[Elecraft] Fw: Cooler KX Plus Heatsink Install
From: Jim Leder Sent: Monday, May 25, 2015 2:00 PM To: km...@km6cq.com ; Elecraft Subject: [Elecraft] Cooler KX Plus Heatsink Install I had the exact same experience with the longer screw being slightly off center. And, since I did not do the build on mine, I was unaware of the sticky tape holding the old heat sink to the case. Finally figured it out after reviewing the build directions, and then pushed on one end, fairly hard, till it popped off. Sailed half way across the room! But, all was fine and I completed the heat sink replacement. Fred later advised to use a heat gun, or hair dryer on the outside of the old heat sink to soften the sticky tape so that it would come off easier. Very satisfied with the VE7FMN heat sink and Fred's support and advice! Very nice upgrade! Jim Bob Buckeye AKA Jim Leder K8CXM since 1961 IBM retiree since 1999 There are 10 types of people in this world -- those who understand binary and those who don't. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K3: LP-Pan 2 and the Blob
Today I set about to get my new sound card/K3/LP-Pan 2/NAp3/new shack computer working in harmony. Alas, it was not to be. I've got the levels set correctly (thanks to Larry) and signals are apparent on the band. What is perplexing is what I have named The Blob (see attached screen shot). It is: on all bands; moves in Free Mode NaP3) and is centered around VFO A marker with about 1/3 of the Blob lower in frequency and 2/3 higher than VFO A. It makes me wonder if there is something in the IF signal from the K3 to LP-Pan. The S-meter on the K3 says it is S3-4 in the Blob. I've searched for a setting in the K3 that I've overlooked but nothing. It is so strange to see a symmetrical shape to the Blog--like it is being shaped by a filter. If this is true picture of the spectrum at my QTH, then I've got huge problems outside. The sound card is a U5 set to 192 Khz. Computer is a W7 64-bit. Turning the LP-Pan attenuator ON does reduce the amplitude but but does not eliminate the Blob. I had just completed a noise audit of the QTH and found some switching power supplies that have been fixed with cores. This picture, however, is much worse than previously so something has changed. Just want to rule out a K3/LP-Pan 2 problem. I'm going to cross post this on the Elecraft and LP-Pan reflectors. Any thoughts and suggestions would be greatly appreciated. Clark/WU4B -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-LP-Pan-2-and-the-Blob-tp7603501.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K2/100 twins configuration
There is a cable from KPA100 called KPA100-J4 that normally connects to the K2's P3 connector halfway along the right edge of the K2's RF board (when looking from the front of the radio. In a twins configuration, my guess is that this cable would not be connected, in which case you would need to power the K2 via the 2.1mm coaxial power socket on the back of the K2. Maybe someone with a twins setup can comment on this. 73, Matt VK2RQ _ From: Brian Denley b.den...@comcast.net Sent: mardo, majo 26, 2015 4:15 atm Subject: [Elecraft] K2/100 twins configuration To: Elecraft Reflector elecraft@mailman.qth.net, d...@w3fpr.com How does the K2 get it's power when only the high current supply is connected? I ask because sometimes my K2 doesn't - unless I connect a supply to the K2 directly. Is it through the KIO2? I also notice that when the power is lower the 11 watts, the SWR lights on my KAT100 do not light - but they do light when the power is 11 watts or higher. In both cases I can hear the KAT109 relays cranking away. Thanks Brian KB1VBF Sent from my iPad __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to matt.vk...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K2/100 twins configuration
How does the K2 get it's power when only the high current supply is connected? I ask because sometimes my K2 doesn't - unless I connect a supply to the K2 directly. Is it through the KIO2? I also notice that when the power is lower the 11 watts, the SWR lights on my KAT100 do not light - but they do light when the power is 11 watts or higher. In both cases I can hear the KAT109 relays cranking away. Thanks Brian KB1VBF Sent from my iPad __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Blown finals
