Bob Werth, down in St. Louis, Mo. had several 70MHz SAW filters on hand; you
might want to contact him.
Pete Gianakopoulos KE9OA
> The 70 MHz is just about where you would want it.
> I'd use a simple bandpass filter, followed by an inexpensive
> DBM to bring the IF down to the 10.7 MHz range where you
> could use cheap ceramic and LC filters to set the bandwidth.
> Do you know the LO range, and whether if it is high or low side
> injection? You will have to do some modification of the tuner's
> frontend, and perhaps the VCO, to get HF/VHF coverage.
> > I was given a older (circa '92) satellite receiver (working when last
> > used) that has a 950-1450Mhz varactor tuner in it. Questions:
> > Given the variety of homebrew spectrum analyzers using CATV and UHF
> > varactor tuners, is it possible this 950-1450 Mhz tuner has some
> > promise?
> > Would it be terribly difficult to use the 70Mhz IF output in such a
> > design without special support chips?
> > Thanks in advance.
> > Brian