Re: [Elecraft] [K2] VFO alignment & display accuracy

2014-04-16 Thread Don Wilhelm
Sean, Check the value of C21 - if should be a 33 pF disc ceramic capacitor. If you put the blue capacitor labeled 331 into the C21 position, the 4 MHz reference frequency will be too low and you will not be able to get the counters to match. Your BFO and VFO frequencies are within the realm

Re: [Elecraft] [K2] VFO alignment & display accuracy

2014-04-16 Thread Sean Michael Johnston
Don, Thanks for the quick response. I gave this a try and went the other direction with the counter. Now after running PLL, my offset is further off (120Hz). I am still not able to get the BFO and VFO counters to line up. Turning the other direction put me closer the 120Hz offset above. I have

Re: [Elecraft] [K2] VFO alignment & display accuracy

2014-04-16 Thread Don Wilhelm
Sean, If the BFO (TP2) is at 4913.05 and the VFO (TP1) is at 14912.97, then the frequency read at TP1 must come *up* in frequency by 9 to 10 Hz. In other words, the count *must* rise. From what you said, the count will rise above 14912,97, and that is exactly what you want. The count for the V

[Elecraft] [K2] VFO alignment & display accuracy

2014-04-16 Thread Sean Michael Johnston
I have been trying to get my VFO aligned by adjusting C22 based on the methods recommended by N6KR and as posted in the app notes on the Elecraft website - http://www.elecraft.com/Apps/notes_on_adjusting_c22.htm. I can never get it closer than 70 Hz. I am using the 10MHz WWV signal for reference