I've been trying to figure out the Corsair II AGC circuit on the IF/AF
Board (manual p3-17). I was hoping that someone out there could
either confirm or correct my analysis:
1. D6-D9 form the AGC Detector feeds AGC amp U2B-5 and charges time
constant capacitor C34 through R45
2. Q8/Q9 form the hang circuit and discharges C34 through R54 when Q9
is biased off.
3. The AGC switch (via connector 92, "AGC OFF/AGC TC") functions to:
a. turn off AGC by grounding U2B-5
b. set slow AGC by enabling the hang circuit by grounding C33
c. set fast AGC by disabling the hang circuit by leaving C33 unconnected
Tnx/73,
Barry N1EU
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