[Elecraft] K3: TX off frequency
Today, for the first time I got a report claiming I was coming back about 100Hz high in frequency on SSB (USB). I received him spot on at the frequency he had on his dial and returned to him without any RIT or split function activated. This was an experienced ham, so this has me concerned. I have the 2.00 firmware. Knut - AB2TC -- View this message in context: http://www.nabble.com/K3%3A-TX-off-frequency-tp17711751p17711751.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3: TX off frequency
ab2tc wrote: Today, for the first time I got a report claiming I was coming back about 100Hz high in frequency on SSB (USB). I received him spot on at the frequency he had on his dial and returned to him without any RIT or split function activated. This was an experienced ham, so this has me concerned. I have the 2.00 firmware. How could he tell? When tuning in an SSB signal, the frequency could vary by + or - 100Hz or more according to personal taste, especially if you don't know what the other guy's voice really sounds like. - Julian, G4ILO K3 s/n: 222 K2 s/n: 392 G4ILO's Shack: www.g4ilo.com Zerobeat Ham Forums: www.zerobeat.net/smf -- View this message in context: http://www.nabble.com/K3%3A-TX-off-frequency-tp17711751p17713419.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3: TX off frequency
The harmonics of the voice, there was an interesting QEX article using this as the basis of code for auto-tuning SSB signals. January 1999, Tune SSB Automatically by Robert Dick Simon Brown, HB9DRV -- From: G4ILO [EMAIL PROTECTED] How could he tell? ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3: TX off frequency
Hi Simon Don't have the article in front of me, but if it says what I think it does, we used that technique back in the 60's when I ran a Heathkit SB100 transceiver. Worked a lot of DX with it, and was nearly always spot on their frequency. Worked really well. 73, Bob N6WG - Original Message - From: Simon Brown (HB9DRV) [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Saturday, June 07, 2008 2:52 PM Subject: Re: [Elecraft] K3: TX off frequency The harmonics of the voice, there was an interesting QEX article using this as the basis of code for auto-tuning SSB signals. January 1999, Tune SSB Automatically by Robert Dick Simon Brown, HB9DRV -- From: G4ILO [EMAIL PROTECTED] How could he tell? ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3- TX off frequency
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: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3- TX off frequency
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: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3- TX off frequency
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 [EMAIL PROTECTED] 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: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K3- TX off frequency
Is this a situation where the xmit frequency is 900 Hz below the received frequency, or a case of the frequency readout not matching another station's frequency readout? Ron AC7AC -Original Message- 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 [EMAIL PROTECTED] 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: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3- 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: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
