lexderr said:
I have been reading a book called "Bench Test Circuits for
Surveillance and Countersurveillance Technicians" by Tom Larsen and
have been trying to locate "wide-band-width 5GHz range Germanium diode
with a lover than normal forward voltage to use in a bug dectector
listed in his book. Anyone got any ideas?
Thanks
1N5711 Schottky signal diodes are used for VHF and UHF work and are
available on Ebay for fairly cheap. But any old 1N60 or other low
capacitance video detector should work somewhat. The leads on the
diode can act as a dipole antenna and pick up wavelengths that are up in
the GHz range.
ALso you might consider a microwave oven leakage detector. They're not
as sensitive, but then you could put additional circuitry into one to
boost the sensitivity. Also radar detectors for the car.
If you're serious about that stuff, then you should check out some of
the websites that offer that kind of equipment. They want some serious
money for this stuff.
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