[Collins] 75A-2 new to me

[Dr.Gerald Johnson]

The low s-meter could be from leaky AVC bypass capacitors and time 
constant capacitors. And from weak front end tubes.

Vintage receivers that tried to use paper capacitors for cathode and 
screen bypass capacitors in the RF and first mixer tend to have low gain 
on the higher bands. Sometimes replacing the papers with disc ceramics 
can make those states work much better. short leads are important at 
30 MHz.

It's possible that wiring around the NBFM adaptor is a product detector 
or an interface for one.

Is there no schematic on the CCA manuals site?

73, Jerry, K0CQ, Technical Advisor to the CRA

-- 
Entire content copyright Dr. Gerald N. Johnson, electrical engineer.
Reproduction by permission only.