Re: [Elecraft] Software for KX3
As was mentioned, the software you want to use depends on what your plans are. I've used Ham Radio Deluxe, and the DX Suite's Commander with the KX3 with no problems. I've also used some of the digital mode software that interfaces with both, WSJT-X for instance, and it works flawlessly. What I like about the digital modes with the KX3, is all you really need is the connections from the KX3 to the computer, although I use an external USB sound card as it has a better audio frequency range, as well as providing feedback loop isolation. Neil, KB3TVU __ 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] Software for KX3
I would like to know a Contest/DXPedition software. I tried to use N1MM with some macros but I couldn't figure it out how to make KX3 transmit the /. During my stay in Curacao I had to use the keyer because of that. :) For me, this was the only thing that bothered me, sometimes the KX3 keyer too, but if I had the computer to TX, this would not be so bad. :) Does anybody knows if it is possible to fix that? 73 Alex On Wed, Jan 28, 2015 at 3:27 PM, Neil Zampella ne...@techie.com wrote: As was mentioned, the software you want to use depends on what your plans are. I've used Ham Radio Deluxe, and the DX Suite's Commander with the KX3 with no problems. I've also used some of the digital mode software that interfaces with both, WSJT-X for instance, and it works flawlessly. What I like about the digital modes with the KX3, is all you really need is the connections from the KX3 to the computer, although I use an external USB sound card as it has a better audio frequency range, as well as providing feedback loop isolation. Neil, KB3TVU __ 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 py2...@gmail.com -- Vy 73 Alex PY2SEX | PY1KS | DL1NX __ 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] P3 NB general question
I tried out the P3 NB feature during the 160 meter contest and maybe what I tested it on was not impulse noise. I had a general noise level at S3 with periodic 1 or 2 second bursts to S4 or S5 covering the entire band. The NB feature did not eliminate these short duration noise bursts. I tried NB levels from 5 to 10. Is this type of noise not the type that can be cleaned up with the P3 NB feature? 73, Mike K2MK -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-NB-general-question-tp7597623.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] Elecraft Digest, Vol 129, Issue 36
Ask, and you shall receive ... well ... most times you'll receive. I love this company ... :) Neil, KB3TVU On 01/27/15 06:31 pm, elecraft-requ...@mailman.qth.net wrote: Subject: Re: [Elecraft] Panadapter From: Wayne Burdick n...@elecraft.com Date: 01/27/15 01:46 pm To: Phil Hystad phys...@mac.com CC: elecraft@mailman.qth.net elecraft@mailman.qth.net Fixed Tune mode for the PX3 is nearly finished. I'll post details when we're ready to do field testing. 73, Wayne N6KR http://www.elecraft.com On Jan 27, 2015, at 10:33 AM, Phil Hystadphys...@mac.com wrote: Jim (and others)... So, is this limitation of the PX3 going to be fixed to support the fixed tune mode. Fixed tune is about the only way I use my P3. Although I need to periodically re-center the cursor on the P3, that is not a problem. I will not be buying the PX3 (probably) until this is fixed -- does anyone know if it will be fixed? 73, phil, K7PEH On Jan 27, 2015, at 10:04 AM, Jim Brownj...@audiosystemsgroup.com wrote: On Tue,1/27/2015 8:15 AM, Phil Wheeler wrote: The only negative on the PX3 for me is the absence of the mode where the band stays fixed on the display while your cursor moves across it as you change frequency. Once (or if!) that is added to my PX3 it will be well-nigh perfect. This is a BIG negative for me. The current firmware lacks the Fixed Tune Mode, which GREATLY reduces its usefulness. To see weak signals, we must use lots of averaging and keep the noise near the bottom of the amplitude display. But without Fixed Tune Mode, averaging re-starts with each QSY, so you can't see those weak signals as you tune the band. I've heard that they're working on some limited version of Fixed Tune Mode. If it doesn't show up pretty soon, and if it isn't reasonably useful, my PX3 will be for sale. Caps added for emphasis. 73, Jim K9YC __ 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 tophys...@mac.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 ton...@elecraft.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 Sub Receiver and protecting the Sub RX input
Doug, Not necessarily - the K3 RX antenna input can be exposed to RF from the TX antenna whether that is the K3 transmitting or another transmitter. In the case of another transmitter, one can add the exposure to the K3 normal ANT1 or ANT2 input if an antenna is connected. 73, Don W3FPR On 1/28/2015 7:45 AM, Doug Turnbull wrote: Lyle and company, To be clear are you talking about using another transmitter other than the K3's transmitter and external amplifier? This is my reading and I am just checking. Thank you. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Sub Receiver and protecting the Sub RX input
Lyle and company, To be clear are you talking about using another transmitter other than the K3's transmitter and external amplifier? This is my reading and I am just checking. Thank you. 73 Doug EI2CN -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Lyle Johnson Sent: 27 January 2015 23:45 To: Elecraft Reflector Subject: Re: [Elecraft] K3 Sub Receiver and protecting the Sub RX input In general, ensure the coupled energy into the receiver antenna connector is less than 1 watt under absolute worst case conditions, and preferably under 100 mW, and your receiver should be OK. Put another way, the antennas should be separated by 40 dB if running up to 1 kW, 30 dB if running up to 100W and 20 dB if running up to 10W. You might get away with 10 dB less coupling. If you can't get this level of isolation by physical separation and/or orientation of the antennas, provide some external means of reducing the signal to the receiver input. Yes, the K3 inputs are tested to higher levels than this, but why stress the radio and risk damage to or degradation of the receiver(s)? If you hear the receiver COR relay click when using the other transmitter, reduce the coupling between the antennas or otherwise prevent the excess energy from reaching the receiver input. 73, Lyle KK7P ...can you please elaborate on what is sufficient antenna separation when a transmitter is operating on another antenna? __ 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 turnb...@net1.ie __ 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] Software for KX3
Alex, There is a way to do it, I don't; As I recall it was too much trouble. I use a WinKeyer USB with N1MM when I contest. I have zero problems this way. I know it's another piece of gear, but the ease is great and I can stop sending by just touching my key or add information. 73, Barry K3NDM On 1/28/2015 9:34 AM, PY2SEX - Alex wrote: I would like to know a Contest/DXPedition software. I tried to use N1MM with some macros but I couldn't figure it out how to make KX3 transmit the /. During my stay in Curacao I had to use the keyer because of that. :) For me, this was the only thing that bothered me, sometimes the KX3 keyer too, but if I had the computer to TX, this would not be so bad. :) Does anybody knows if it is possible to fix that? 73 Alex On Wed, Jan 28, 2015 at 3:27 PM, Neil Zampella ne...@techie.com wrote: As was mentioned, the software you want to use depends on what your plans are. I've used Ham Radio Deluxe, and the DX Suite's Commander with the KX3 with no problems. I've also used some of the digital mode software that interfaces with both, WSJT-X for instance, and it works flawlessly. What I like about the digital modes with the KX3, is all you really need is the connections from the KX3 to the computer, although I use an external USB sound card as it has a better audio frequency range, as well as providing feedback loop isolation. Neil, KB3TVU __ 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 py2...@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
Re: [Elecraft] Software for KX3
That looks nice.. I used the N1MM plus, but I don't remember which version it was. I can say that I have updated before leave on 22.11.2014. I will try that on my next portable activation. Thanks for the good news. 73 Alex On Wed, Jan 28, 2015 at 3:58 PM, Richard Ferch ve3...@storm.ca wrote: Alex, What version of N1MM Logger were you using? If you were using N1MM Classic or an N1MM Plus version older than 1.0.4429, those versions use / as a separator between commands. Starting with Plus version 1.0.4429, the command separator has been changed to \, and it is now possible to send a / character within a KY command text string. 73, Rich VE3KI PY2SEX wrote: I tried to use N1MM with some macros but I couldn't figure it out how to make KX3 transmit the /. __ 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 py2...@gmail.com -- Vy 73 Alex PY2SEX | PY1KS | DL1NX __ 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 Sub Receiver and protecting the Sub RX input
If the 2nd rx pre-amp can add sufficient gain, then a resistive divider on that input will add a good degree of protection. Receive-only aerials often have their own pre-amps, so there might be plenty of gain in hand. Coax to the 2nd rx should still be protected against common mode current. David G3UNA On Jan 28, 2015, at 7:45 AM, Doug Turnbull turnb...@net1.ie wrote: Lyle and company, To be clear are you talking about using another transmitter other than the K3's transmitter and external amplifier? This is my reading and I am just checking. Thank you. Both. I believe the OP asked about the sub RX and the K3 transmitter I broadened the question because I blew out the front end on the K3 while testing another transmitter. Either situation speaks to how much the K3 receiver can take from external RF. But some solutions such as putting protective devices in front of the K3 sub receiver will not work of course when the situation involves the K3 main receiver and an external transmitter. Ken WA8JXM __ 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] IF out of 2nd Receiver in K3?
