T-R switching

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From: ASIRENE@v9001.ntu.ac.sg
Date: Thu Mar 17 1994 - 20:06:46 EST


Hi,

        I've been wondering about the T-R switching process and could not help but
wonder if the slow mechanical relay will alter the keying waveform's leading and
trailing edges. Consider this, the XCVR uses T-R with full QSK, then the RF Amp
(external) also uses mechanical relay for T-R. Suppose the RF Amp is QSK, won't it
afffect the leading edge somewhat? Are external RF amps usually full-QSK T-R
switching?

73,
Daniel

p.s. I am thinking about the QAMP-20 from Ramsey Hobbykits


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