[Elecraft] USB FL4 problem after installing BFO and filter xtals

David A. Belsley [email protected]
Fri Nov 15 16:21:03 2002


John:
  Go into CAL FIL and redo the BFO setting for FL4 U to put it on the upper 
side band.

best wishes,

dave belsley, w1euy

--On Friday, November 15, 2002 9:53 AM -0700 John McClain 
<[email protected]> wrote:

> I am very pleased with the results after installing the BFO and filter
> xtal mods in K2 #2569 except for one little problem.  USB FL4 wants to
> receive the lower sideband instead of the upper one. The waveshape on
> Spectrogram looks great but it is on the lower sideband.  I can tune
> in a USB station and then got to CAL FIL where I step through the 4
> filters while listening to the audio and watching the waveshape.  I
> get great audio on filters 1, 2, and 3 but when I get to 4, I hear the
> station but it sounds like I am listening to LSB on a USB station.
> While there I can adjust the BFO frequency but it never seems to move
> over to the "other side".  I have checked all of the xtals and their
> solder connections on the SSB adaptor but I can see nothing wrong.
> Anyone have any ideas?
>
> John
> K7SVV
> [email protected]
> K1 #1378, K2 #2569, SST 20, Rock Mite 20, Rock Mite 40, Nor'Easter
>
>
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----------------------------------
David A. Belsley
Professor of Economics