K3- TX off frequency
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I have the K3 put together, went well, but I am having a problem. I did the reference oscillator calibration using an Agilent frequency counter with a GPS reference (I use this setup to set my 100Mhz reference on 6GHz digital microwave equipment). I was testing tonight with my friend and he was having trouble hearing me, stating I was off frequency on TX. Our dials matched for me to hear him fine, and he never had issues when I had the K2 running, our dials matched. I checked my TX on my IFR1900 and found I was low in freq by 900 Hz. XIT is off. Filters are FM in FL1, AM in FL2, 2.7 in FL3, and 500Hz in FL4. Data was entered from the crystal filters properly (I think, looks fine). Where should I look to find the trouble? I'm stuck on AM right now since it is more forgiving frequency wise.
Thanks, Josh K6ZRX K3/100 722 K2 6391 K2/100 6097 _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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I found the problem. The "-S" was showing on the display for sync AM, which doesn't look like it's working yet. I had programmed this to PF1 for when it is activated, and had it on in SSB mode.
----- Original Message ---- From: J. Heide <[hidden email]> To: [hidden email] Sent: Wednesday, April 16, 2008 7:52:45 PM Subject: K3- TX off frequency I have the K3 put together, went well, but I am having a problem. I did the reference oscillator calibration using an Agilent frequency counter with a GPS reference (I use this setup to set my 100Mhz reference on 6GHz digital microwave equipment). I was testing tonight with my friend and he was having trouble hearing me, stating I was off frequency on TX. Our dials matched for me to hear him fine, and he never had issues when I had the K2 running, our dials matched. I checked my TX on my IFR1900 and found I was low in freq by 900 Hz. XIT is off. Filters are FM in FL1, AM in FL2, 2.7 in FL3, and 500Hz in FL4. Data was entered from the crystal filters properly (I think, looks fine). Where should I look to find the trouble? I'm stuck on AM right now since it is more forgiving frequency wise. Thanks, Josh K6ZRX K3/100 722 K2 6391 K2/100 6097 _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by J. Heide
Josh
The "-s" showing when on SSB or data modes is for faster turn around in ARQ modes, i.e. Amtor and Pactor. It currently shows "N/A" when you try to select it on AM. 73 Dave, G4AON K3/100 #80 ----------------- I found the problem. The "-S" was showing on the display for sync AM, which doesn't look like it's working yet. I had programmed this to PF1 for when it is activated, and had it on in SSB mode. <SNIP> Thanks, Josh K6ZRX _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by J. Heide
Hmmm - I've done the cal quite a few times too - I still get reports
I'm off freq. - the last cal was done by a knowledgeable friend, using a 5MHz ref source (Racal crystal with oven), closely coupled to ANT1 input and we got the beat to about 2 seconds (a peak every 2 secs or so) - I still get reports I'm off freq. - I thought this was me. will watch this thread with interest. Any UK K3 owners who 'know' they are well on like to have a sched? 73 de M0XDF, K3 #174 -- Never let your sense of morals get in the way of doing what's right. -Isaac Asimov, scientist and writer (1920-1992) On 17 Apr 2008, at 03:52, J. Heide wrote: > I have the K3 put together, went well, but I am having a problem. I > did the reference oscillator calibration using an Agilent frequency > counter with a GPS reference (I use this setup to set my 100Mhz > reference on 6GHz digital microwave equipment). I was testing > tonight with my friend and he was having trouble hearing me, stating > I was off frequency on TX. Our dials matched for me to hear him > fine, and he never had issues when I had the K2 running, our dials > matched. I checked my TX on my IFR1900 and found I was low in freq > by 900 Hz. XIT is off. Filters are FM in FL1, AM in FL2, 2.7 in > FL3, and 500Hz in FL4. Data was entered from the crystal filters > properly (I think, looks fine). Where should I look to find the > trouble? I'm stuck on AM right now since it is more forgiving > frequency wise. _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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Hi Shane,
Lyle is more or less an official source. He is the programmer of the K3's DSP code. FYI from the K3 Owner's Operation Manual Errata (Rev C1-3, 02/01/08), <http://www.elecraft.com/manual/E740107E_K3_owner's_man_errata_C1-3.pdf> ======================================================================== Firmware Notes The firmware functions listed below are described in the Owner?s manual but were not ready for release at the time your K3 was shipped. As they are completed, they will become available via firmware upgrades (free). Please visit www.elecraft.com/K3/software for details. ? FM mode; RPT OFS and SQ MAIN/SUB menu entries (pending availability of FM filter) ? Subreceiver controls (pending release of KRX3 option) ? Fine calibration of the high-stability TCXO option (alternative: use CONFIG:REF CAL method) ? Channel-hop scanning (alternatives: normal VFO A -> VFO B scanning; manual memory recall) ? ESSB transmit (ESSB receive is available) ? Audible feedback on switch press (alternative: audible feedback via remote-control software) ? CW-to-PSK31 transmit mode (PSK31 receive text decode is available) ? Transverter address mapping to BAND0-3 outputs (CONFIG:KIO3; alternative: KRC2) ======================================================================== vy 73 de toby -- DD5FZ (ex 4n6fz, dj7mgq, dg5mgq, dd5fz) K2 #885 K2/100 #3248 K3/100 #67 _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by M0XDF
Use RWM on 9996kHz and you will be spot on. I am.