Folks, I have a K2 that's a couple years old. A friend and I were working with it a couple weeks ago and switched an antenna connection -- the K2 went blank. After a bit of trancing it was apparent that one of the finals went. It was not in transmit. Pulling the bad final resulted in the K2 coming back to life. We ordered the final replacement kit and my friend installed the kit -- triple checked his installation and wrote: Got everything back together, checked to make sure the cathodes weren't shorted to ground. Attached the heat sink. Double checked topside to see if the cathodes were shorted. Triple checked. Attached the top cover. Set PS voltage limit to 10v and current limit to 1 amp. Dummy load. Punched the on button and voltage immediately dropped below 1 volt. No smoke, no noise. Cathodes are shorted to ground. I assume the finals are blown. I'll get another final kit on its way -- but need to find the issue before installing. What is the best approach? I haven't written Elecraft, yet. 73, Jack (W0FNQ)Folks, -- View this message in context: http://elecraft.365791.n2.nabble.com/Blown-finals-tp7603503.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3: LP-Pan 2 and the Blob
Clark, set the audio driver to ASIO. Tony KT0NY On May 25, 2015 3:54 PM, engineercm clark.macau...@gmail.com wrote: Today I set about to get my new sound card/K3/LP-Pan 2/NAp3/new shack computer working in harmony. Alas, it was not to be. I've got the levels set correctly (thanks to Larry) and signals are apparent on the band. What is perplexing is what I have named The Blob (see attached screen shot). It is: on all bands; moves in Free Mode NaP3) and is centered around VFO A marker with about 1/3 of the Blob lower in frequency and 2/3 higher than VFO A. It makes me wonder if there is something in the IF signal from the K3 to LP-Pan. The S-meter on the K3 says it is S3-4 in the Blob. I've searched for a setting in the K3 that I've overlooked but nothing. It is so strange to see a symmetrical shape to the Blog--like it is being shaped by a filter. If this is true picture of the spectrum at my QTH, then I've got huge problems outside. The sound card is a U5 set to 192 Khz. Computer is a W7 64-bit. Turning the LP-Pan attenuator ON does reduce the amplitude but but does not eliminate the Blob. I had just completed a noise audit of the QTH and found some switching power supplies that have been fixed with cores. This picture, however, is much worse than previously so something has changed. Just want to rule out a K3/LP-Pan 2 problem. I'm going to cross post this on the Elecraft and LP-Pan reflectors. Any thoughts and suggestions would be greatly appreciated. Clark/WU4B -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-LP-Pan-2-and-the-Blob-tp7603501.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to estept...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K3, diversity and noise reduction
I have been watching some youtube clips showing how by adjusting the phase and amplitude of two received signals on a diversity receiver local noise can be reduced by more than 20db. This would be particularly useful to me as I have the dirtiest plasma TV on one side of me and a gaggle of cheap ADSL routers on the other. When pointed at them with my yagi the noise floor on 20-15m is over S7. The equipment used in the clip was the ANAN 100D SDR. Is anyone aware if this technique is possible using the K3 dual receivers? I have not found any place in the manual where it is possible to alter the phase of the secondary or primary signals. Thanks for reading this Tony VK4CH __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 RemoteRig
For those of you running a K3 + RemoteRig station with multiple users, this may be of interest. Although we could not get the K3 Utility to communicate with the tower site K3 using RemoteRig's spare COM port, another list member suggested Win4K3 Suite software. I can report that the software does pass the COM data through RemoteRig to the K3. For remote site operations with multiple users, this means each op can now save and recall their favorite user settings in a personal profile. With Win4K3, all K3 settings are polled and saved in about ten seconds at the standard 38.4Kbps transfer speed. Paul, W9AC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Blown finals
Check the bias voltage. If it's too high, it can blow the finals. Sometimes the circuit that provides the bias can have a shorted transistor and drive too much current into the base of the final transistors. Jack WA9FVF Willco Electronics - Jack WA9FVP Sent from my TRS-80 :-) -- View this message in context: http://elecraft.365791.n2.nabble.com/Blown-finals-tp7603503p7603507.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
