[Elecraft] zero beat detector with KX1?

[Michael Babineau]

  "Leigh L Klotz, Jr." <Leigh at WA5ZNU.org> wrote :

 >1. Tune for loudest signal
 >This, coupled with a bit of pitch recognition, is what most hams do.  
It
 >is pretty easy and works unless your KX1 variable crystal filter is set
 >too tightly, say below 500 Hz, in which case the maximum volume point
 >shifts a bit and you need to use RIT to get it back to the filter
 >center.

This is the technique that I use and it works well if you set the
variable filter to about 500 hz, no less.

Leigh is correct that if you tighten the filter down too tight
the passband center tends to shift down and this no longer
works (route the audio output of the rig through Spectogram
and you can clearly see this).

I have found with a bit of practice I can nail the zerobeat
right on almost everytime using this technique.

Michael VE3WMB