K2 with HRD freq wanders
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With my K3 in the Elecraft hospital after a failed suicide attempt (apparently despondent over my lack of attention while recovering from bronchitis), I hooked my K2 up to my computer. All works fine in HRD but after clicking on a K4M spot, the K2 goes to the right frequency but then random numbers appear slowly, one by one, in the hrd freq display. If I click on another dx frequency, the k2 goes right there but then the random number cycle starts again. K2 does not change frequency. Any ideas? It didn't do this before.
K2 is fully optioned 10 watt model. I LOVE my K3, K2, K1, KX1, XV-144 and thundering herd of mini modules! I even love my W2, even though we haven't met yet (kinda like how I feel about Sophia Loren). 73 WD6DBM Eric "the home of Twoer moonbounce" Sent from my iPhone ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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I'll bet you're using a USB to serial adapter that has a Prolific chipset. That looks like the same issue I had when I tested KComm with my K2 a while back. I could send commands to the radio OK but replies back were being corrupted. The solution in my case was to buy an adapter that has an FTDI chipset. I can't offer a money back guarantee, but it has helped several people to whom I made this suggestion, even with K3 communication problems.
Julian, G4ILO. K2 #392 K3 #222 KX3 #110
* G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html |
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In reply to this post by WD6DBM
Eric,
It really is hard to say what the cause is - there are several possibilities. It sounds like noise on the cable between the K2 and the computer - which is causing the data *to* the computer to be corrupted. Since the K2 changes frequency correctly, the path *from* the computer to the K2 is likely ok. Try a different serial port if possible or a different computer or if you are using one, a different USB to serial converter. If that does not help, check the negative voltage supply on the KIO2 option. If the negative voltage to the MAX1406 chip is missing, the signal may not swing low enough to satisfy the receiver in the computer (or USB to serial adapter). 73, Don W3FPR Eric wrote: > With my K3 in the Elecraft hospital after a failed suicide attempt (apparently despondent over my lack of attention while recovering from bronchitis), I hooked my K2 up to my computer. All works fine in HRD but after clicking on a K4M spot, the K2 goes to the right frequency but then random numbers appear slowly, one by one, in the hrd freq display. If I click on another dx frequency, the k2 goes right there but then the random number cycle starts again. K2 does not change frequency. Any ideas? It didn't do this before. > > K2 is fully optioned 10 watt model. > > I LOVE my K3, K2, K1, KX1, XV-144 and thundering herd of mini modules! I even love my W2, even though we haven't met yet (kinda like how I feel about Sophia Loren). > > 73 WD6DBM Eric > > "the home of Twoer moonbounce" > > Sent from my iPhone > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.422 / Virus Database: 270.14.21/2445 - Release Date: 10/19/09 06:40:00 > > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by WD6DBM
Dear Don:
I should have mentioned that the same computer, cable, USB converter works fine with the TS-480 connected to HRD. I think it must be in the K2. 73 Eric WD6DBM Sent from my iPhone On Oct 19, 2009, at 12:14 PM, Don Wilhelm <[hidden email]> wrote: Eric, It really is hard to say what the cause is - there are several possibilities. It sounds like noise on the cable between the K2 and the computer - which is causing the data *to* the computer to be corrupted. Since the K2 changes frequency correctly, the path *from* the computer to the K2 is likely ok. Try a different serial port if possible or a different computer or if you are using one, a different USB to serial converter. If that does not help, check the negative voltage supply on the KIO2 option. If the negative voltage to the MAX1406 chip is missing, the signal may not swing low enough to satisfy the receiver in the computer (or USB to serial adapter). 73, Don W3FPR Eric wrote: With my K3 in the Elecraft hospital after a failed suicide attempt (apparently despondent over my lack of attention while recovering from bronchitis), I hooked my K2 up to my computer. All works fine in HRD but after clicking on a K4M spot, the K2 goes to the right frequency but then random numbers appear slowly, one by one, in the hrd freq display. If I click on another dx frequency, the k2 goes right there but then the random number cycle starts again. K2 does not change frequency. Any ideas? It didn't do this before. K2 is fully optioned 10 watt model. I LOVE my K3, K2, K1, KX1, XV-144 and thundering herd of mini modules! I even love my W2, even though we haven't met yet (kinda like how I feel about Sophia Loren). 73 WD6DBM Eric "the home of Twoer moonbounce" Sent from my iPhone ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ------------------------------------------------------------------------ No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.422 / Virus Database: 270.14.21/2445 - Release Date: 10/19/09 06:40:00 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Not necessarily. The K2 can only communicate at 4800 baud. It is a well known fact that certain USB adapters have problems at lower speeds that are not apparent at higher ones. I have experienced problems with the K2 using an adapter that worked fine with the K3.
Julian, G4ILO. K2 #392 K3 #222 KX3 #110
* G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html |
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In reply to this post by WD6DBM
Eric,
While that test may indicate the failure is in the K2, as "Sportin' Life" from Porgy & Bess says "It ain't necessarily so". If you have another USB to Serial converter available, try that first. 73, Don WFPR Eric wrote: > Dear Don: > > I should have mentioned that the same computer, cable, USB converter works fine with the TS-480 connected to HRD. I think it must be in the K2. > > 73 > > Eric WD6DBM > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Dear Don and Elecrafters:
With KUSB I get the jumping freq display described earlier. When I switch to my older Keyspan Serial Adapter, the freq readout on HRD stays rock solid--BUT the K2 then displays the freq, then the power, then the freq...at odd intervals. The power number is going up and down by itself. When I transmit with PWR set to 7 watts, I get a HI CURR message, the proper number of bars light up BUT the three bars to the right of those are half lit! I've never seen that before. When I disconnect the serial cable and kill HRD the K2 behaves like its usual marvelous self. What is going on? When I first built the K2 about 6 months ago I tested it with the Keyspan adapter and all seemed well--but I didn't use it with a computer after that. 73, Eric WD6DBM ----- Original Message ---- From: Don Wilhelm <[hidden email]> To: Eric <[hidden email]> Cc: "[hidden email]" <[hidden email]> Sent: Mon, October 19, 2009 6:04:53 PM Subject: Re: [Elecraft] K2 with HRD freq wanders Eric, While that test may indicate the failure is in the K2, as "Sportin' Life" from Porgy & Bess says "It ain't necessarily so". If you have another USB to Serial converter available, try that first. 73, Don WFPR Eric wrote: > Dear Don: > I should have mentioned that the same computer, cable, USB converter works fine with the TS-480 connected to HRD. I think it must be in the K2. > > 73 > > Eric WD6DBM > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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