[RTTY] AGC: on or off?

Phil Florig W9IXX at arrl.net
Tue Jan 31 11:48:26 EST 2006


Hi all,

Tnx for all the great information here.

I have used basically the same setting as discussed here.

One caution that comes to mind, on the suggestion below, is that
if you are using the fixed audio out on the rear panel (Kenwoods here),
the audio level changes with adjusting the RF gain control.  I believe
that the ICOM also changes with the RF control..  So as you reduce the
RF gain the level reduces at that "fixed" output.  I leave the RF gain
to max here on RTTY.

Just a comment and agn tnx to all for the great comments/suggestions here.

73  Phil   W9IXX


At 11:02 1/31/2006, you wrote:
>Having read all the replies to this one, I'm not sure I agree with using FAST
>AGC (or at least the fastest) for RTTY.  I have found that I copy better 
>with a
>medium-fast range AGC.  In the PRO III I have my AGC set to Medium (default
>value of .5 second) and it seems to work better than when using FAST (default
>value of .1 second).  I haven't experimented with other settings, but I will.
>In the '870 I use manual AGC and have the control set to the 3 o'clock 
>position
>which is on the fast side but not the fastest.
>
>I have not experimented with turning AGC off while backing off the RF gain.
>Since I back off the RF gain when using the TPF in the PRO III and have 
>started
>backing off the RF gain in the Kenwood, I will try this.
>
>Don AA5AU

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Philip Florig           e-mail:pflorig at ieee.org
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