That would be nice You could run two P3s From: Doug Ellmore d...@ellmore.net To: elecraft@mailman.qth.net Sent: Wednesday, January 28, 2015 1:39 PM Subject: [Elecraft] IF out of 2nd Receiver in K3? Is there a way to get the IF out of the optional 2nd receiver of a K3? In addition to looking at two different bands in HF, I am thinking it would be great to be able to look at both 6m and 2m for field day with one K3. Doug NA1DX na...@arrl.net www.ellmore.net/na1dx __ 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 hlyin...@yahoo.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 Sub Receiver and protecting the Sub RX input
Semi-related topic: Recently, I was hosting a local 2m-SSB net and had my KX3-2M connected to a 7-element yagi pointed 90-degrees from the transmitting antenna array (K3+xvtr+150w amp). Spacing is about 40-feet horizontally and 30-feet vertically (Tx ant higher). Its normal to run the Preamp with the KX3 on 2m and when I transmitted the signal was strong enough to trigger overload protection in the KX3 which disables the preamp. Probably 25-dB front-back ratio on the transmitting antenna and maybe 15-dB rejection off the side of the Rx antenna (both yagis) so estimated power at the KX3 is +52-dBm - 40dB = +12 dBm (not including space loss between antennas). +12 dBm into the KX3-2M is pretty marginal for safety of the preamp. Probably actual level is closer to 0 dBm (because I didn't include coax loss or space loss). -33 dBm signal from my XG3 will drive the KX3 to S9+40 (-73 dBm=S9*). *with preamp=ON. Since antennas are within near-fields, ordinary space loss formula do not apply. That is the typical situation with the KRX3 used on HF. 1-watt is way too high for safety for my eme preamps. +5 dBm is my maximum tolerance. +15 dBm is certainty of blow out. (I disconnect other antennas when running 1300w on the main array) 73, Ed - KL7UW http://www.kl7uw.com Kits made by KL7UW Dubus Mag business: dubus...@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
Re: [Elecraft] KX3: Hi SWR on 20m 30m after KX3-2M install
Brian, Can’t help wondering if ESD or similar build-up occurred with low humidity in the winter. Frank KG9H On Jan 28, 2015, at 3:26 PM, Brian Waterworth brian.waterwo...@gmail.com wrote: I had a similar situation with my KX3 just after the RTTY round-up at the beginning of January. I also have the 2M module installed and experienced the same challenges with the inductors. SWR values after 2M module install seemed to be ok on HF. I actually can't recall if they were high as I didn't check. But, the auto-tuner had no trouble achieving less than 1.5:1 matches with a regular ATU cycle (not the aggressive cycle) into my G5RV shorty. After the round-up, I couldn't achieve less than 3 on most bands (ATU assisted) and in some cases an SWR of 75:1!! I tried measurements into two different dummy loads that I had around the shack. I bypassed the ATU and measured on all bands. I had high SWR on all HF bands into both dummy loads. The sad ending to my tail is that I had to send the KX3 back to Elecraft for warranty repair. The report back, from the Elecraft tech looking at my rig, was that 5 of the RF board's ICs were blown. Probable cause: near field lightning strike or greater than 100+ watts of RF energy into the KX3. It is winter where I am (snow, cold :-) and we don't get lightning at this time of year. Also, I don't know how 100+ watts would have slipped into the KX3. It isn't near any other RF source with that kind of power. It is interesting, Ed, that you are reporting something similar to my situation. I hope you resolve your problem without having to send your KX3 back. P.S. I struck up a nice email conversation with the folks at Elecraft support and they guided me through some tests and asked for measurements. They too didn't want me to have to send the rig back. But, the results of the SWR measurements told them that something bad was wrong and the KX3 needed servicing. regards, Brian VE3IBW On Wed, Jan 28, 2015 at 1:59 PM, Ed Hamlin w...@earthlink.net wrote: Hi I just recently installed the 2M transverter in my KX-3. I’m now noticing high (11 to 25) SWR readings on 20m and I wondered if this might be related (I don’t recall such high readings before). I’m using an off-center fed dipole that has worked quite well in the past. The KX3 autotuner worked so well in the past, and I’ve seen it tune on relatively short random wires, so inability to tune on a good antenna seems rather odd. Part of the installation required displacing L40 and L43 on the main RF board to make room for the SMA connector. It’s possible to break one of the leads on the inductor while doing this. L40 (as I recall) felt pretty tight and I may have inadvertently pushed it too hard. What would be the symptoms of an open circuit on either of those inductors? Other than high SWR on 20m and 30m, I haven’t seen any anomalous behavior. 73s Ed __ 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 brian.waterwo...@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 kg9hfr...@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
Re: [Elecraft] K2 10Watt RF SSB TX distortion
Paul, R59 should be 4.7k, and the increase in bias voltage is not a good thing. It may be that the PA transistors have some current leakage from collector to base that is upsetting the bias. I would not even operate it in CW mode with that increased bias voltage. I would suggest first replacing R59 and while you are in that vicinity, arbitrarily replace Q11 and Q13 (2NAs). Then check the bias during transmit. It should be between 0.62 and 0.64 volts. If it is not, order the K2PAKIT and replace the PA transistors. The Elecraft PA kit contains matched transistors - do not substitute - 2SC1969 transistors used to be consistent and did not have to be matched, but that is not true for those available today. 73, Don W3FPR On 1/28/2015 5:56 PM, paulb wrote: Hi Folks Getting a few reports of slightly ragged SSB audio TX. check here definitely NQR ( not quite right ) Used another receiver to chase the signal path from the SSB board to the power stages. Distortion is in finals. They appear to be on the very edge of class B. Deceased resistor value R59 to increase bias current. My K2 meter may not be accurate; previous value TX showing 0.64A , moved to 0.78A. Received audio is now very clean. R59 value approx 1K. No apparent increase in temps with casual use. serial 6534 built several years ago. __ 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] IF out of 2nd Receiver in K3?
See PVRC (Potomac Valley Radio Club) Newsletter June 2012. Regards, Mike VP8NO On 28/01/2015 18:20, Harry Yingst via Elecraft wrote: That would be nice You could run two P3s From: Doug Ellmore d...@ellmore.net To: elecraft@mailman.qth.net Sent: Wednesday, January 28, 2015 1:39 PM Subject: [Elecraft] IF out of 2nd Receiver in K3? Is there a way to get the IF out of the optional 2nd receiver of a K3? In addition to looking at two different bands in HF, I am thinking it would be great to be able to look at both 6m and 2m for field day with one K3. Doug NA1DX na...@arrl.net www.ellmore.net/na1dx __ 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] Value of a used KPA100
I have a friend who is working on an estate sale here in Canada. He is attempting to price out a used, excellent condition, KPA100 without the tuner. For those that have bought a used in recent history, how much did you pay for it. Or, if you recently sold one, what did you sell it for. You can send it any info to me personally if you like to keep the noise down on the reflector. Thanks, Mike va3mw __ 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] KX3: Hi SWR on 20m 30m after KX3-2M install
I had a similar situation with my KX3 just after the RTTY round-up at the beginning of January. I also have the 2M module installed and experienced the same challenges with the inductors. SWR values after 2M module install seemed to be ok on HF. I actually can't recall if they were high as I didn't check. But, the auto-tuner had no trouble achieving less than 1.5:1 matches with a regular ATU cycle (not the aggressive cycle) into my G5RV shorty. After the round-up, I couldn't achieve less than 3 on most bands (ATU assisted) and in some cases an SWR of 75:1!! I tried measurements into two different dummy loads that I had around the shack. I bypassed the ATU and measured on all bands. I had high SWR on all HF bands into both dummy loads. The sad ending to my tail is that I had to send the KX3 back to Elecraft for warranty repair. The report back, from the Elecraft tech looking at my rig, was that 5 of the RF board's ICs were blown. Probable cause: near field lightning strike or greater than 100+ watts of RF energy into the KX3. It is winter where I am (snow, cold :-) and we don't get lightning at this time of year. Also, I don't know how 100+ watts would have slipped into the KX3. It isn't near any other RF source with that kind of power. It is interesting, Ed, that you are reporting something similar to my situation. I hope you resolve your problem without having to send your KX3 back. P.S. I struck up a nice email conversation with the folks at Elecraft support and they guided me through some tests and asked for measurements. They too didn't want me to have to send the rig back. But, the results of the SWR measurements told them that something bad was wrong and the KX3 needed servicing. regards, Brian VE3IBW On Wed, Jan 28, 2015 at 1:59 PM, Ed Hamlin w...@earthlink.net wrote: Hi I just recently installed the 2M transverter in my KX-3. I’m now noticing high (11 to 25) SWR readings on 20m and I wondered if this might be related (I don’t recall such high readings before). I’m using an off-center fed dipole that has worked quite well in the past. The KX3 autotuner worked so well in the past, and I’ve seen it tune on relatively short random wires, so inability to tune on a good antenna seems rather odd. Part of the installation required displacing L40 and L43 on the main RF board to make room for the SMA connector. It’s possible to break one of the leads on the inductor while doing this. L40 (as I recall) felt pretty tight and I may have inadvertently pushed it too hard. What would be the symptoms of an open circuit on either of those inductors? Other than high SWR on 20m and 30m, I haven’t seen any anomalous behavior. 73s Ed __ 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 brian.waterwo...@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
Re: [Elecraft] IF out of 2nd Receiver in K3?
