[Elecraft] K2 IF Alignment Question
Don Wilhelm
w3fpr at earthlink.net
Sat Jul 1 10:14:34 EDT 2006
The 'peak' on L34 is very broad and difficult to discern. It ideally should
be adjusted for the best signal to noise ratio.
If you use the 7000 KHz 'birdie' (no antenna connected), you can usually
hear the signal peak especially if you listen for the noise to minimize. A
Spectrogram display will also show it if you look for the maximum signal
amplitude that is also consistent with minimum noise.
Yes look first for the peak at the 1 to 1 1/2 turns from the top, but if you
are unable to discern it, just set the slug at 1 turn from the top and let
it go at that.
73,
Don W3FPR
> -----Original Message-----
>
> Are we speaking of the same L34? Mine "peaked" at nearly the top,
> not a turn or so from the top. As I remember I was peaking for the
> loudness of the noise; nary a signal around.
> de Joe, aa4nn
> -----------------------------------------------------------
> > You are not adjusting for the peak, you are adjusting for the maximum
> > signal/noise. It does not occur at the peak signal. Unless you are using
> > Spectrogram or some such, it is a trick to do by ear.
> >
> > That said, if your best S/N is at the top, I haven't a clue if
> you have a
> > problem<g>.
> >
> >
> > The peak when adjusting L34 during IF alignment is at the top rather
> > than
> > the l to 1 1/2 turns in mentioned in the manual. Has anyone else
> > encountered
> > this?
> >
> > 73 Steve K8IDN
>
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