[Hammarlund] IF bandwidths?

[peter markavage]

Why not just build a simple 1 tube (or solid-state) mixer. 21.400 - (1st
IF Frequency) = Mixer Frequency
Pete, wa2cwa

On Wed, 12 Oct 2005 20:53:51 +0000 "Eugene Hertz" <ehertz at tcaf.org>
writes:
> Hello all,
> 
> I am undertaking a project (probably foolishly) to adapt a 21.4mhz 
> panadapter for use with various hammarlunds, specifically sp600, 
> hq140x, hq129x.  The idea is to use a balanced modulator, and no, I 
> havent figured it all out yet (and it may not even be possible).
> 
> In trying to figure it all out, I was wondering if anyone has ever 
> made any IF bandwidth measurements of these receivers at their 
> widest points in the circuits, before filters.  
> 
> Thanks
> Eugene
> 
> 
> 
> 
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