There is no official Elecraft modification to access the sub-receiver IF output, but they do have some information on the web site about others have done it: http://www.elecraft.com/K3/K3FAQ.htm#sub%20rx%20if Alan N1AL On 01/28/2015 10:39 AM, Doug Ellmore wrote: Is there a way to get the IF out of the optional 2nd receiver of a K3? In addition to looking at two different bands in HF, I am thinking it would be great to be able to look at both 6m and 2m for field day with one K3. __ 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] SPEAKER FOR K3
What seems to be the best speaker for the k3? I'm using a A-COM and I am just not happy with the way it sounds.. I know the RX EQ can change the sound! I know I will get all different answers, but at least I can see what everyone may or may not be using. 73s Bob W5RG __ 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] SPEAKER FOR K3
Bob, I would suggest that you get 2 speakers for the K3 so you can enjoy the AFX effects if you do not have the KRX3 installed, or with the KRX3 you can hear the main RX in one speaker and the KRX3 in the other. I use 2 small non-amplified speakers with my K3. They are the old Radio Shack Optimus speakers that I was able to pick up in a used stuff store for a bargain price, but any pair of good fidelity speakers will do the job nicely. I would suggest that you look for full fidelity speakers and use the RX EQ to tailor the response to your preferences. If you are looking at amplified speakers, computer speakers may be OK, but many of them suffer from RF exposure and will make nasty noises when you transmit. For my KX3, I opted for the West Mountain Radio Comspkr and have had no RF problems with them. 73, Don W3FPR On 1/28/2015 7:16 PM, Bob Gibson via Elecraft wrote: What seems to be the best speaker for the k3? I'm using a A-COM and I am just not happy with the way it sounds.. I know the RX EQ can change the sound! I know I will get all different answers, but at least I can see what everyone may or may not be using. 73s Bob W5RG __ 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] SPEAKER FOR K3
I use two sets of West Mountain Radio units ... one on my K3 and the other on my KX3. 73! Ken - K0PP On Jan 28, 2015 5:19 PM, Bob Gibson via Elecraft elecraft@mailman.qth.net wrote: What seems to be the best speaker for the k3? I'm using a A-COM and I am just not happy with the way it sounds.. I know the RX EQ can change the sound! I know I will get all different answers, but at least I can see what everyone may or may not be using. 73s Bob W5RG __ 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 kengk...@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
Re: [Elecraft] SPEAKER FOR K3
I picked up a pair of these - very happy with them: http://www.monoprice.com/Product/?c_id=115cp_id=11504cs_id=1150402p_id=605300seq=1format=1#largeimage http://www.monoprice.com/Product/?c_id=115cp_id=11504cs_id=1150402p_id=605300seq=1format=1#largeimage -Greg NY6C On Jan 28, 2015, at 5:16 PM, Bob Gibson via Elecraft elecraft@mailman.qth.net wrote: What seems to be the best speaker for the k3? I'm using a A-COM and I am just not happy with the way it sounds.. I know the RX EQ can change the sound! I know I will get all different answers, but at least I can see what everyone may or may not be using. 73s Bob W5RG __ 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 gmil...@sonic.net __ 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] IF out of 2nd Receiver in K3?
As best I remember, though, the P3 talks only to the main receiver ... right? I believe that anyone wanting to display the sub-receiver would have to use a different panadapter scheme if they want handshaking capability such as frequency information, point/click QSY, etc. The N2QT modification described in the June 12 PVRC newsletter (easily found via Google search) describes how to do this in better detail than the reference below. Dave AB7E On 1/28/2015 4:43 PM, Alan wrote: There is no official Elecraft modification to access the sub-receiver IF output, but they do have some information on the web site about others have done it: http://www.elecraft.com/K3/K3FAQ.htm#sub%20rx%20if Alan N1AL On 01/28/2015 10:39 AM, Doug Ellmore wrote: Is there a way to get the IF out of the optional 2nd receiver of a K3? In addition to looking at two different bands in HF, I am thinking it would be great to be able to look at both 6m and 2m for field day with one K3. __ 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 xda...@cis-broadband.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] SPEAKER FOR K3
I use a pair of Insignia 4 3-way speakers from BestBuy that I seem to remember Eric suggested a long time ago. You'll have to search the archives. Been happy with them so far and no problems with RFI even when using the KPA500. Mike AC6JA In a message dated 1/28/2015 4:47:17 P.M. Pacific Standard Time, kengk...@gmail.com writes: I use two sets of West Mountain Radio units ... one on my K3 and the other on my KX3. 73! Ken - K0PP On Jan 28, 2015 5:19 PM, Bob Gibson via Elecraft elecraft@mailman.qth.net wrote: What seems to be the best speaker for the k3? I'm using a A-COM and I am just not happy with the way it sounds.. I know the RX EQ can change the sound! I know I will get all different answers, but at least I can see what everyone may or may not be using. 73s Bob W5RG __ 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 kengk...@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 ac...@aol.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] Software for KX3
Alex, What version of N1MM Logger were you using? If you were using N1MM Classic or an N1MM Plus version older than 1.0.4429, those versions use / as a separator between commands. Starting with Plus version 1.0.4429, the command separator has been changed to \, and it is now possible to send a / character within a KY command text string. 73, Rich VE3KI PY2SEX wrote: I tried to use N1MM with some macros but I couldn't figure it out how to make KX3 transmit the /. __ 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 Sub Receiver and protecting the Sub RX input
On Jan 28, 2015, at 7:45 AM, Doug Turnbull turnb...@net1.ie wrote: Lyle and company, To be clear are you talking about using another transmitter other than the K3's transmitter and external amplifier? This is my reading and I am just checking. Thank you. Both. I believe the OP asked about the sub RX and the K3 transmitter I broadened the question because I blew out the front end on the K3 while testing another transmitter. Either situation speaks to how much the K3 receiver can take from external RF. But some solutions such as putting protective devices in front of the K3 sub receiver will not work of course when the situation involves the K3 main receiver and an external transmitter. Ken WA8JXM __ 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 Sub Receiver and protecting the Sub RX input
Don, Thank you. There is no problem so far but I will place an order with Array Solutions for a bit of additional protection. The forum is useful! Thanks to all for bringing this issue up. 73 Doug EI2CN -Original Message- From: Don Wilhelm [mailto:w3...@embarqmail.com] Sent: 28 January 2015 13:41 To: Doug Turnbull; 'Lyle Johnson'; 'Elecraft Reflector' Subject: Re: [Elecraft] K3 Sub Receiver and protecting the Sub RX input Doug, Not necessarily - the K3 RX antenna input can be exposed to RF from the TX antenna whether that is the K3 transmitting or another transmitter. In the case of another transmitter, one can add the exposure to the K3 normal ANT1 or ANT2 input if an antenna is connected. 73, Don W3FPR On 1/28/2015 7:45 AM, Doug Turnbull wrote: Lyle and company, To be clear are you talking about using another transmitter other than the K3's transmitter and external amplifier? This is my reading and I am just checking. Thank you. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Sub Receiver and protecting the Sub RX input
Folks, Have we lost track of our senses? (I never vent so please allow me to do so..) I like to “trade a lot and see many radios that have a blown out front end, which usually I can fix. Most times the victim radio was “on receive” with a shiny new transmitter that was “just being set in place” into the operator position. Usually the old radio is on an antenna that was in very close proximity to the new one. Professionally I do EMC work and while I can bore you with the math… ether you connect “something” in line with the old receiver (there are lots of manufacturers out there) … or you leave the old radio disconnected when transmitting.Not too many radios are designed for 100 watts into an adjacent antenna, let alone 500W or 1kW…. This is NOT an Elecraft issue…. Sorry to vent, I love my K2’s Frank KG9H __ 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 Sub Receiver and protecting the Sub RX input
