[Elecraft] About the signal-to-noise adjustment method for L34

[Don Wilhelm]

Guy and all,

You are correct about the precautions - I assumed and failed to mention that
L34 adjusted with the 7 MHz birdie should be done with a narrow filter in CW
mode (I believe that is still specified in the K2 manual - at least it is in
my Field Test manual).

73,
Don W3FPR

----- Original Message -----

> A caution on using signal to noise on the weak 7 MHz birdie to adjust
> L34.
>
> (snip)
>
> If one uses the SSB settings for this measurement, it may appear that
> the signal to noise is changing because L34 changes the shape of the
> SSB passband, a fact that would be lost on anything other than a
> graphic presentation. HOWEVER...
>
> With ANY shape to the SSB passband, if the birdie is tuned to occupy
> the highest spot on the passband curve, the same 31 dB is observed as
> seen on the CW settings.
> (more snip)