Re: [Elecraft] K2: Help, I messed up the dial calibration!!!

2008-07-16 Thread David Woolley
Steve Kallal wrote: The part that wasn't clear to me at first, was the need to redo CAL PLL & CAL FIL after EACH C22 adjustment. I read so many comments on the C22 doesn't control the dial calibration, it only controls the frequency counter used in the dial calibration. Once you've done the

Re: [Elecraft] K2: Help, I messed up the dial calibration!!!

2008-07-15 Thread Don Wilhelm
Steve, When you can receive WWV and WWVH at the same time, that is handy because there is a tone both at 500 Hz and 600 Hz on each minute. WWV and WWVH do not transmit the same tones at the same time. Glad to hear that you are now up and running and are about as close as you can expect. Yes

Re: [Elecraft] K2: Help, I messed up the dial calibration!!!

2008-07-15 Thread Steve Kallal
Don, I finally got to within 10 to 15 Hz at 10 MHz now. I decided to use MixW for the 500/600 Hz WWV tones. It works really well for that part of the calibration. I had misread your web site. You do endorse the N6KR method. I did find the WWV Signal Format web page. Out here on the west coas

Re: [Elecraft] K2: Help, I messed up the dial calibration!!!

2008-07-15 Thread Don Wilhelm
Steve, Yes, the "4 MHz" reference may have to be set a few Hz different than exactly 4.0 MHz to calibrate the dial accurately. The best method I know of is to feed the K2 audio into a computer running Spectrogram. This method compensates out any difference between 4 MHz and the actual r

Re: [Elecraft] K2: Help, I messed up the dial calibration!!!

2008-07-14 Thread Steve Kallal
Don, Sorry I didn't fully read your comments before my first reply. Could you briefly explain how you calibrate with the 500 & 600 Hz markers? Can it be done in real time while tweaking C22? I can't do it. I have C22 set exactly to 4 MHz via the 20 MHz WWV method, with a perfect zero beat. Ye

Re: [Elecraft] K2: Help, I messed up the dial calibration!!!

2008-07-14 Thread Steve Kallal
Don, I got back it in the ball park. I read the W5YR instructions on your web site, about the 5th harmonic of 4 MHz of 20 MHz. Fortunately WWV on 20 MHz is still coming in on the west coast, but fading out. After all this work, I am back where I was except about 40 Hz low for zero beat on 10

Re: [Elecraft] K2: Help, I messed up the dial calibration!!!

2008-07-14 Thread Don Wilhelm
Steve, Your steps are correct. It sounds like you are off by the amount of your sidetone pitch. Were you receiving WWV in LSB or USB mode? If you used CW mode, that would explain the difference. Are you quite certain that you tuned WWV accurately? Do not 'set the dial at 10,000.00', but i

[Elecraft] K2: Help, I messed up the dial calibration!!!

2008-07-14 Thread Steve Kallal
I was trying to calibrate my K2/100 and had it within 10 Hz according to WWV 10 MHz. I should have left it alone. Now it is off by about 700 to 800 Hz on 40 meters. Ouch! Here are the steps I did so far: 1. I set the C22 trimmer on the Control Board by the N6KR method at http://w3fpr.qrpradio