Re: [Elecraft] [K2] Frequency Calibration using WWV Audio Tones
See the article "Transmit and Receive on Frequency" as published in Sept. 2015 QST. 73 Bob, K4TAX On 10/31/2017 1:17 PM, Steve Kavanagh via Elecraft wrote: I was wondering if anyone had tried doing the reference oscillator frequency calibration for a K2 without the rather troublesome step of accurate zero-beating by feeding the 500/600 Hz audio tones from WWV/WWVH to a computer sound card or smart phone spectrum analyzer, or similar program? It's pretty easy to read these audio frequencies out to a precision of 1 Hz or so using Spectran or Spectrogram, for example. Right now, I'm seeing both WWV and WWVH tones (at the same time!) on my computer screen (within a few Hz of the correct audio frequencies), with the K2 tuned to 15000.24 kHz, so it really ought to be re-calibrated. Are there any issues with this option, before I start into the whole process? 73, Steve VE3SMA __ 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] Frequency Calibration using WWV Audio Tones
Steve, That is exactly how I tune WWV before reading the VFO (TP1) and BFO (TP2) frequencies. Adjust Control Board C22 until the 3 lower order digits match (since you are listening to a station known to be on a xx000.000 boundary the subtraction process is a snap. You may want to LOC the VFO so the knob is not accidentally changed. Additional information on my website www.w3fpr.com article on K2 Dial Calibration. After doing CAL PLL and CAL FIL, go back to WWV and check the results. If you are within 20 Hz, that is about as good as you can expect. The variation in BFO frequencies between filters in the K2 can be as much as 20 Hz because of the resolution of the DAC. 73, Don W3FPR On 10/31/2017 2:17 PM, Steve Kavanagh via Elecraft wrote: I was wondering if anyone had tried doing the reference oscillator frequency calibration for a K2 without the rather troublesome step of accurate zero-beating by feeding the 500/600 Hz audio tones from WWV/WWVH to a computer sound card or smart phone spectrum analyzer, or similar program? It's pretty easy to read these audio frequencies out to a precision of 1 Hz or so using Spectran or Spectrogram, for example. Right now, I'm seeing both WWV and WWVH tones (at the same time!) on my computer screen (within a few Hz of the correct audio frequencies), with the K2 tuned to 15000.24 kHz, so it really ought to be re-calibrated. Are there any issues with this option, before I start into the whole process? 73, Steve VE3SMA __ 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 donw...@embarqmail.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] Frequency Calibration using WWV Audio Tones
I was wondering if anyone had tried doing the reference oscillator frequency calibration for a K2 without the rather troublesome step of accurate zero-beating by feeding the 500/600 Hz audio tones from WWV/WWVH to a computer sound card or smart phone spectrum analyzer, or similar program? It's pretty easy to read these audio frequencies out to a precision of 1 Hz or so using Spectran or Spectrogram, for example. Right now, I'm seeing both WWV and WWVH tones (at the same time!) on my computer screen (within a few Hz of the correct audio frequencies), with the K2 tuned to 15000.24 kHz, so it really ought to be re-calibrated. Are there any issues with this option, before I start into the whole process? 73, Steve VE3SMA __ 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 frequency calibration
Lowell, Adjusting C22 has no immediate effect. You must do the entire procedure of CAL PLL and CAL FIL before any change will be observed. See the K2 Dial Calibration article on my website http://w3fpr.qrpradio.com for details and procedures. Lowell wrote: Adjusting C22 to clalibrate the K2 frequency had absolutely no effect when using WWV or a frequency counter as reference. I replaced C22, no change. Continuity between C22 and U6 checks ok. I suspicion a problem with U6. Any comments? 73, Lowell, W5FH ___ 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] K2 frequency calibration
