elecraft@mailman.qth.net Date: Sunday, December 14, 2008, 9:23 PM Does anyone have a commercial mic on their K3? I was thinking of getting a Neumann TLM-103. Is it a lot of trouble to get this condenser mic working on the K3? I have the 6 khz filter for am/ssb and for ESSB, so far I found that it goes to 4 khz. Whats involved with this? -- View this message in context: http://n2.nabble.com/Microphone-Upgrade-tp1656450p1656450.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] Microphone Upgrade
I have a couple of these mics. The one problem you'll find imediately is you need phantom power for them. If you use a mixer board, you likely already have phantom power on it. I use a Mackie 1402 VLZ Pro but you can get a cheaper model on ebay. Or you can simply get a phantom power supply Roland makes one that ought to be available on Eay also. The TLM is a nice mic. Gary KA1J Does anyone have a commercial mic on their K3? I was thinking of getting a Neumann TLM-103. Is it a lot of trouble to get this condenser mic working on the K3? I have the 6 khz filter for am/ssb and for ESSB, so far I found that it goes to 4 khz. Whats involved with this? -- View this message in context: http://n2.nabble.com/Microphone-Upgrade-tp1656450p1656450.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] LINE OUT output too low?
Andre, I have not measured the K3 line out signal level - it does depend on the input signal level to the antenna. However, it should work fine with most recording devices, unless that device presents a low impedance input (which would require more driving power). You could try reducing the series resistors on the input side of the isolation transformers (see page 8 of the K3AFMDKT instructions) which may help. The mod kit addresses distortion, but should also help to increase the output level. 73, Don W3FPR André Santos wrote: Hello everyone! Greetings from northeast of Brazil! I think this topic has somehow been discussed before but it was not conclusive. Forgive-me in case I´m wrong. While trying to make audio recordings using the K3 line level output and my Marantz PMD620 handheld audio recorder (http://www.d-mpro.eu.com/index2.php?CID=3Pid=139action=detaillang=eng http://www.d-mpro.eu.com/index2.php?CID=3Pid=139action=detaillang=eng) I found out that the output level of the/my K3 (#1164) is not high enough to make a good recording, no matter I turn the CONFIG LINE OUT to 100%. I´ve used the same Marantz recorder many times, plugged in others receivers/transceivers, and most of the times I´ve to attenuate the input level to avoid overload and distortion. Is something wrong with my K3? Can the AF stage upgrade help me with that? According to the K3 project, what is the nominal line level output of the K3? Thanks in advance. André Santos, PT7AT ___ 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 - http://www.avg.com Version: 8.0.176 / Virus Database: 270.9.18/1848 - Release Date: 12/14/2008 12:28 PM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Strange problem when switching modes from VFO A to B
Jack, I don't know if it is relevant to your problem, but if you have ESSB mode set on, the transmit filter must be the 6 kHz filter instead of the 2.7 kHz. 73, Don W3FPR Jack Colson wrote: I have VFO A programmed for CW on each band, VFO B programmed for SSB (makes no difference which sideband ). Power up the K3 on VFO A then switch over to VFO B and the signal generated is extremely distorted and sounds like it is being transmitted via a very narrow filter. To correct this problem simply switch the mode from L or USB to CW and back again to L or USB. Audio is then restored to normal. I have the filters programmed correctly, the 2.7KHz filter is used for transmit. I am using the ESSB mode with a 4 KHz filter. This problem is independent of band. I mentioned this to Gary who passed it onto Lyle and who was unable to make it happen. I am using firmware 2.38 DSP 1.92. I am waiting for an update which will fix the turn on audio spike before updating. Any suggestions ? It is just a nuisance getting a report of who is that calling!!! 73, Jack, W3TMZ ___ 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 - http://www.avg.com Version: 8.0.176 / Virus Database: 270.9.18/1848 - Release Date: 12/14/2008 12:28 PM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Microphone Upgrade