Now this has me wondering about having my 2 meter and 6 meter antennas in close proximity. From: Edward R Cole kl...@acsalaska.net To: Elecraft@mailman.qth.net Sent: Wednesday, January 28, 2015 4:44 PM Subject: Re: [Elecraft] K3 Sub Receiver and protecting the Sub RX input Semi-related topic: Recently, I was hosting a local 2m-SSB net and had my KX3-2M connected to a 7-element yagi pointed 90-degrees from the transmitting antenna array (K3+xvtr+150w amp). Spacing is about 40-feet horizontally and 30-feet vertically (Tx ant higher). Its normal to run the Preamp with the KX3 on 2m and when I transmitted the signal was strong enough to trigger overload protection in the KX3 which disables the preamp. Probably 25-dB front-back ratio on the transmitting antenna and maybe 15-dB rejection off the side of the Rx antenna (both yagis) so estimated power at the KX3 is +52-dBm - 40dB = +12 dBm (not including space loss between antennas). +12 dBm into the KX3-2M is pretty marginal for safety of the preamp. Probably actual level is closer to 0 dBm (because I didn't include coax loss or space loss). -33 dBm signal from my XG3 will drive the KX3 to S9+40 (-73 dBm=S9*). *with preamp=ON. Since antennas are within near-fields, ordinary space loss formula do not apply. That is the typical situation with the KRX3 used on HF. 1-watt is way too high for safety for my eme preamps. +5 dBm is my maximum tolerance. +15 dBm is certainty of blow out. (I disconnect other antennas when running 1300w on the main array) 73, Ed - KL7UW http://www.kl7uw.com Kits made by KL7UW Dubus Mag business: dubus...@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 hlyin...@yahoo.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 10Watt RF SSB TX distortion
Hi Folks Getting a few reports of slightly ragged SSB audio TX. check here definitely NQR ( not quite right ) Used another receiver to chase the signal path from the SSB board to the power stages. Distortion is in finals. They appear to be on the very edge of class B. Deceased resistor value R59 to increase bias current. My K2 meter may not be accurate; previous value TX showing 0.64A , moved to 0.78A. Received audio is now very clean. R59 value approx 1K. No apparent increase in temps with casual use. serial 6534 built several years ago. cheers Paul b zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-10Watt-RF-SSB-TX-distortion-tp7597651.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] My Conditions!
Hi John, I am more compassionate and generous than most folks on this reflector and would be very happy to send you my entire life savings. Please give me your wire transfer instructions. I will convert everything we own to cash and transfer said funds to you as soon as possible. I await your wire transfer instructions 73, Bob/AA6VB From: Rich - K1HTV k1...@comcast.net To: Elecraft Reflector elecraft@mailman.qth.net Sent: Tuesday, January 27, 2015 12:54 PM Subject: Re: [Elecraft] My Conditions! John, we on the Elecraft reflector can't help you, but there are some folks in Nigeria, who write to most of us, who say that they have millions of dollars. I'm sure that they would love to send you some money to help you out. :-) 73, Rich - K1HTV = = = John Lawrence via Elecraft wrote on 1/27/2015 9:14 AM: - This mail is in HTML. Some elements may be ommited in plain text. - Sorry for any inconvenience, I'm in a terrible situation. Am stranded here in Manila, Philippines since last night. I was hurt and robbed on my way to the hotel I stayed and my luggage is still in custody of the hotel management pending when I make payment on outstanding bills I owe. Am waiting for my colleagues to send me money to get back home but they have not responded and my return flight will be leaving soon. Please let me know if you can help and I will refund the money back to you as soon as I get back home. Please let me know if I can count on you and I need you to keep checking your email because it's the only way I can reach you at the moment. Let me know if you can be of help. Best regards John John Lawrence Pond Brook Farm 455 Flanders Corner Road Waldoboro, Maine 04572 j123...@aol.com 207-605-2154 __ 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 bobchor...@yahoo.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] KX3: Hi SWR on 20m 30m after KX3-2M install
Folks, Do not be complacent about static coming in from the antenna in the winter. Even though there may be no lightning - wind, rain or snow can build up a very large static charge. I am not saying that was Brian's situation, but be aware that possibility does exist. Make certain there is a DC path across your feedlines to bleed off a static charge. A non-inductive resistor with a value between 5k and 50k will do the job. If you use an antenna switch, that is a good place to add those resistors. If you have no other choice, mount the resistor in a PL-259 body and put it on one side of a TEE adapter - the rig goes on one other side and the last side goes to the antenna. 73, Don W3FPR On 1/28/2015 4:26 PM, Brian Waterworth wrote: It is winter where I am (snow, cold :-) and we don't get lightning at this time of year. __ 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] IF out of 2nd Receiver in K3?
Right, the P3 would work only in tracking mode (no fixed-tune mode) and the sub receiver frequency and receiver bandwidth would not display on the P3. Also, click-to-QSY would not work and the reference level would not be correct. But you can still change the span, offset the center frequency, change the reference level and scale, turn on the waterfall and averaging, adjust the markers (reading relative frequency) and use most of the other features. Alan N1AL On 01/28/2015 04:57 PM, David Gilbert wrote: As best I remember, though, the P3 talks only to the main receiver ... right? I believe that anyone wanting to display the sub-receiver would have to use a different panadapter scheme if they want handshaking capability such as frequency information, point/click QSY, etc. The N2QT modification described in the June 12 PVRC newsletter (easily found via Google search) describes how to do this in better detail than the reference below. Dave AB7E On 1/28/2015 4:43 PM, Alan wrote: There is no official Elecraft modification to access the sub-receiver IF output, but they do have some information on the web site about others have done it: http://www.elecraft.com/K3/K3FAQ.htm#sub%20rx%20if Alan N1AL On 01/28/2015 10:39 AM, Doug Ellmore wrote: Is there a way to get the IF out of the optional 2nd receiver of a K3? In addition to looking at two different bands in HF, I am thinking it would be great to be able to look at both 6m and 2m for field day with one K3. __ 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] SPEAKER FOR K3
Same here. There will likely be some on sale soon ... -- Mike Flowers, K6MKF, NCDXC - It's about DX! On Jan 28, 2015, at 6:59 PM, Harry Yingst via Elecraft elecraft@mailman.qth.net wrote: That's kinda like asking what's the best Key I use a pair or RCA Branded Minimus 7 Some will unhook the tweeters but I like them stock From: Bob Gibson via Elecraft elecraft@mailman.qth.net To: Elecraft@mailman.qth.net Elecraft@mailman.qth.net Sent: Wednesday, January 28, 2015 7:16 PM Subject: [Elecraft] SPEAKER FOR K3 What seems to be the best speaker for the k3? I'm using a A-COM and I am just not happy with the way it sounds.. I know the RX EQ can change the sound! I know I will get all different answers, but at least I can see what everyone may or may not be using. 73s Bob W5RG __ 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 hlyin...@yahoo.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 mike.flow...@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 USB--Serial Names OT, Kinda
Hi folks, Looking for some help identifying the USB—Serial adapter names on Windows 8.1. Here’s the situation: I have a KX3 and a K3. Each has it’s own USB—Serial adapter from Elecraft. These USB guys plug into my iMac. I run the K3 on the Mac side of the machine, and the KX3 under VMWare Fusion and Windows 8.1 on “the other side”. On the Mac side I use MacLogger DX (MLDX), FLDIGI, and WSJT-X. When I configure the radio connection, MLDX knows the “names” of each adapter. the one for the K3 is A8003Ssu and the KX3’s adapter is A501XNHZ. On the Mac side, it is easy to determine which adapter is associated with which radio. However, on the Windows side, it is not an easy matter at all. Nowhere can I find any place where it shows the names of these two adapters. And the reason why it is a problem is thus: If the K3 is not “connected” to either MLDX, or WSJT-X, or FLDIGI on the Mac side and I bring up Windows, I often get both adapters available to me under Fusion. If I attach the wrong one to my apps on the Windows side, things are ugly and take a while to correct. Is there some way, either with Windows itself, or with VMWare Fusion to see these device names? __ 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] IF out of 2nd Receiver in K3?
