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http://www.amsat.org/amsat/articles/g3ruh/109a.txt
I need about 60 kHz bandwidth at the IF to
pass a 38k4 signal.
The first filter in the receiver is just a
single crystal, which I think I can leave in
the circuit as is.
The second filter (FL2) in the receiver is,
I think, a CFW455E, which has a bandwidth of
about 15 kHz. This is too narrow for 38k4.
Since this is a "no budget" ham radio project,
can I get something that works if I replace the
CFW455E filter with 0.001 uF capacitors? I'm
not exactly sure how to do this since the
filter has *three* pins.
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