David, You cannot use that microphone directly on the K3 because it requires phantom voltage (24 to 48 volts across the balanced lines). You can certainly use the microphone on a mixer (Behringer 802 for example) that does provide phantom voltage and feed the output of the mixer to the K3 (perhaps through an attenuator section unless you choose the K3 line-in). 73, Don W3FPR David Fleming wrote: I use a TLM-103 for audio recording. It's truly a wonderful mic for recording vocals and acoustic guitar. But dang, Man! Ain't that a bit overkill? ;) David, W4SMT --- On Sun, 12/14/08, -.-. --.-N3TU -.-. --.- connectme...@hotmail.com wrote: From: -.-. --.-N3TU -.-. --.- connectme...@hotmail.com Subject: [Elecraft] Microphone Upgrade To: elecraft@mailman.qth.net Date: Sunday, December 14, 2008, 9:23 PM Does anyone have a commercial mic on their K3? I was thinking of getting a Neumann TLM-103. Is it a lot of trouble to get this condenser mic working on the K3? I have the 6 khz filter for am/ssb and for ESSB, so far I found that it goes to 4 khz. Whats involved with this? ___ 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] Strange problem when switching modes from VFO A to B
Jack, You are correct. I have had the reports of pinched audio and just cycle to another band and back or switch sidebands and back and everything is OK. I have duplicated what you report: VFO A on CW and VFO B on SSB. Turn off K3 while on VFO A - CW. Turn it back on and immediately switch to VFO B - SSB and the audio is terrible. Cycle to other sideband and back and all is well again. This only happens to me on 40, 80, and 160 meters. Other bands are unaffected. Each time I have had a report of bad audio, it was on 40 meters. Rarely operate 80 or 160 meters. I am glad to find out how to get around this problem. I hope something can be done with programming to fix it, though. 73, Dick, W0NTA Jack Colson wrote: I have VFO A programmed for CW on each band, VFO B programmed for SSB (makes no difference which sideband ). Power up the K3 on VFO A then switch over to VFO B and the signal generated is extremely distorted and sounds like it is being transmitted via a very narrow filter. To correct this problem simply switch the mode from L or USB to CW and back again to L or USB. Audio is then restored to normal. I have the filters programmed correctly, the 2.7KHz filter is used for transmit. I am using the ESSB mode with a 4 KHz filter. This problem is independent of band. I mentioned this to Gary who passed it onto Lyle and who was unable to make it happen. I am using firmware 2.38 DSP 1.92. I am waiting for an update which will fix the turn on audio spike before updating. Any suggestions ? It is just a nuisance getting a report of who is that calling!!! 73, Jack, W3TMZ ___ 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://n2.nabble.com/Strange-problem-when-switching-modes-from-VFO-A-to-B-tp1656359p1656737.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] f/w 2.73/1.98 power calibration
With DataA you need to adjust the LineIn gain so that you have 4 bars of ALC action. 73 Greg On Dec 14, 2008, at 6:06 PM, Bob Cunnings wrote: Have you tried adjusting TXG VCE? With latest firmware, a setting of -2dB puts my PSK31 power right where it belongs for a given requested power out. There's then no need to ride the audio input level, which is a bad idea given the way the K3 ALC works. Bob NW8L On Sun, Dec 14, 2008 at 11:44 AM, Richard Ferch ve3...@storm.ca wrote: Steve Ward said: I just applied the latest beta firmware as I have done many times before, and it looks like this time my power calibration went out the window. I'm putting out about 70w on PSK31 when I dialed in 45. Just wanted to give folks a heads-up to watch their power output when they start operating under new firmware, it might be time to re- calibrate! It's more than just the power calibration. Even after calibrating power and setting the requested power below 50W, with either 2.73/1.98 or 2.72/1.98 the power output on PSK31 (in DATA A) mode often exceeds the requested power, which results in splatter. I have been having to constantly ride the LINE IN and/or sound card output level controls in this weekend's PSK contest to keep the power below 50W and PSK signal quality acceptable; I have now switched back to 2.67/1.96 for the remainder of the contest. 73, Rich VE3KI K3 #1595 ___ 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
[Elecraft] Elecraft CW Net Report for December 15th, 2008
