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Philco 38-116 Question More Questions
#21

Played with it a little today with monitoring the plate voltage of one of the 6J5 triodes in the output of the discriminator circuit and indeed, working the two tuning caps does change the plate voltage on the tube. It will go from 0 to about .3V DC and will peak. Not certain where I should be testing the "output" per the directions. Does the same with or without modulation. Much quieter without modulation. As I recall, hooking up to the speaker, don't see any change. Still confused as to how I should be troubleshooting this but then again, that's normal for me.Icon_crazy Still not certain as well as to where to monitor the adjusting activity and with or without modulation. With modulation and monitoring the speaker output on my VOM I really see no change in the output while adjusting the padders.

Jerry

A friend in need is a pest!  Bill Slee ca 1970.


Messages In This Thread
RE: Philco 38-116 Question - by jerryhawthorne - 01-26-2013, 07:17 PM
RE: Philco 38-116 Question - by Phlogiston - 01-26-2013, 08:30 PM
RE: Philco 38-116 Question - by Ron Ramirez - 01-26-2013, 09:44 PM
RE: Philco 38-116 Question - by jerryhawthorne - 01-26-2013, 10:12 PM
RE: Philco 38-116 Question - by jerryhawthorne - 01-26-2013, 10:34 PM
RE: Philco 38-116 Question - by jerryhawthorne - 01-29-2013, 12:03 AM
RE: Philco 38-116 Question - by Phlogiston - 01-29-2013, 04:16 AM
RE: Philco 38-116 Question - by jerryhawthorne - 01-29-2013, 02:16 PM
RE: Philco 38-116 Question - by jerryhawthorne - 01-31-2013, 09:16 PM
RE: Philco 38-116 Question - by Phlogiston - 01-31-2013, 11:04 PM
RE: Philco 38-116 Question - by jerryhawthorne - 02-01-2013, 12:10 AM
RE: Philco 38-116 Question - by Phlogiston - 02-01-2013, 03:34 AM
RE: Philco 38-116 Question More Questions - by jerryhawthorne - 02-03-2013, 09:46 PM



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