Is the freq counter probe assembly available from Elecraft? I bought a constructed K2 that doesn't have one included. I'm hoping I won't have to lookup and order the crimp pins, housing and rg174 coax from Mouser, etc. in order to make one up. 73, Drew AF2Z On Sat, 05 May 2007 21:24:46 -0700, Vic K2VCO [EMAIL PROTECTED] wrote: Lowell wrote: Adjusting C22 to clalibrate the K2 frequency had absolutely no effect when using WWV or a frequency counter as reference. I replaced C22, no change. Continuity between C22 and U6 checks ok. I suspicion a problem with U6. Any comments? C22 only has an effect when you run CAL PLL. See the procedure at http://www.elecraft.com/Apps/K2%20C22%20Adjust%20App%20Note.pdf for the best way to calibrate the reference oscillator. ___ 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] K2 frequency calibration
Drew, Yes, it is K2FCTR and is priced at $10. Om the Elecraft website, click order and scroll down to 'Spare Parts and Mod Kits' (or something like that) - it will lead you to it. Or, you can make a phone call to order it. 73, Don W3FPR [EMAIL PROTECTED] wrote: Is the freq counter probe assembly available from Elecraft? I bought a constructed K2 that doesn't have one included. I'm hoping I won't have to lookup and order the crimp pins, housing and rg174 coax from Mouser, etc. in order to make one up. 73, Drew AF2Z On Sat, 05 May 2007 21:24:46 -0700, Vic K2VCO [EMAIL PROTECTED] wrote: Lowell wrote: Adjusting C22 to clalibrate the K2 frequency had absolutely no effect when using WWV or a frequency counter as reference. I replaced C22, no change. Continuity between C22 and U6 checks ok. I suspicion a problem with U6. Any comments? C22 only has an effect when you run CAL PLL. See the procedure at http://www.elecraft.com/Apps/K2%20C22%20Adjust%20App%20Note.pdf for the best way to calibrate the reference oscillator. ___ 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] K2 frequency calibration
RC, You are correct. I do have the freq counter probe. It is the RF probe that I need, if you have it. Otherwise, I can get one from Elecraft. BTW, this rig works great just as you built it! I didn't have the fun of putting it together but I do enjoy going through the manual and fiddling with alignment. I never could leave well-enough alone. And thanks to all who replied about this. 73, Drew AF2Z On Sun, 06 May 2007 07:24:42 -0700 (PDT), you wrote: Drew Do you mean the RF probe the freq counter probe is in the K2 and is left connected if I remember correctly RC kc5wa [EMAIL PROTECTED] wrote: Is the freq counter probe assembly available from Elecraft? I bought a constructed K2 that doesn't have one included. I'm hoping I won't have to lookup and order the crimp pins, housing and rg174 coax from Mouser, etc. in order to make one up. 73, Drew AF2Z ___ 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] K2 frequency calibration
Adjusting C22 to clalibrate the K2 frequency had absolutely no effect when using WWV or a frequency counter as reference. I replaced C22, no change. Continuity between C22 and U6 checks ok. I suspicion a problem with U6. Any comments? 73, Lowell, W5FH ___ 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] K2 frequency calibration
Lowell wrote: Adjusting C22 to clalibrate the K2 frequency had absolutely no effect when using WWV or a frequency counter as reference. I replaced C22, no change. Continuity between C22 and U6 checks ok. I suspicion a problem with U6. Any comments? C22 only has an effect when you run CAL PLL. See the procedure at http://www.elecraft.com/Apps/K2%20C22%20Adjust%20App%20Note.pdf for the best way to calibrate the reference oscillator. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ___ 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] K2 Frequency Calibration
