[Elecraft] xmit and receive frequencies different

Ron D'Eau Claire rondec at easystreet.com
Mon Aug 22 15:44:43 EDT 2005


Hi, Melin:

Make sure you do NOT have either RIT or XIT enabled!  That will cause
exactly the symptom you are experiencing .

Since the same BFO and Local Oscillator is used for both transmit and
receive, those frequencies will be identical. The only thing that a
misalignment in CAL FIL should cause is a shift in the apparent bandpass,
not a shift in frequency.

Since FL1 is *always* used for transmit, if you select FL1 for receive too
nothing at all should change between transmit and receive - not even a shift
in bandpass.  

Ron AC7AC

>
> My K2 (2631) with KSB2 doesn't transmit and receive on the same 
> frequency. There's about a 70Hz difference on lower sideband and 50Hz 
> on upper.  The
> transmit frequency is always lower than the receive  frequency.
>
> Carrier supression is great, transmit audio sounds good, and I'm 
> within no more than 100Hz away from the suggested frequencies.  The 
> package came with
> 3.6Khz markings.
>
> I've run Cal PLL a number of times.  The VFO is accurate and  linear.  
> It just won't transmit and receive on the same frequency.
>
>



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