Luca, The transmit offset should work correctly - it is automatic in the K2, the offset is computed by the firmware. To be off by the amount of the sidetone is unusual. The usual situation is when the transmit frequency error is two times the sidetone pitch, and that is caused by having the passband on the wrong sideband.
How are you determining that the transmit frequency is shifted? The K2 displays the carrier frequency, and some others may display the tone frequency. If you are measuring the K2 output with another receiver, that is something to be concerned about because you may not be able to depend depend on the dial reading of the other receiver. If you have not calibrated your K2 dial (see the K2 Dial Calibration article on my website www.w3fpr.com), then you cannot depend on the K2 dial reading either. To check the transmit frequency using another receiver, use the following method - which ignores the precise dial reading on both the K2 and the other receiver by matching two signals.. 1) Tune the signal source on the K2 so the pitch matches your 600 Hz sidetone pitch. 2) Tune the same source on the other receiver. 3) Now use the K2 to transmit into a dummy load - the other receiver should hear the K2 at the same frequency and pitch as the signal source was heard on that receiver. 73, Don W3FPR uniroma wrote: > Don > thanks for your quick reply. > May be I did'nt get something. > To avoid mistakes, I adjusted the sidetone pitch to 600hz than I applied > exactly the manual procedure setting the suggested filter bandwiths and bfo > values. Actuallly the receiver frequency is fine centered for all filters. > If the manual suggested values don't work well in tx mode, which is the > right value to apply? > And, if I change again the bfo values, does the rx freq shift again? > luca > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