All, Thanks for the input. By following the instructions from the inputs I received, I was able to calibrate K2. I'm all set. Thanks for the help. Sam N2MXY - - - - - - - - - - - - - - - - - - - - - - - - Samuel C. Ramac [EMAIL PROTECTED] The heavens declare the Glory of GOD, and the sky shows us His Handiwork Psalm 19:1 __o _'\, ...(*)/(*). From: [EMAIL PROTECTED] Reply-To: elecraft@mailman.qth.net To: elecraft@mailman.qth.net Subject: Elecraft Digest, Vol 20, Issue 16 Date: Fri, 16 Dec 2005 04:01:13 -0500 (EST) Send Elecraft mailing list submissions to elecraft@mailman.qth.net To subscribe or unsubscribe via the World Wide Web, visit http://mailman.qth.net/mailman/listinfo/elecraft or, via email, send a message with subject or body 'help' to [EMAIL PROTECTED] You can reach the person managing the list at [EMAIL PROTECTED] When replying, please edit your Subject line so it is more specific than Re: Contents of Elecraft digest... Today's Topics: 1. RE: FW: K2/100 SWR accuracy (Dan Barker) 2. PBMME Merry Christmas! (Edward R. Breneiser) 3. Grab a K6XX CW Indicator WPM+ Option Kit (Edward R. Breneiser) 4. WA3WSJ: Need Info about SMD LED Installed in KX1 (Edward R. Breneiser) 5. K1 setback... (Tom Althoff) 6. K1 Future Improvements to VFO D3, R17,R18 any one tried?? (Paul Webb) 7. Attaching sides to K2 RF board (jrb) 8. RE: Attaching sides to K2 RF board (Don Wilhelm) 9. RE: Attaching sides to K2 RF board (Craig Rairdin) 10. RE: Attaching sides to K2 RF board (Kevin Shaw) From: Dan Barker [EMAIL PROTECTED] To: elecraft@mailman.qth.net Subject: RE: [Elecraft] FW: K2/100 SWR accuracy Date: Thu, 15 Dec 2005 08:35:37 -0500 Be sure you are talking Apples and Apples here. There may be an Orange in the mix! The responses you've gotten for calabrating your SWR to match the external meters are assuming you are putting your tuner in bypass mode. You didn't say that, and may not be doing so. What you said was press[] TUNE. The K2 SWR meter will normally read the SWR between the Radio and the Tuner. Your external meters will read the SWR between the Tuner and the Antenna. There may be nothing wrong at all. Dan / WG4S / K2 #2456 snip You might want to adjust the KPA100's R26 and R27 to agree with your external meters. /snip snip When SWR is measured using a MFJ 962 tuner, a Daiwa 101N meter, a Bird 43, Autek RF-1, or a MFJ 249 analyzer, the indicated SWR is always higher than that shown on the K2. For example, pressing TUNE on the K2 may indicate a 1.0:1, but the other meters all consistently indicate a value significantly higher - lets say 1.4:1 /snip From: Edward R. Breneiser [EMAIL PROTECTED] To: [EMAIL PROTECTED] CC: [EMAIL PROTECTED], elecraft@mailman.qth.net,N3EPA [EMAIL PROTECTED], [EMAIL PROTECTED] Subject: [Elecraft] PBMME Merry Christmas! Date: Thu, 15 Dec 2005 09:49:23 -0500 Hello all, I was asked if repeater contacts are ok for the PB Xmas Event. Yes, any mode of communication is ok with me. If you can use two tin cans and a lng string, go for it! This is meant to be a FUN event. There's only ONE restriction on operating as a Polar Bear. You MUST operate from the highest ground in your area during this event. No set rules here, just try to get some elevation under your feet. Hope to put you in my Polar Bear Log this Saturday. Don't forget to send in those pictures of your Polar Bear Operation. As always, the first contact I make on Saturday will receive a polar bear claw replica with your call sign engraved into it and a hole drilled into it so you can put it on your keychain. It looks so COOL! 72, Ed, WA3WSJ Polar Bear #1 From: Edward R. Breneiser [EMAIL PROTECTED] To: elecraft@mailman.qth.net Subject: [Elecraft] Grab a K6XX CW Indicator WPM+ Option Kit Date: Thu, 15 Dec 2005 11:17:46 -0500 Hello all, Check out my web page for the K6XX CW Indicator LED in the WPM+ button. Click on the links for some great install pictures. If you want a look go to: http://www.wa3wsj.com/K6XX/K6XXwpmLED.html 72, Ed, WA3WSJ From: Edward R. Breneiser [EMAIL PROTECTED] To: elecraft@mailman.qth.net Subject: [Elecraft] WA3WSJ: Need Info about SMD LED Installed in KX1 Date: Thu, 15 Dec 2005 11:24:07 -0500 Hello all, Has anyone installed a SMD LED for the K6XX CW Indicator in a KX1? If so, could you send me some info about your install and a few pics to put on my website for others to see. 72, Ed, WA3WSJ From: Tom Althoff [EMAIL PROTECTED] To: Elecraft elecraft@mailman.qth.net Subject: [Elecraft] K1 setback... Date: Thu, 15 Dec 2005 14:55:50 -0500 Well...my tilt stand and backlight kit arrived today which I ordered AFTER I had ordered my K1 and some parts to repair my K2/100/AT. My disappointment? For some reason the order for the K1 and the K2 replacement
