[Milsurplus] QST articles ~1947 onward on the BC-348 - have questions

[John Hutchins]

Group
First happy holidays to all !
I had some spare time was investigating  ANL options to tack into the 
BC-348-R  - previously hacked.   No not going to add a panel switch.
So reading up on ANL circuits.  In my web searches  I found some 
references to QST articles on the BC-348 that I would like to have some 
copies of:
    QST Servicing crystal filter for the BC-348?
    QST Automatic Noise limiter for the BC-348?
Not sure of the dates?

Now back to my ANL circuits; the BC-348-R has the AVC/AGC circuit feed 
by #38 a 75 pF cap to a separate anode VT-93, 6B8.  My reading indicates 
that AVC/AGC circuit could be used to suppress noise; but if that signal 
were delayed by 90 degrees this would not be a good option.

Questions set:
       1.  The 75pF would limit the frequency available to the AVC/AGC 
detector to > 20Khz ? 2.319k Ohms @ 915Khz
       2.  Does this capacitor #38, 75pF, delay the signal to the 
AVC/AGC detector by 90 Degrees when compared to the Audio detector path?
       3.  If the answer to 2. is affirmative, signal is delayed, then;  
Any noise audio clipping will have to be done in the Audio path to 
adequately clip any pop's ?


Ho Ho Ho -
Hutch