Posted by
Don Wilhelm-3 on
Aug 20, 2006; 2:30pm
URL: http://elecraft.85.s1.nabble.com/K2-CW-Filter-Loss-tp393152p393154.html
Tom,
It should shift exactly by the amount of your sidetone pitch. That is the
way the CW offset works - there is no offset on LSB or USB, but CW is offset
so you can read the frequency of the signal on the K2 display, but be able
to hear it by placing the BFO off to one side or the other by the amount of
the sidetone pitch.
The K2 always displays the frequency of the carrier. If you want to figure
it out, you might relate it easiest to a direct conversion receiver -
listening to SSB, you can hear the voice if the receiver is tuned to the
suppressed carrier frequency, but in CW if you tune to the carrier
frequency, the signal would be 'heard' at zero Hz. The receiver must be
tuned off to the side of the signal to hear it at a sidetone pitch. The K2
does that automatically (and is a superhet instead of a DC receiver), but
the principle is the same.
73,
Don W3FPR
> -----Original Message-----
>
> This is probably a stupid question - the answer to which I should probably
> know - but I just can't see it.
>
> I have (I think) properly adjusted my K2 (4991) using Spectogram.
>
> If I tune in a CW signal with the mode switch in U or L, and then
> mode to C,
> the signal shifts about 600 Hz.
>
>
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