KF5JRV > TECH 15.02.17 12:17l 13 Lines 444 Bytes #999 (0) @ WW
BID : 10454_KF5JRV
Read: GUEST
Subj: Xtal Radio Impedance match
Path: IZ3LSV<IW2OHX<UA6ADV<CX2SA<N0KFQ<N5TTI<KF5JRV
Sent: 170215/1115Z @:KF5JRV.#NWAR.AR.USA.NA #:10454 BPQK6.0.13
Crystal radio circuit employing input transformer
In order to ensure the maximum signal transfer from one circuit to another it
is necessary to match the impedance. In some crystal receiver circuits this was
achieved simply by having an additional coil on the same former so that the
often lower impedance of the antenna could be matched to the higher impedance
of the crystal radio receiver itself.
73 Scott KF5JRV
KF5JRV.#NWAR.AR.USA.NA
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