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KF5JRV > TECH 02.02.17 13:24l 17 Lines 558 Bytes #999 (0) @ WW
BID : 9752_KF5JRV
Read: GUEST
Subj: Basic Xtal Radio
Path: IW8PGT<IR2UBX<IW2OHX<UA6ADV<CX2SA<N0KFQ<KF5JRV
Sent: 170202/1215Z @:KF5JRV.#NWAR.AR.USA.NA #:9752 BPQK6.0.13
Basic crystal radio circuit
The circuits for crystal sets could be very simple. Some simply employed a
tuned circuit, a crystal detector and a pair of headphones.
The most basic form of crystal radio circuit consisted of just four components:
inductor and variable capacitor (to form the tuned circuit); diode (to act as
the envelope detector); and headphones.
This simple radio, whilst easy to make did not provide any matching for the
antenna and therefore the performance would not have been as good as some.
73 Scott KF5JRV
KF5JRV.#NWAR.AR.USA.NA
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