Darrell Bellerive wrote: > Please expand on this. I have never used a PSK application, but how would it > detect the subcarrier is exactly at 100 Hz? I suspect the software is using > the soundcard clock as a reference and that wouldn't necessarily be very > accurate.
... but it'll be within a few percent, surely, and that means you'll be within a few hertz of 100Hz? The K2 tuning steps are likely to be a lot bigger than that? > Seems that the K2 can be set very exactly using Wayne's method > (http://www.elecraft.com/Apps/K2%20C22%20Adjust%20App%20Note.pdf) but it > requires properly zero beating WWV. It'll still be only within about 30Hz, won't it? > Wayne suggests just listening for zero beat, one should be able to get within > about 15 Hz. ... which I'd have thought is well within the soundcard clock accuracy too. > What tricks have others on the list found to tune WWV to within 1 Hz or less > without expensive professionally calibrated test equipment? I think you'll find day-to-day temperature variation, and capacitative/inductive effects of nearby objects probably cause more variation than that :-) -- "Nosey" Nick Waterman, G7RZQ, K2 #5209. use Std::Disclaimer; [EMAIL PROTECTED] Confucius say: Man who fight with wife all day, get no piece at night _______________________________________________ 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
