[Yaesu] FT1000D AGC -off behaviour

Tue, 26 Nov 2002 01:19:50 +0000

> (Geez, I wish this reflector sent everyone's reply back to the whole list).

   My computer does as I instruct it, not as someone else wishes.

> Thanks for the advice, guys, but I know what AGC is and what it does.  My
> question was regarding the *complete disappearance* of audio on strong
> signals.  I would expect all the stages would be overloaded and producing
> heavily distorted output....but....what happens is that audio disappears
> completely, but only for S9+ sigs.  Has anyone tried this on their FT-1000D?

   It is called `blocking' and it is normal.  It is because the lowest value of
IF signal (point of maximum negative modulation) at the am detector's input is
higher than the peak value that is normally received.
   Did you know that?  Listening to a 50,000 Watt transmitter in your county
instead of a 100 Watt signal from some other state does that.
   Turning the AGC control from automatic (on) to manual (off) implies that you
will be controlling the RF and IF gain manually.

        73 (= Best Regards) de: Ron [email protected]
     100% Slack. since July, 1997 (still free!) SENT D&T are UTC
        Visit my HAM Web SITE at: http://www.qsl.net/ka4inm