From: "Greg" 
Subject: [drakelist] R4B mods


"Greg"  made an utterence to the
drakelist gang
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Hi,
I've recently bought another T-4XC (already had one) , and a R-4B.
I've fixed the R4B , chaged caps, restored switches, replaced the rca ant.connector 
with a UHF connector, fixed some old bag solder points, replaced the old coaxes
with new ones,and now the receiver works...
However I'm wondering if there are any performance tweaks for it, I've checked
http://www.mods.dk/print.php?ArticleId=2549 but surely there must be more 
fixes out there? It's already modified a bit and since it's not 100% original anymore
I might as well tweak it some more.
I also have a question about the RF Gain adjustment, exactly how is it supposed to
function? Positioning it first half of the scale the radion is totally
dead, no audio at all,
around 3/4 of the scale it starts to receive, cranking it up to near max
the audio starts
clipping and it sounds awful...
Are there any testpoints for voltages / bias to check etc?

//Greg

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