Rich,  Look at this site it may help
you.

http://www.science-workshop.com/

Derward Myrick

----- Original Message ----- 
From: "Rich Graziano"
<rgrazia1@rochester.rr.com>
To: "Microcontroller discussion list -
Public." <piclist@mit.edu>
Sent: Monday, June 05, 2006 2:21 AM
Subject: Re: EE Spectrum Analyzer
circuit


> Thank you for the helpful information,
Vasile.  I appreciate it.  I do have
> a Hewlett Packard Spectrum analyzer, a
Tektronics Spectrum analyzer and
> another in my lab for actually looking
for harmonics, transients, etc.  But
> I want to put one in an instrument I
am designing and I was hoping to find
> someone who has already designed and
built one as a guide line that I could
> follow.  Thank you.  You are the
recourse I was hoping for.  I was hoping
> also to find some receiver components
and IF components to design into the
> overall circuit.  I have see the front
end for receivers in small metal
> boxes in TVs and Radios.  I built some
oscillators but the sinewave
> distorted over a range of 10MHz.  I
think I need to readjust the LC ratios.
> That will probably lower the Q but it
may not matter if selective sharp
> resonance is not a factor.  I find
that theory only works after you adjust
> it by trial and error and error and
error :-)
> I am very grateful for your help.  You
have anticipated several of my
> questions. Thank you.
> Regards
> Rich

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