[Collins] 75S-3B schematic error

[Dr. Gerald N. Johnson, electrical engineer]

Comparing the schematic in the October '63 S3B manual to the October '64
manual (that I wrote), I see the wire from the junction of R50, C153 and
R88 to the AGC line is not in the new schematic. Seems to me either
should work. The older schematic lets the AGC detector push against the
low impedance of the RF gain circuit in the manual RF gain mode and the
time constant network references to the RF gain control bias voltage.

In the newer schematic, the ... aargh, its too messy to describe. I'll
have to make some scans and post them somewhere. That will take a bit of
time because I have some work that needs to be done this afternoon and
evening.

I recommend the October '64 manual, I found that Oct '63 manual that
came with my receiver so badly written that I volunteered to rewrite it
on my own time. All I got out of the deal was a printed copy of the new
manual.

73, Jerry, K0CQ, Technical Advisor to the CRA
-- 
Entire content copyright Dr. Gerald N. Johnson, electrical engineer.
Reproduction by permission only.