[Elecraft] [K2] Displayed frequency question.

[Gil G.]

Hello,

When I listen to a station transmitting using CW on, say, 7030 (zero-beat), my displayed frequency is 7029.93.
When I transmit, the reverse beacon stations show me as being right on 7030 while my displayed frequency is 7029.93.
When I listen to SSB, station usually do sound perfectly clear at a displayed frequency 70Hz below their advertised frequency (nets).

Should I change my displayed frequency? To what? Am I off?
If I move the BFO frequency a bit, would I need to realign my filters?

Thanks!

Gil.
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PGP Key: http://keskydee.com/gil.asc