RE: [Elecraft] K2 Frequency Calibration
No, that's not normal, Samuel. You can get frequencies within 20 or 30 Hz on your K2. For example, my K2 indicates 10.000.01 right now for WWV at 10 MHz. That's an error or 10 Hz. Two things can cause the error: operating procedure and the calibration of the 4MHz master oscillator in the K2. The K2 calibrates the dial readout using the 4 MHz master oscillator on the control board as the reference for a built-in frequency counter. That's why the setup procedure for CAL PLL and CAL FIL requires connecting a probe to the PLL oscillator and BFO. The PLL oscillator frequency is measured when you run CAL PLL, and the BFO is measured when you do CAL FIL. There are a number of ways to set the 4 MHz dead on without any external test equipment. They can be found under the builders resources section of the Elecraft web site (www.elecraft.com). See Notes on Adjusting C22 to put the K2 on Frequency under Construction Notes. Once you have done that your frequency display should be within 20 or 30 Hz across all the bands. It does take proper operating procedure, however. The easiest was to be sure you have a station properly tuned in is to zero beat the carrier with sidetone in CW mode. An alternative, if you can hear subtle changes in musical pitch, is to tune in WWV and adjust the tuning for minimum change of the tone frequency as you switch from USB to LSB. Both of them should produce an frequency error of a few tens of Hz, not more. Ron AC7AC -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Samuel Ramac Sent: Friday, December 16, 2005 2:52 PM To: Elecraft@mailman.qth.net Subject: [Elecraft] K2 Frequency Calibration Can anyone tell me if this is normal? I tried to calibrate C22 using W1AW and found the following W1Aw Freq 1.8175Mhzdelta = 0.07 Khz 3.5815 delta = 0.13 Khz 7.0475 delta = 0.30 Khz 14.0475 delta = 0.61 Khz 18.0975 delta = 0.73 Khz Is the delta at higher frequency higher normal? I have a K2 S#: 1866. with 2.04P firmware.. - - - - - - - - - - - - - - - - - - - - - - - - Samuel C. Ramac [EMAIL PROTECTED] ___ 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] K2 Frequency Calibration
Samuel, I can only add to what Ron has already stated that in addition to setting the reference oscillator correctly then running CAL PLL, you must also run CAL FIL to store the proper BFO values in the EEPROM. Take a look at the K2 Dial Calibration article on my website http://w3fpr.qrprqdio.com for a complete description of the entire process. The reading is more complex than actually doing the procedure. 73, Don W3FPR -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Ron D'Eau Claire Sent: Friday, December 16, 2005 6:42 PM To: 'Samuel Ramac'; Elecraft@mailman.qth.net Subject: RE: [Elecraft] K2 Frequency Calibration No, that's not normal, Samuel. You can get frequencies within 20 or 30 Hz on your K2. For example, my K2 indicates 10.000.01 right now for WWV at 10 MHz. That's an error or 10 Hz. Two things can cause the error: operating procedure and the calibration of the 4MHz master oscillator in the K2. The K2 calibrates the dial readout using the 4 MHz master oscillator on the control board as the reference for a built-in frequency counter. That's why the setup procedure for CAL PLL and CAL FIL requires connecting a probe to the PLL oscillator and BFO. The PLL oscillator frequency is measured when you run CAL PLL, and the BFO is measured when you do CAL FIL. There are a number of ways to set the 4 MHz dead on without any external test equipment. They can be found under the builders resources section of the Elecraft web site (www.elecraft.com). See Notes on Adjusting C22 to put the K2 on Frequency under Construction Notes. Once you have done that your frequency display should be within 20 or 30 Hz across all the bands. It does take proper operating procedure, however. The easiest was to be sure you have a station properly tuned in is to zero beat the carrier with sidetone in CW mode. An alternative, if you can hear subtle changes in musical pitch, is to tune in WWV and adjust the tuning for minimum change of the tone frequency as you switch from USB to LSB. Both of them should produce an frequency error of a few tens of Hz, not more. Ron AC7AC -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Samuel Ramac Sent: Friday, December 16, 2005 2:52 PM To: Elecraft@mailman.qth.net Subject: [Elecraft] K2 Frequency Calibration Can anyone tell me if this is normal? I tried to calibrate C22 using W1AW and found the following W1Aw Freq 1.8175Mhzdelta = 0.07 Khz 3.5815 delta = 0.13 Khz 7.0475 delta = 0.30 Khz 14.0475 delta = 0.61 Khz 18.0975 delta = 0.73 Khz Is the delta at higher frequency higher normal? I have a K2 S#: 1866. with 2.04P firmware.. - - - - - - - - - - - - - - - - - - - - - - - - Samuel C. Ramac [EMAIL PROTECTED] ___ 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] K2 Frequency Calibration
Folks, Ron just pointed out that I had a faulty liink to my website - try http://w3fpr.qrpradio.com instead and excuse my fumble fingers. You can also find a site mirror at http://home.earthlink.net/~w3fpr - sorry for any confusion. 73, Don W3FPR -Original Message- Samuel, I can only add to what Ron has already stated that in addition to setting the reference oscillator correctly then running CAL PLL, you must also run CAL FIL to store the proper BFO values in the EEPROM. Take a look at the K2 Dial Calibration article on my website http://w3fpr.qrprqdio.com for a complete description of the entire process. The reading is more complex than actually doing the procedure. 73, Don W3FPR ___ 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] K2 Frequency Calibration
I've found that using the frequency calibration method in which you switch between LSB/USB when monitoring the tone (tuning for the point at which there is the least difference in the WWV tone between LSB and USB) on WWV at 15 or 20 MHz works very well on my Kenwood TS-930S. Given the fact that the K2 has independent BFO settings for LSB/USB, can this method be accurately used to check the K2's display frequency against WWV? Thanks, Michael N9BDF PS The Amateur Radio Emergency Communications Consistency Act (HR 1478) and the Amateur Radio Spectrum Protection Act (HR 713 S. 537) are in Congress. Please contact your Congressmen to ask for their support of these bills! See the following ARRL link for details: http://www.arrl.org/govrelations/ http://www.arrl.org/govrelations/ ___ 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/elecraftHelp: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 Frequency Calibration
Speaking of zero beating, why not get an AM receiver tuned to WWV and zero beat the tone from the AM receiver to the SSB receiver? That way you can get within fractions of 1 Hz and it's a lot easier than watching a computer screen. I found that I couldn't get the K2 spot on because of the calibration procedure. I got it darn close, though. On Wed, 7 Jul 2004, Don Wilhelm wrote: Michael and all, Yes, because the K2 has independent BFO adjustments for USB and LSB you must know that both BFOs have been properly set before you can do 'tone matching' to determine the correct dial setting. It IS a good method to verify that one has achieved correct calibration, but if the dial calibration is suspect, attempting to get it correct by matching the LSB/USB tones may prove to be an exercise in frustration. If you need to set WWV right on (as when using it to set the reference oscillator with the N6KR method), I recommend using Spectrogram to view the frequency of the transmitted tones - they will alternate between 500 and 600 Hz in alternate minutes. See the dial calibration article on my webpage www.qsl.net/w3fpr for more detailed information. 