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Old 05-21-2018, 04:05 PM
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zeno zeno is offline
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Join Date: Mar 2013
Location: New Hampshire
Posts: 4,672
RF bias is RF AGC. Changes the voltage to the RF amp
at the base or gate if its a FET. Usually turn til the snow
just goes away. Too much causes jitters. IF AGC controls
are rare in SS sets. IIRC the first Zenith flat chassis ( C-line)
had both.
You can home brew a great DGS coil but I dont remember how
many turns of wire so check the internet & old books. Just
be SURE to use a spring loaded on/off switch. It will brew
up if you forget to turn it off.

73 Zeno
LFOD !
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