03-02-2006, 09:00 AM
Most probably. Cap 15 is the RF tube plate bypass cap on the B+ line.
Caps 6 and 13 are on the AVC buss. Cap 6 is for bypassing and cap 13 is the time-constant/filter cap in conjunction with resistor 34.
They "filter" out the audio freqs on the AVC buss which is only the DC component of the deteced signal. Too little filtering (or too short a time-constant) lets the AVC buss "bobble" up and down in time to the audio causing wild gain shifts making the detected signal jumpy which again makes the AVC buss even more jumpy, etc....
Caps 6 and 13 are on the AVC buss. Cap 6 is for bypassing and cap 13 is the time-constant/filter cap in conjunction with resistor 34.
They "filter" out the audio freqs on the AVC buss which is only the DC component of the deteced signal. Too little filtering (or too short a time-constant) lets the AVC buss "bobble" up and down in time to the audio causing wild gain shifts making the detected signal jumpy which again makes the AVC buss even more jumpy, etc....
Chuck Schwark,
The Philco Repair Bench
[Image: http://www.philcorepairbench.com/images/philog3tiny.gif]
http://www.philcorepairbench.com