73, Don W3FPR - Original Message - I've found that using the frequency calibration method in which you switch between LSB/USB when monitoring the tone (tuning for the point at which there is the least difference in the WWV tone between LSB and USB) on WWV at 15 or 20 MHz works very well on my Kenwood TS-930S. Given the fact that the K2 has independent BFO settings for LSB/USB, can this method be accurately used to check the K2's display frequency against WWV? Thanks, Michael N9BDF -- Hisashi T Fujinaka - [EMAIL PROTECTED] BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte ___ 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/elecraftHelp: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 Frequency Calibration
I was wondering if it should be possible to tone match using the SPOT feature on CW against a transmission from my KX1 which my frequency counter claims is accurate... -- It takes brains. It's not like forward, where you can get away with scoring and not play defense... On defense you have to be thinking. ---Chris Chelios David M. Katinsky [EMAIL PROTECTED] From: Hisashi T Fujinaka [EMAIL PROTECTED] Date: Wed, 07 Jul 2004 14:21:40 -0700 (PDT) To: Don Wilhelm [EMAIL PROTECTED] Cc: elecraft@mailman.qth.net, Linden, Mike (BRC-Hes) [EMAIL PROTECTED] Subject: Re: [Elecraft] K2 Frequency Calibration Speaking of zero beating, why not get an AM receiver tuned to WWV and zero beat the tone from the AM receiver to the SSB receiver? That way you can get within fractions of 1 Hz and it's a lot easier than watching a computer screen. I found that I couldn't get the K2 spot on because of the calibration procedure. I got it darn close, though. On Wed, 7 Jul 2004, Don Wilhelm wrote: Michael and all, Yes, because the K2 has independent BFO adjustments for USB and LSB you must know that both BFOs have been properly set before you can do 'tone matching' to determine the correct dial setting. It IS a good method to verify that one has achieved correct calibration, but if the dial calibration is suspect, attempting to get it correct by matching the LSB/USB tones may prove to be an exercise in frustration. If you need to set WWV right on (as when using it to set the reference oscillator with the N6KR method), I recommend using Spectrogram to view the frequency of the transmitted tones - they will alternate between 500 and 600 Hz in alternate minutes. See the dial calibration article on my webpage www.qsl.net/w3fpr for more detailed information. 73, Don W3FPR - Original Message - I've found that using the frequency calibration method in which you switch between LSB/USB when monitoring the tone (tuning for the point at which there is the least difference in the WWV tone between LSB and USB) on WWV at 15 or 20 MHz works very well on my Kenwood TS-930S. Given the fact that the K2 has independent BFO settings for LSB/USB, can this method be accurately used to check the K2's display frequency against WWV? Thanks, Michael N9BDF -- Hisashi T Fujinaka - [EMAIL PROTECTED] BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte ___ 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/elecraftHelp: 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/elecraftHelp: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 Frequency Calibration
Stuart, Yes it used to be (a long time ago). Check the newest information at their website. They do transmit a 440 Hz tone at times too I guess for those musical folks who want to calibrate their tuning forks G. 73, Don W3FPR - Original Message - From: Stuart Rohre [EMAIL PROTECTED] To: Linden, Mike (BRC-Hes) [EMAIL PROTECTED]; Don Wilhelm [EMAIL PROTECTED]; elecraft@mailman.qth.net Sent: Wednesday, July 07, 2004 6:11 PM Subject: Re: [Elecraft] K2 Frequency Calibration Isn't the tone alternation of WWV between 400 and 600 Hz? It used to be. -Stuart K5KVH ___ 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/elecraftHelp: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
