[Elecraft] Display frequency calibration

[Don Wilhelm]

Zero-beat is *not* zero frequency, so zero beat can be heard even when 
the audio response drops off in the lower range.

When there are two tones closely spaced in frequency, they will produce 
a third tone which is teh difference frequency between the tones.  That 
third tone will modulate the amplitude of the other two tones - sort of 
a wow-wow-wow type sound.  It is not unique to radio, it happens with 
musical instruments too.  Those who have tuned a stringed instrument 
should be familiar with zero beat.

Zero beat is the point where the wow-wow-wow sound is as slow as you can 
get it.

73,
Don W3FPR
On 10/5/2012 12:46 AM, K7WIA wrote:
> Just another note:    My K3 will not produce a audio tone below 200 cycles in
> the speaker.. ( could be my ears) so finding a zero beat is impossible as I
> could be off that much above or below WWV trying to callibrate that way.....
>
>