FW: [Elecraft] 4 MHz alignment

[Dan Barker]

Sounds like you are trying to zero beat two tones of approximately 0 Hz.
That can't be done. Regardless of the low-freq rolloff in the various audio
chains, you can't hear below 20 Hz or so.

Try to zero-beat up around 600 Hz, where the audio chain and the ears work
fine.

So, a WWV signal 10000000.000 Hz detected by BFO freq of 10000600.000 makes
a 600 Hz audio tone. If the other signal is at 10000000.125 and about the
same volume, you'll hear the 600 Hz tone ebb and wane once every 8 seconds.
Nobody can hear 1/8 Hz, but most of us can hear 600 Hz, and notice the
volume going up and down.

Dan / WG4S / K2 #2456

<snip> I repeated the procedure with good headphones and was able to lower
the frequency of the beat. <snip> [Hey, shouldn't this be </snip>?]