Hi That assumes one is using a p3. A software panadapter would work fine except that there would no way to get the if shift from the sub since that command doesn't exist. It could still be done but it would be a bit of a hack. Tom va2fsq.com On Jan 28, 2015 8:20 PM, Alan n...@sonic.net wrote: Right, the P3 would work only in tracking mode (no fixed-tune mode) and the sub receiver frequency and receiver bandwidth would not display on the P3. Also, click-to-QSY would not work and the reference level would not be correct. But you can still change the span, offset the center frequency, change the reference level and scale, turn on the waterfall and averaging, adjust the markers (reading relative frequency) and use most of the other features. Alan N1AL On 01/28/2015 04:57 PM, David Gilbert wrote: As best I remember, though, the P3 talks only to the main receiver ... right? I believe that anyone wanting to display the sub-receiver would have to use a different panadapter scheme if they want handshaking capability such as frequency information, point/click QSY, etc. The N2QT modification described in the June 12 PVRC newsletter (easily found via Google search) describes how to do this in better detail than the reference below. Dave AB7E On 1/28/2015 4:43 PM, Alan wrote: There is no official Elecraft modification to access the sub-receiver IF output, but they do have some information on the web site about others have done it: http://www.elecraft.com/K3/K3FAQ.htm#sub%20rx%20if Alan N1AL On 01/28/2015 10:39 AM, Doug Ellmore wrote: Is there a way to get the IF out of the optional 2nd receiver of a K3? In addition to looking at two different bands in HF, I am thinking it would be great to be able to look at both 6m and 2m for field day with one K3. __ 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 tom...@videotron.ca __ 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] SPEAKER FOR K3
I use a pair of old radio shack minus 7. Not only do they sound good but also look good with the K3. 73, Mike WA5POK -- On Wed, Jan 28, 2015 4:16 PM PST Bob Gibson via Elecraft wrote: What seems to be the best speaker for the k3? I'm using a A-COM and I am just not happy with the way it sounds.. I know the RX EQ can change the sound! I know I will get all different answers, but at least I can see what everyone may or may not be using. 73s Bob W5RG __ 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 mikefur...@att.net __ 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] IF out of 2nd Receiver in K3?
Harry, While its a nice idea there are a couple of commands missing in the api to allow this to be done properly. If all you are interested is seeing the spectrum and doing qsys it probably is possible. But to do the job semi-correctly you would need some customized code to do so. Tom va2fsq.com On Jan 28, 2015 10:10 PM, Harry Yingst via Elecraft elecraft@mailman.qth.net wrote: Thank you I already have the Clifton labs Buffer amp and a softrock lite that I was got a while ago. It would be interesting if a Second P3 could be hooked up,I suspect it would have to be coded for the P3 to know what VFO it is looking at. I'll have to look into if someone already has written a NaP3 type program that supports 2 Receivers(I only played with that program briefly and found it to be nice) From: Mike Harris mike.har...@horizon.co.fk To: elecraft@mailman.qth.net Sent: Wednesday, January 28, 2015 6:36 PM Subject: Re: [Elecraft] IF out of 2nd Receiver in K3? See PVRC (Potomac Valley Radio Club) Newsletter June 2012. Regards, Mike VP8NO On 28/01/2015 18:20, Harry Yingst via Elecraft wrote: That would be nice You could run two P3s From: Doug Ellmore d...@ellmore.net To: elecraft@mailman.qth.net Sent: Wednesday, January 28, 2015 1:39 PM Subject: [Elecraft] IF out of 2nd Receiver in K3? Is there a way to get the IF out of the optional 2nd receiver of a K3? In addition to looking at two different bands in HF, I am thinking it would be great to be able to look at both 6m and 2m for field day with one K3. Doug NA1DX na...@arrl.net www.ellmore.net/na1dx __ 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 hlyin...@yahoo.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 tom...@videotron.ca __ 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] IF out of 2nd Receiver in K3?
Thank you I already have the Clifton labs Buffer amp and a softrock lite that I was got a while ago. It would be interesting if a Second P3 could be hooked up,I suspect it would have to be coded for the P3 to know what VFO it is looking at. I'll have to look into if someone already has written a NaP3 type program that supports 2 Receivers(I only played with that program briefly and found it to be nice) From: Mike Harris mike.har...@horizon.co.fk To: elecraft@mailman.qth.net Sent: Wednesday, January 28, 2015 6:36 PM Subject: Re: [Elecraft] IF out of 2nd Receiver in K3? See PVRC (Potomac Valley Radio Club) Newsletter June 2012. Regards, Mike VP8NO On 28/01/2015 18:20, Harry Yingst via Elecraft wrote: That would be nice You could run two P3s From: Doug Ellmore d...@ellmore.net To: elecraft@mailman.qth.net Sent: Wednesday, January 28, 2015 1:39 PM Subject: [Elecraft] IF out of 2nd Receiver in K3? Is there a way to get the IF out of the optional 2nd receiver of a K3? In addition to looking at two different bands in HF, I am thinking it would be great to be able to look at both 6m and 2m for field day with one K3. Doug NA1DX na...@arrl.net www.ellmore.net/na1dx __ 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 hlyin...@yahoo.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] SPEAKER FOR K3
That's kinda like asking what's the best Key I use a pair or RCA Branded Minimus 7 Some will unhook the tweeters but I like them stock From: Bob Gibson via Elecraft elecraft@mailman.qth.net To: Elecraft@mailman.qth.net Elecraft@mailman.qth.net Sent: Wednesday, January 28, 2015 7:16 PM Subject: [Elecraft] SPEAKER FOR K3 What seems to be the best speaker for the k3? I'm using a A-COM and I am just not happy with the way it sounds.. I know the RX EQ can change the sound! I know I will get all different answers, but at least I can see what everyone may or may not be using. 73s Bob W5RG __ 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 hlyin...@yahoo.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 USB--Serial Names OT, Kinda
Have you looked in Windows 'Device Manager'? -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of James Bennett Sent: Wednesday, January 28, 2015 8:32 PM To: Elecraft Reflector Reflector Subject: [Elecraft] K3 USB--Serial Names OT, Kinda Hi folks, Looking for some help identifying the USB—Serial adapter names on Windows 8.1. Here’s the situation: I have a KX3 and a K3. Each has it’s own USB—Serial adapter from Elecraft. These USB guys plug into my iMac. I run the K3 on the Mac side of the machine, and the KX3 under VMWare Fusion and Windows 8.1 on “the other side”. On the Mac side I use MacLogger DX (MLDX), FLDIGI, and WSJT-X. When I configure the radio connection, MLDX knows the “names” of each adapter. the one for the K3 is A8003Ssu and the KX3’s adapter is A501XNHZ. On the Mac side, it is easy to determine which adapter is associated with which radio. However, on the Windows side, it is not an easy matter at all. Nowhere can I find any place where it shows the names of these two adapters. And the reason why it is a problem is thus: If the K3 is not “connected” to either MLDX, or WSJT-X, or FLDIGI on the Mac side and I bring up Windows, I often get both adapters available to me under Fusion. If I attach the wrong one to my apps on the Windows side, things are ugly and take a while to correct. Is there some way, either with Windows itself, or with VMWare Fusion to see these device names? __ 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 fptowns...@earthlink.net __ 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 USB--Serial Names OT, Kinda
Yep, sure did. And I don’t find those names anywhere. Only “generic” USB serial adapter nomenclature. On Wednesday, Jan 28, 2015, at Wednesday, 9:16 PM, Fred Townsend fptowns...@earthlink.net wrote: Have you looked in Windows 'Device Manager'? -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net mailto:elecraft-boun...@mailman.qth.net] On Behalf Of James Bennett Sent: Wednesday, January 28, 2015 8:32 PM To: Elecraft Reflector Reflector Subject: [Elecraft] K3 USB--Serial Names OT, Kinda Hi folks, Looking for some help identifying the USB—Serial adapter names on Windows 8.1. Here’s the situation: I have a KX3 and a K3. Each has it’s own USB—Serial adapter from Elecraft. These USB guys plug into my iMac. I run the K3 on the Mac side of the machine, and the KX3 under VMWare Fusion and Windows 8.1 on “the other side”. On the Mac side I use MacLogger DX (MLDX), FLDIGI, and WSJT-X. When I configure the radio connection, MLDX knows the “names” of each adapter. the one for the K3 is A8003Ssu and the KX3’s adapter is A501XNHZ. On the Mac side, it is easy to determine which adapter is associated with which radio. However, on the Windows side, it is not an easy matter at all. Nowhere can I find any place where it shows the names of these two adapters. And the reason why it is a problem is thus: If the K3 is not “connected” to either MLDX, or WSJT-X, or FLDIGI on the Mac side and I bring up Windows, I often get both adapters available to me under Fusion. If I attach the wrong one to my apps on the Windows side, things are ugly and take a while to correct. Is there some way, either with Windows itself, or with VMWare Fusion to see these device names? __ 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 http://www.qsl.net/donate.html Message delivered to fptowns...@earthlink.net mailto:fptowns...@earthlink.net __ 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] IF out of 2nd Receiver in K3?
