QRP Station > Builder's Corner
UHF Crystal Radio
vu2nan:
Yet another!
The terminal block arrangement made it convenient to replace the folded dipole with a full wave loop.
Likewise with an AWX antenna.
Results were as good as with the folded dipole.
73,
Nandu.
vu2nan:
The latest update!
A second Yagi Beam was then rigged up, with another diode providing the return path for the audio, instead of the coil.
The signal strength was not as good. During trials, a chance shorting of the second diode gave a considerable increase in signal strength.
The diode and capacitor were hence discarded. Performance of this single-diode UHF crystal radio is quite good.
73,
Nandu.
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