[Elecraft] Rig drift

[Ron D'Eau Claire]

Golly, Earl, are we talking about the same thing?

The function of the tuning control to put the desired signal in the IF
passband. If it moves outside the passband because my K2 drifted or the
other station frequency drifted, I adjust the tuning control to put it
back in the IF passband.

Now it's true that if it is the K2 BFO that is drifting, the note you
hear on CW won't be exactly the same as you have your sidetone set for.
But the signal will be set in the IF passband just fine in any case if
you adjust the tuning. 

I suggested RIT or SPLIT as ways to do that during a QSO without
changing the transmit frequency, that's all.

Of course doing that could cause you to be off the center of the audio
filter passband - if you are using the audio filter set to a narrow
bandwidth. 

Ron AC7AC

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The problem is drift (BFO or PLL, or a combination of both) where, if
you use Spectrogram to look at a received signal at the pitch your SPOT
is set at, the signal is outside of the filter passband when cold and
drifts into the passband as the temperature increases (and drifts out
the other side of the passband if the temperature continues to
increase).  Using RIT has nothing to do with this.

This problem has been also mentioned by others on this reflector.

73, de Earl, K6SE _______________________________________________