Doug, Its not difficult if you do not mind soldering a disc ceramic cap to the subreceiver board and running some RG-174. I outlined how I did that on my webpage: http://www.kl7uw.com/LINRAD.htm Scroll down the page until you come to the heading: Connecting K3 Sub-Receiver IF to LP-Pan: Connection is near the noise blanker jack-J78, pin1 and W3. Just solder a .001 uF disc ceramic cap and attach other end to center conductor of the RG-174. Full instructions on my website. Use static protection while handling the open sub-receiver. 73, Ed - KL7UW -- From: Doug Ellmore d...@ellmore.net To: elecraft@mailman.qth.net Subject: [Elecraft] IF out of 2nd Receiver in K3? Message-ID: canan7wwcmqptd9qmpa+3zj73tlexsxjzby1vsxdy+yqsrlm...@mail.gmail.com Content-Type: text/plain; charset=ISO-8859-1 Is there a way to get the IF out of the optional 2nd receiver of a K3? In addition to looking at two different bands in HF, I am thinking it would be great to be able to look at both 6m and 2m for field day with one K3. Doug NA1DX na...@arrl.net www.ellmore.net/na1dx 73, Ed - KL7UW http://www.kl7uw.com Kits made by KL7UW Dubus Mag business: dubus...@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
Re: [Elecraft] PX3 with other I/Q Receiver?
I did, it works With a Softrock-RX for 30 metres. The LO is an xtal on 40.5 MHz that produces 10.125 MHz and that shows on the PX3 as 0Hz. The real problem comes with the need to recalibrate te I/Q phase and amplitude in order to have a good image rejection. On -25 kHz I see the DDK9 teleprinter and on +20 kHz I see the average bunch of data modes and in between: CW sigs. For me it was merely try and see what happens for the KX3 obviously rocks much better... 73, Peter - PA0PJE Op 2015-01-27 23:52 schreef Tom Blahovici: Hi It would not work properly as is. I think one would need to send information to the px3 via the serial port to establish the centre frequency, markers, and respond to qsy''s.etc. as well as react to requests coming from the px3. Assuming these are standard api type commands it could be a possibility. Could be a fun project. Tom va2fsq.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] IF out of 2nd Receiver in K3?
Is there a way to get the IF out of the optional 2nd receiver of a K3? In addition to looking at two different bands in HF, I am thinking it would be great to be able to look at both 6m and 2m for field day with one K3. Doug NA1DX na...@arrl.net www.ellmore.net/na1dx __ 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] LARGE STASH OF PACKET MODEM MANUALS
Hey All, Pat and I are downsizing in retirement. That means deep cleaning the basement and shack! I've got my new toys to play with - K3 and P3 with SteppIR and concentrating mostly on CW and contesting therein. Hence, the rest is going out the door. I have the following manuals packed for shipping, total 12 lbs, given that someone vhf and digitally oriented might want them, simply for the UPS charge. First to email me gets em. 73, Phil in Lawrence, Kansas, W0XI Here is the list of RFC and Kantronics Manuals on hand: KPC-2000 PAGING CONTROLLER TNPP LINE MODEM 1200 KPC-3 PLUS INTRO, TWO COPIES COMMANDS MANUAL for KAM, KPC-4, KPC-2400, KPC-2, KPC-1 INSTALLATION MANUAL for KAM, KPC-4, KPC-2400, KPC-2, KPC-1 KANTRONICS DATA ENGINE KPC-9612 USER’S GUIDE KPC-9612 PLUS MANUAL KAM 08 USER’S GUIDE KWM -1200 PLUS K-NET FOR KPC-9612 RFC 2/70 POWER AMP 2M/70CM RFC 4-310 70 CM AMP RPC 2-417 OP MANUAL RFC 2-317 OP MANUAL RFC 2-117 2 METER AMP OP MANUAL RFC 2-23 AND RFC 3-22 OP MANUAL INTRO AND OP OF AMTOR DVR2-2 OP MANUAL GETTING STARTED WITH HOST MASTER II+ HOST MASTER II+ MANUAL/REFERENCE D4-10 UHF TRANSCIEVER OP MANUAL WEATHERNODE OP MANUAL --- This email has been checked for viruses by Avast antivirus software. http://www.avast.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] PX3 with other I/Q Receiver?
