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Telamon · January 17th 07, 02:05 AM posted to rec.radio.shortwave

In article ,
(Michael Black) wrote:

"N9NEO" ) writes:
Greetings,

I have just got a sony ICF sw7600GR and it is a very nice radio. The
sync detector seems to take care of a lot of the distortion, but the
audio continues fading in and out and is quite annoying. Could the
fading be mitigated to any extent by using another stage of agc? I am
going to be doing some experiments with the 455kc if out on my Red Sun
RP2100 whenever it gets here. Detectors, filters, SSB, etc... I thought
that along with other experiments I might want to try some outboard
agc.

Synchronous detectors have never been about dealing with fading. They
are about ensuring there is enough "carrier" to beat the sidebands down
to audio.

Snip

Sync is for selective fading specifically when the carrier fades but
most of the side band information is still there. When the fading is
wide and covers the entire channel it can not help.

--
Telamon
Ventura, California