Good Evening, Neither band was very happy tonight. The first net gathered three check ins from Indiana, Oregon, and Minnesota. The second net got two from Florida and California. Forty meters had some ESP stations but I never got more than a couple letters and then they would change the next time I tried. I did hear some tuners so there was some activity but not on ECN. On to the lists = On 14050 kHz at z: AB9V - Mike - IN - K3 - 398 NS7P - Phil - OR - K3 - 1826 N0AR - Scott - MN - K2 - 4866 On 7045 kHz at 0300z: W6ZH - Pete - CA - K3 - 657* QNI #150 * W3TMZ - Jack - FL - K3 - 1169QNI #20!! Hopefully the future will be brighter. But, the weather has turned out OK. It is cold, there is snow on the ground, but the water is still running, the power is still on, and the high winds forecast have disappeared. So, all in all, it is OK. I am glad I brought in all that extra wood in preparation for this storm. It is warm in here and there is plenty of dry wood to keep it that way. The 4WD folks are enjoying the winter wonderland driving by on the hour. Now that all the logging gates are open for hunting they get to go way back in the woods to try and get stuck. They also provide me with a path out to the main road since it will not get plowed for a week or two. Next week I expect the bands to be better; they cannot go far in the other direction! Supposedly there is activity on the far side of the sun. It may rotate into view during the week so we can gain some ionic input to the Heaviside layer. Speaking of Oliver I was looking at the original Maxwell equations and find he and a friend simplified the system. Yes, they do predict what we have come to enjoy but they also eliminated one quantity: magnetic potential. I wonder what else the Maxwell equations could tell us if that simplification had not glossed over magnetic potential. Are there some other interesting gadgets in those quaternion systems? Until next week stay warm and stay well, 73, Kevin. KD5ONS (Net Control Operator 5th Class) - ___ 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] Microphone Upgrade
On Sun, 14 Dec 2008 18:23:39 -0800 (PST), -.-. --.-N3TU -.-. --.- wrote: Does anyone have a commercial mic on their K3? I was thinking of getting a Neumann TLM-103. Is it a lot of trouble to get this condenser mic working on Yes, it is a LOT of trouble, and a complete waste of money for ham radio. First you need balanced phantom power, then a real mic transformer to connect it to the K3. There's no good reason for using a mic like this in ham radio. I'm using an EV RE16. It is ideally suited to ham radio, rejects noise in the shack, no proximity effect, no breath pops, etc. It works very well with every ham rig I've tried it with, including the K3. See http://HamInterfacing.pdf for details and a list of other great pro mics to use in your ham shack that cost a LOT less. BTW -- I own a lot of pro mics, including a pair of TLM170s. They're great for recording acoustic music, which is what I use them for. I wouldn't dream of using them in my ham shack. 73, Jim Brown K9YC ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Fwd: [Elecraft] Strange problem when switching modes from VFO A to B
Wayne is working on this bug and it should be fixed in the next release. Thanks! 73 Greg Begin forwarded message: From: Gregory Fischer a...@cablespeed.com Date: December 14, 2008 8:22:06 PM PST To: Dick Housden, W0NTA w0...@arrl.net Subject: Re: [Elecraft] Strange problem when switching modes from VFO A to B Dick, I was able to duplicate your report. I sent a note to Wayne and I am sure it will be corrected. Thanks for the info! 73 Greg AB7R On Dec 14, 2008, at 8:06 PM, Dick Housden, W0NTA wrote: Jack, You are correct. I have had the reports of pinched audio and just cycle to another band and back or switch sidebands and back and everything is OK. I have duplicated what you report: VFO A on CW and VFO B on SSB. Turn off K3 while on VFO A - CW. Turn it back on and immediately switch to VFO B - SSB and the audio is terrible. Cycle to other sideband and back and all is well again. This only happens to me on 40, 80, and 160 meters. Other bands are unaffected. Each time I have had a report of bad audio, it was on 40 meters. Rarely operate 80 or 160 meters. I am glad to find out how to get around this problem. I hope something can be done with programming to fix it, though. 73, Dick, W0NTA Jack Colson wrote: I have VFO A programmed for CW on each band, VFO B programmed for SSB (makes no difference which sideband ). Power up the K3 on VFO A then switch over to VFO B and the signal generated is extremely distorted and sounds like it is being transmitted via a very narrow filter. To correct this problem simply switch the mode from L or USB to CW and back again to L or USB. Audio is then restored to normal. I have the filters programmed correctly, the 2.7KHz filter is used for transmit. I am using the ESSB mode with a 4 KHz filter. This problem is independent of band. I mentioned this to Gary who passed it onto Lyle and who was unable to make it happen. I am using firmware 2.38 DSP 1.92. I am waiting for an update which will fix the turn on audio spike before updating. Any suggestions ? It is just a nuisance getting a report of who is that calling!!! 73, Jack, W3TMZ ___ 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://n2.nabble.com/Strange-problem-when-switching-modes-from-VFO-A-to-B-tp1656359p1656737.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