Hi Yes but can't you calibrate this out using a signal generator and the px3 calibration facility? Of course, it appears that the iq correction operates on only a single frequency and does not do frequency based corrections. I could be wrong about this though. One way to tell is to put a string signal near the left of the display at - 96khz and see if the image is at the extreme left. Tom va2fsq.com On Jan 28, 2015 11:47 AM, Peter Eijlander (PA0PJE) pa0...@xs4all.nl wrote: I did, it works With a Softrock-RX for 30 metres. The LO is an xtal on 40.5 MHz that produces 10.125 MHz and that shows on the PX3 as 0Hz. The real problem comes with the need to recalibrate te I/Q phase and amplitude in order to have a good image rejection. On -25 kHz I see the DDK9 teleprinter and on +20 kHz I see the average bunch of data modes and in between: CW sigs. For me it was merely try and see what happens for the KX3 obviously rocks much better... 73, Peter - PA0PJE Op 2015-01-27 23:52 schreef Tom Blahovici: Hi It would not work properly as is. I think one would need to send information to the px3 via the serial port to establish the centre frequency, markers, and respond to qsy''s.etc. as well as react to requests coming from the px3. Assuming these are standard api type commands it could be a possibility. Could be a fun project. Tom va2fsq.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 tom...@videotron.ca __ 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] Scanning with K3
Howdy K3' people: I was sittin' here, doing something else, and wanted to scan 10.120 down to 10.101 for CQ'ing on CW .. and then I'd call them. So I set one freq in memory 99 and the other in mem 98; pressed A-B; the other mem back into A, then 'Scan. I got the scan but it stopped at the bottom and never restarted. Should it scan continually or just one time? thanks. -- 73 KD7YZ Bob __ 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] KX3: Hi SWR on 20m 30m after KX3-2M install
Hi I just recently installed the 2M transverter in my KX-3. I’m now noticing high (11 to 25) SWR readings on 20m and I wondered if this might be related (I don’t recall such high readings before). I’m using an off-center fed dipole that has worked quite well in the past. The KX3 autotuner worked so well in the past, and I’ve seen it tune on relatively short random wires, so inability to tune on a good antenna seems rather odd. Part of the installation required displacing L40 and L43 on the main RF board to make room for the SMA connector. It’s possible to break one of the leads on the inductor while doing this. L40 (as I recall) felt pretty tight and I may have inadvertently pushed it too hard. What would be the symptoms of an open circuit on either of those inductors? Other than high SWR on 20m and 30m, I haven’t seen any anomalous behavior. 73s Ed __ 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] KPA500 powercycling at higher wattages into KPA500
My KAT500 is getting power-cycled in CW and RTTY modes at various drive levels from the K3 on different bands. I can run SSB full power with no problems at all, and receive superb audio reports (no hint of RF in my transmissions). I am thinking I have either an excessive voltage drop on the AC circuit or perhaps there is enough RF getting into the shack to trip up the KAT500 power when using the higher duty cycle modes. Everything is running on the same 120v house circuit. I experimented with moving both the amp and the KAT500 to a different circuit in the same room, but this did not solve the problem. Let me first describe the equipment, and then I'll list the frequencies and power thresholds that tripped the KAT500 into a power cycle: Antenna: Traffie Hex Beam. Very low SWR, typically 1.2 or less, sometimes 1.5 on 10 and 12 meters. The antenna is over a portion of the house, and about 20 feet away from the shack. The coax is grounded at the base of the antenna (two ground rods, through a lightning arrestor). KAT500: I have this in BYPASS mode. I don't really need the tuner for the hex beam, but I plan on using it with a future vertical for 40m. I am powering the KAT500 with its own AC power adapter. For good measure, I wrapped about 4 turns of the power cord through a ferrite bead at the transformer end of the cable. This is a 15V 1000mAh power adapter from Radio Shack. KPA500 is plugged into the same circuit on its own outlet at the wall. HV reads 78.5 at rest. The unit is sitting on top of the KAT500 with the foldout legs extended. K3 is powered with an Astron RS-35M, on the same house circuit. P3 is powered by the K3 VDC out On 15 meters CW, the KAT500 begins to experience power cycles driving 20-22 watts. The amp, when it crosses about 450 watts, the KAT500 power cycles. I ran 30 watts into it for about 620+ out with no problems on SSB, SWR never exceeded 1.2 on the KAT500's indicator lamps. On 12 meters CW, the KAT500 begins to experience power cycles driving just 9 watts (about 180w out). SWR on this band is a steady 1.5. I did have some success by moving the KAT500's power adapter to the other circuit in the room and was able to push the K3 to 22 watts (480 out) before the powercycling returned. This lead me to believe I had a voltage drop issue, perhaps from running the amp on the same 110 circuit. But on 10 meters I still had problems even using the other circuit to power the KAT500. That makes me think noise is getting into the KAT500, or perhaps RF from the antenna is putting noise on my AC house circuits. I was able to run the amp to full power on SSB with no power cycling of the KAT500. On 10 meters the KAT500 power cycles with just 6 watts drive (170 out). On phone I can run full power with no issues. SWR is 1.2 on this band. I have a Morgan AC line filter arriving tomorrow and I'll see if the problem persists with it filtering the house circuit feeding the shack equipment. Do these symptoms smell more like a noise issue (RF in the shack) or a line voltage deficiency with the house circuit? I'm think probably taxing the line in the higher duty cycles, and it just manifests at different thresholds on different frequencies. When transmitting a long string of CW or RTTY, if the KAT500 gets into repeated power cycles the KPA500 eventually throws a fault. Some other observations: If I turn on my desk lamps, at the higher outputs the lamps will modulate slightly with my voice. I think I'm sucking too much juice from the circuit, but this is just a guess on my part. Generally the only other piece of equipment in the house that seems to be affected by RF is our DirectTV receiver (the notorious touch-panel design). It is generally only affected on 10 meters, with a high duty cycle mode like RTTY. Can anyone provide me some more troubleshooting tips? Thanks!Jeff, W6UX __ 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] KPA500 powercycling at higher wattages into KPA500
I suspect voltage sag off the 120v line. Lights flickering is a symptom. The specs call for 1000VA in and that translates to about 8 amps at 120v. The specified fuse is 12 amps so peaks may be higher. Add everything else in and consider you may have a 15 amp line with a long way back to the fusebox and it is possible your voltage is dropping. Measure the AC voltage with the key down by plugging a voltmeter into the outlet. Also check the HV in the Amp. From the manual: The KPA500 operates to full specifications when the HV under full load is between 60V and 85V as shown on the LCD (Tap HV to display the voltage under CW “key down” conditions at full power). The maximum voltage is set using transformer taps as described on pg. 9. The KPA500 will operate with reduced performance at voltages as low as 40V. When the voltage is less than 60V the maximum output power may be less than 500W and distortion products will increase. K4ia Buck Fredericksburg, VA On 1/28/2015 2:15 PM, Jeff Hall wrote: My KAT500 is getting power-cycled in CW and RTTY modes at various drive levels from the K3 on different bands. I can run SSB full power with no problems at all, and receive superb audio reports (no hint of RF in my transmissions). I am thinking I have either an excessive voltage drop on the AC circuit or perhaps there is enough RF getting into the shack to trip up the KAT500 power when using the higher duty cycle modes. Everything is running on the same 120v house circuit. I experimented with moving both the amp and the KAT500 to a different circuit in the same room, but this did not solve the problem. Let me first describe the equipment, and then I'll list the frequencies and power thresholds that tripped the KAT500 into a power cycle: Antenna: Traffie Hex Beam. Very low SWR, typically 1.2 or less, sometimes 1.5 on 10 and 12 meters. The antenna is over a portion of the house, and about 20 feet away from the shack. The coax is grounded at the base of the antenna (two ground rods, through a lightning arrestor). KAT500: I have this in BYPASS mode. I don't really need the tuner for the hex beam, but I plan on using it with a future vertical for 40m. I am powering the KAT500 with its own AC power adapter. For good measure, I wrapped about 4 turns of the power cord through a ferrite bead at the transformer end of the cable. This is a 15V 1000mAh power adapter from Radio Shack. KPA500 is plugged into the same circuit on its own outlet at the wall. HV reads 78.5 at rest. The unit is sitting on top of the KAT500 with the foldout legs extended. K3 is powered with an Astron RS-35M, on the same house circuit. P3 is powered by the K3 VDC out On 15 meters CW, the KAT500 begins to experience power cycles driving 20-22 watts. The amp, when it crosses about 450 watts, the KAT500 power cycles. I ran 30 watts into it for about 620+ out with no problems on SSB, SWR never exceeded 1.2 on the KAT500's indicator lamps. On 12 meters CW, the KAT500 begins to experience power cycles driving just 9 watts (about 180w out). SWR on this band is a steady 1.5. I did have some success by moving the KAT500's power adapter to the other circuit in the room and was able to push the K3 to 22 watts (480 out) before the powercycling returned. This lead me to believe I had a voltage drop issue, perhaps from running the amp on the same 110 circuit. But on 10 meters I still had problems even using the other circuit to power the KAT500. That makes me think noise is getting into the KAT500, or perhaps RF from the antenna is putting noise on my AC house circuits. I was able to run the amp to full power on SSB with no power cycling of the KAT500. On 10 meters the KAT500 power cycles with just 6 watts drive (170 out). On phone I can run full power with no issues. SWR is 1.2 on this band. I have a Morgan AC line filter arriving tomorrow and I'll see if the problem persists with it filtering the house circuit feeding the shack equipment. Do these symptoms smell more like a noise issue (RF in the shack) or a line voltage deficiency with the house circuit? I'm think probably taxing the line in the higher duty cycles, and it just manifests at different thresholds on different frequencies. When transmitting a long string of CW or RTTY, if the KAT500 gets into repeated power cycles the KPA500 eventually throws a fault. Some other observations: If I turn on my desk lamps, at the higher outputs the lamps will modulate slightly with my voice. I think I'm sucking too much juice from the circuit, but this is just a guess on my part. Generally the only other piece of equipment in the house that seems to be affected by RF is our DirectTV receiver (the notorious touch-panel design). It is generally only affected on 10 meters, with a high duty cycle mode like RTTY. Can anyone provide me some more troubleshooting tips? Thanks!Jeff, W6UX