Ian Ian J Maude, G0VGS Sysop GB7MBC DX Cluster K2 #4044 | K3 #455 Sent from my iPod On 17 Apr 2008, at 08:19, "David Ferrington, M0XDF" <[hidden email] > wrote: > Hmmm - I've done the cal quite a few times too - I still get reports > I'm off freq. - the last cal was done by a knowledgeable friend, > using a 5MHz ref source (Racal crystal with oven), closely coupled > to ANT1 input and we got the beat to about 2 seconds (a peak every 2 > secs or so) - I still get reports I'm off freq. - I thought this was > me. > will watch this thread with interest. > Any UK K3 owners who 'know' they are well on like to have a sched? > 73 de M0XDF, K3 #174 > -- > Never let your sense of morals get in the way of doing what's right. > -Isaac Asimov, scientist and writer (1920-1992) > > On 17 Apr 2008, at 03:52, J. Heide wrote: >> I have the K3 put together, went well, but I am having a problem. I >> did the reference oscillator calibration using an Agilent frequency >> counter with a GPS reference (I use this setup to set my 100Mhz >> reference on 6GHz digital microwave equipment). I was testing >> tonight with my friend and he was having trouble hearing me, >> stating I was off frequency on TX. Our dials matched for me to hear >> him fine, and he never had issues when I had the K2 running, our >> dials matched. I checked my TX on my IFR1900 and found I was low in >> freq by 900 Hz. XIT is off. Filters are FM in FL1, AM in FL2, 2.7 >> in FL3, and 500Hz in FL4. Data was entered from the crystal filters >> properly (I think, looks fine). Where should I look to find the >> trouble? I'm stuck on AM right now since it is more forgiving >> frequency wise. > > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by M0XDF
OK, G4AON and I had a rather difficult QSO this morning and having
spoken on the phone last night and then on 3.775 SSB, we agreed we both sounded the same, both K3s reading 3.775.000 and I reduced the DSP to 1.8 and set NR at F1-4 because of the noise. So, I'm thinking those who say I'm off frequency may have a problem their end - obviously not K3s :-) Thanks to those who responded offering a QSO. 73 de M0XDF, K3 #174 -- I don't mind that you think slowly but I do mind that you are publishing faster than you think. -Wolfgang Pauli, physicist, Nobel laureate (1900-1958) On 17 Apr 2008, at 08:19, David Ferrington, M0XDF wrote: > Hmmm - I've done the cal quite a few times too - I still get reports > I'm off freq. - the last cal was done by a knowledgeable friend, > using a 5MHz ref source (Racal crystal with oven), closely coupled > to ANT1 input and we got the beat to about 2 seconds (a peak every 2 > secs or so) - I still get reports I'm off freq. - I thought this was > me. > will watch this thread with interest. > Any UK K3 owners who 'know' they are well on like to have a sched? > 73 de M0XDF, K3 #174 > -- > Never let your sense of morals get in the way of doing what's right. > -Isaac Asimov, scientist and writer (1920-1992) > > On 17 Apr 2008, at 03:52, J. Heide wrote: >> I have the K3 put together, went well, but I am having a problem. I >> did the reference oscillator calibration using an Agilent frequency >> counter with a GPS reference (I use this setup to set my 100Mhz >> reference on 6GHz digital microwave equipment). I was testing >> tonight with my friend and he was having trouble hearing me, >> stating I was off frequency on TX. Our dials matched for me to hear >> him fine, and he never had issues when I had the K2 running, our >> dials matched. I checked my TX on my IFR1900 and found I was low in >> freq by 900 Hz. XIT is off. Filters are FM in FL1, AM in FL2, 2.7 >> in FL3, and 500Hz in FL4. Data was entered from the crystal filters >> properly (I think, looks fine). Where should I look to find the >> trouble? I'm stuck on AM right now since it is more forgiving >> frequency wise. > _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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