Brian, Yes, a 10X probe on the counter may be necessary to prevent loading - that depends on the counter and its input impedance.. If you know your counter is accurate, that will got things right on frequency, but if you have doubts about the accuracy of your counter, use the N6KR method which relies only on the received 'Standard Frequency' signal. All other errors are compensated when using that method - it will produce the best dial calibration accuracy that I am aware of.
For those who have questions about how to do the :"N6KR" method, I suggest you look at my website article on K3 Dial Calibration www.w3fpr.com or search the Elecraft reflector for Wayne's original posting of that method. All I can say is that it works very well, and I use it on a daily basis when aligning K2s. 73, Don W3FPR Brian Denley wrote: > Don: > I used a separate frequency counter but I did struggle with finding a > suitable probe. Direct connection seemed to load down the circuit and > change the frquency slightly. I ended up using a 10X scope probe. That > seemed to work OK. I have read you writeup of the N6KR procedure and I will > give bit a try and report back. Just in case a spent some time calibrating > a couple of my receivers within a few Hz in case I needed to use that > method. It's been a while since my Tek counter has been calibrated. > Brian > > ______________________________________________________________ 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
