Quote:
Originally posted by wvsaz
Rob,
These are from 1952. I have repaired a couple of them and they are well made and fairly simple inside. The most likely failure is the oscillator tube. Right after that comes the mixing diode. It can be replaced by a 1N82A.
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Bill,
That 1N82A is a really good UHF diode. I built a field strength meter for 2.45 GHz (microwave oven leakage detector) and a 50uA meter, the diode sits in the focal point of a curved metal plate (cylinder parabola) at the middle of the dipole antenna. It is extremely sensitive! A safe oven can pin this to the end at 6 feet.
Rob