Re: [Elecraft] KPA500 powercycling at higher wattages into KPA500
First thing, unplug the antenna and plug in a dummy load, then retest. If there is no problem, then you have a partial answer. Try running the KAT500 from the same 13.8 supply as the transceiver. You could have RF getting in to the power supply feeding the KAT500. Make sure the output of that supply does not go above 15V, or you could experience other problems with the KAT500, such as component failure or regulator shutdown from high power supply voltage. If things work right with the dummy load, you are probably experiencing problems with unbalanced currents on the feedline to the Hex Beam. In fact I would bet on this in any case. A good Choke “balun” on the feedline will work wonders. I use several, starting with about a dozen toroids at the antenna feedline (in my case an old A3 tribander) with additional toroids at the feedline entry. In fact all coax coming my shack now gets this same treatment, which has quieted things immensely as far as RF is concerned. See the excellent paper by K9YC at his web site for details on how to handle this stuff. The url: http://audiosystemsgroup.com/RFI-Ham.pdf - Jack Brindle, W6FB On Jan 28, 2015, at 11:15 AM, Jeff Hall w...@ymail.com wrote: My KAT500 is getting power-cycled in CW and RTTY modes at various drive levels from the K3 on different bands. I can run SSB full power with no problems at all, and receive superb audio reports (no hint of RF in my transmissions). I am thinking I have either an excessive voltage drop on the AC circuit or perhaps there is enough RF getting into the shack to trip up the KAT500 power when using the higher duty cycle modes. Everything is running on the same 120v house circuit. I experimented with moving both the amp and the KAT500 to a different circuit in the same room, but this did not solve the problem. Let me first describe the equipment, and then I'll list the frequencies and power thresholds that tripped the KAT500 into a power cycle: Antenna: Traffie Hex Beam. Very low SWR, typically 1.2 or less, sometimes 1.5 on 10 and 12 meters. The antenna is over a portion of the house, and about 20 feet away from the shack. The coax is grounded at the base of the antenna (two ground rods, through a lightning arrestor). KAT500: I have this in BYPASS mode. I don't really need the tuner for the hex beam, but I plan on using it with a future vertical for 40m. I am powering the KAT500 with its own AC power adapter. For good measure, I wrapped about 4 turns of the power cord through a ferrite bead at the transformer end of the cable. This is a 15V 1000mAh power adapter from Radio Shack. KPA500 is plugged into the same circuit on its own outlet at the wall. HV reads 78.5 at rest. The unit is sitting on top of the KAT500 with the foldout legs extended. K3 is powered with an Astron RS-35M, on the same house circuit. P3 is powered by the K3 VDC out On 15 meters CW, the KAT500 begins to experience power cycles driving 20-22 watts. The amp, when it crosses about 450 watts, the KAT500 power cycles. I ran 30 watts into it for about 620+ out with no problems on SSB, SWR never exceeded 1.2 on the KAT500's indicator lamps. On 12 meters CW, the KAT500 begins to experience power cycles driving just 9 watts (about 180w out). SWR on this band is a steady 1.5. I did have some success by moving the KAT500's power adapter to the other circuit in the room and was able to push the K3 to 22 watts (480 out) before the powercycling returned. This lead me to believe I had a voltage drop issue, perhaps from running the amp on the same 110 circuit. But on 10 meters I still had problems even using the other circuit to power the KAT500. That makes me think noise is getting into the KAT500, or perhaps RF from the antenna is putting noise on my AC house circuits. I was able to run the amp to full power on SSB with no power cycling of the KAT500. On 10 meters the KAT500 power cycles with just 6 watts drive (170 out). On phone I can run full power with no issues. SWR is 1.2 on this band. I have a Morgan AC line filter arriving tomorrow and I'll see if the problem persists with it filtering the house circuit feeding the shack equipment. Do these symptoms smell more like a noise issue (RF in the shack) or a line voltage deficiency with the house circuit? I'm think probably taxing the line in the higher duty cycles, and it just manifests at different thresholds on different frequencies. When transmitting a long string of CW or RTTY, if the KAT500 gets into repeated power cycles the KPA500 eventually throws a fault. Some other observations: If I turn on my desk lamps, at the higher outputs the lamps will modulate slightly with my voice. I think I'm sucking too much juice from the circuit, but this is just a guess on my part. Generally the only other piece of equipment in the house that seems to be affected by RF is our DirectTV
Re: [Elecraft] KPA500 powercycling at higher wattages into KPA500
That would not cause the KAT500 to shut down, though. In the situation you describe the KPA500 would continue to output power unless the HV supply drops below 40V. What I am saying is that if the 117V power supply on the KPA500 sags, the amplifier will just keep going, using what it gets. The output will show a corresponding sag, but no failures should result. The KPA should use the beefiest power cable you can find. Use of a small cable will also cause the power to sag, again with the output sagging, but that is all. A good feel of the power cable will show it to be somewhat warm, which means you are losing power through I squared losses in the cable. A heavier cable (like the one supplied) should not show this nearly as much. Again, I don’t believe this is the problem that W6UX is seeing in the KAT500, though. - Jack B, W6FB Elecraft Engineering On Jan 28, 2015, at 11:50 AM, Craig Buck via Elecraft elecraft@mailman.qth.net wrote: I suspect voltage sag off the 120v line. Lights flickering is a symptom. The specs call for 1000VA in and that translates to about 8 amps at 120v. The specified fuse is 12 amps so peaks may be higher. Add everything else in and consider you may have a 15 amp line with a long way back to the fusebox and it is possible your voltage is dropping. Measure the AC voltage with the key down by plugging a voltmeter into the outlet. Also check the HV in the Amp. From the manual: The KPA500 operates to full specifications when the HV under full load is between 60V and 85V as shown on the LCD (Tap HV to display the voltage under CW “key down” conditions at full power). The maximum voltage is set using transformer taps as described on pg. 9. The KPA500 will operate with reduced performance at voltages as low as 40V. When the voltage is less than 60V the maximum output power may be less than 500W and distortion products will increase. K4ia Buck Fredericksburg, VA On 1/28/2015 2:15 PM, Jeff Hall wrote: My KAT500 is getting power-cycled in CW and RTTY modes at various drive levels from the K3 on different bands. I can run SSB full power with no problems at all, and receive superb audio reports (no hint of RF in my transmissions). I am thinking I have either an excessive voltage drop on the AC circuit or perhaps there is enough RF getting into the shack to trip up the KAT500 power when using the higher duty cycle modes. Everything is running on the same 120v house circuit. I experimented with moving both the amp and the KAT500 to a different circuit in the same room, but this did not solve the problem. Let me first describe the equipment, and then I'll list the frequencies and power thresholds that tripped the KAT500 into a power cycle: Antenna: Traffie Hex Beam. Very low SWR, typically 1.2 or less, sometimes 1.5 on 10 and 12 meters. The antenna is over a portion of the house, and about 20 feet away from the shack. The coax is grounded at the base of the antenna (two ground rods, through a lightning arrestor). KAT500: I have this in BYPASS mode. I don't really need the tuner for the hex beam, but I plan on using it with a future vertical for 40m. I am powering the KAT500 with its own AC power adapter. For good measure, I wrapped about 4 turns of the power cord through a ferrite bead at the transformer end of the cable. This is a 15V 1000mAh power adapter from Radio Shack. KPA500 is plugged into the same circuit on its own outlet at the wall. HV reads 78.5 at rest. The unit is sitting on top of the KAT500 with the foldout legs extended. K3 is powered with an Astron RS-35M, on the same house circuit. P3 is powered by the K3 VDC out On 15 meters CW, the KAT500 begins to experience power cycles driving 20-22 watts. The amp, when it crosses about 450 watts, the KAT500 power cycles. I ran 30 watts into it for about 620+ out with no problems on SSB, SWR never exceeded 1.2 on the KAT500's indicator lamps. On 12 meters CW, the KAT500 begins to experience power cycles driving just 9 watts (about 180w out). SWR on this band is a steady 1.5. I did have some success by moving the KAT500's power adapter to the other circuit in the room and was able to push the K3 to 22 watts (480 out) before the powercycling returned. This lead me to believe I had a voltage drop issue, perhaps from running the amp on the same 110 circuit. But on 10 meters I still had problems even using the other circuit to power the KAT500. That makes me think noise is getting into the KAT500, or perhaps RF from the antenna is putting noise on my AC house circuits. I was able to run the amp to full power on SSB with no power cycling of the KAT500. On 10 meters the KAT500 power cycles with just 6 watts drive (170 out). On phone I can run full power with no issues. SWR is 1.2 on this band. I have a Morgan AC line filter arriving tomorrow and I'll see if the problem persists with it
