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| Ron Stone, GW3YDX - EMail ron@gw3ydx.demon.co.uk
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Chaps
I would never change from my TS930 were it not for the lack of RS232.
Has anyone out there done some hard faced CW contest A/B tests with
these two radios. I hear that the 940 is not nearly as good as the old
930, but my database on this is very small (just one or two local
opinions) and I would appreciate more information.
Seems to me that putting FM on the 940 and changing the roofing IF was
a change for the worse.
Any info in response would be most welcome.
73
Ron
>From flanders@GroupZ.net (Jerry Flanders) Tue Jan 23 02:19:09 1996
From: flanders@GroupZ.net (Jerry Flanders) (Jerry Flanders)
Subject: AGC WITH OUTBOARD AUDIO FILTER?
Has anyone tried tacking a modern DSP audio filter onto a receiver's
output and then patching the receiver's AGC voltage to a control
voltage derived from the audio output of the DSP filter? This way the
AGC would be controlled only by the sigs making it through the DSP
filter.
I hate to use outboard (audio) filters because nearby strong sigs
inside the IF passband can reduce RF gain even though those sigs might
not make it through the audio filter. I don't want to give up AGC.
Seems like this should be do-able by you guys that know which end of
the soldering iron to hold on to.
I hate to buy an expensive DSP filter and then find a major flaw in
the idea. Any thoughts on this?
Receivers that I might do this to: ICOM 751 (have schematic) and/or
Kenwood R-599D (don't have schematic). Don't have the DSP Filter -
recommendations?
Jerry Flanders W4UKU South Carolina
flanders@groupz.net
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