[Elecraft] PSK31

[Don Wilhelm]

Chas,

Just one comment -- if the filter SHAPE changes when you change the BFO, you
can conclude that Spectrogram is not showing you the precise shape of the
filter.  You may have to use a finer sampling resolution to see a better
picture -- but then, it probably won't make that much difference anyway, so
we don't have to make a big deal of it except for 'intellectual curiosity'.

73,
Don W3FPR

----- Original Message -----
> .... Then I used a noise generator and Spectrogram to
> align all my narrow filters to this frequency.  The freq I use is 1000
> hz.  You can change it by BFO setting, but when you change the BFO setting
> on FL1, it changes the filter shape too....