[Elecraft] Peaking L34 (IF amplifier)

[David C Dawson]

On Sat, Nov 18, 2006 at 07:32:44AM -0500, Don Wilhelm wrote:
> David,
> 
> Yes, the peak is VERY broad.  You may have to connect an AC voltmeter across
> the speaker connector to find the peak if you cannot discern it by ear.  The
> peak is normally 1 to 1 1/2 turns down from the top of the can.  Be certain
> you are using CW mode.  If your peak is right at the top of the can, check
> the value of C182.
C182 is a fairly big yellow disk ceramic marked '181', if that is
correct, then I guess I don't have a problem?

I have a software audio analyser (xanalyser) which I could use to find
the peak and I have a DMM which should measure audio frequencies just
fine (It has a range of 0 - 4MHz as a frequency counter).

Which would be preferable?
> 
> 73,
> Don W3FPR
> 
> > -----Original Message-----
> > First, I took Don Wilhelm;s advice about checking soldering and re-did
> > anything I could find that looked dubious.
> >
> > Now, I've come to peak the IF amplifier.
> > It seems to me that a signal just gets louder when I turn the slug
> > counter-clockwise until it hits the stop and quieter turning the slug
> > clockwise. If there was a peak, it was a really shallow one.
> >
> > I followed the instructions and could hear the internal birdie quite
> > well, so peaking should not have been difficult.
> >
> > Any suggestions, please?
> > Thanks.
> > --
> > David Dawson
> >
> 

-- 
David Dawson

A strong conviction that something must be done is the parent of many
bad measures.
                -- Daniel Webster