Philco 38-7CS

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Philco 38-7CS

Bob Andersen
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Posts: 811
Threads: 43
Joined: Dec 2008
City: Chicago, IL

#16

07-28-2014, 04:16 PM

I just did some experimenting with the AVC and found it's stays at around -0.3 volts no matter how I tune the dial.

I hooked up an external variable DC supply through a 1 Meg resistor and forced it to about -1.0 volts and the sound came booming through. It tops out at around -1.5 volts and going more negative has no noticeable effect.

Odd, I expected going more positive to increase the volume, but it seems to be the opposite.

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Messages In This Thread

Philco 38-7CS - by Bob Andersen - 07-24-2014, 07:32 PM

RE: Philco 38-7CS - by Bob Andersen - 07-24-2014, 07:41 PM

RE: Philco 38-7CS - by Bob Andersen - 07-24-2014, 07:48 PM

RE: Philco 38-7CS - by Bob Andersen - 07-24-2014, 07:57 PM

RE: Philco 38-7CS - by Arran - 07-24-2014, 09:34 PM

RE: Philco 38-7CS - by Bob Andersen - 07-24-2014, 09:50 PM

RE: Philco 38-7CS - by codefox1 - 07-25-2014, 01:34 PM

RE: Philco 38-7CS - by Chuck Schwark - 07-25-2014, 01:46 PM

RE: Philco 38-7CS - by morzh - 07-25-2014, 01:47 PM

RE: Philco 38-7CS - by Bob Andersen - 07-25-2014, 04:24 PM

RE: Philco 38-7CS - by morzh - 07-25-2014, 05:02 PM

RE: Philco 38-7CS - by Arran - 07-26-2014, 12:06 AM

RE: Philco 38-7CS - by Bob Andersen - 07-27-2014, 03:35 PM

RE: Philco 38-7CS - by gregb - 07-27-2014, 11:13 PM

RE: Philco 38-7CS - by Bob Andersen - 07-27-2014, 11:28 PM

RE: Philco 38-7CS - by Bob Andersen - 07-28-2014, 04:16 PM

RE: Philco 38-7CS - by Mondial - 07-28-2014, 04:26 PM

RE: Philco 38-7CS - by Bob Andersen - 07-28-2014, 05:18 PM

RE: Philco 38-7CS - by Mondial - 07-28-2014, 05:36 PM

RE: Philco 38-7CS - by Bob Andersen - 07-28-2014, 06:51 PM

RE: Philco 38-7CS - by Bob Andersen - 07-28-2014, 10:29 PM

RE: Philco 38-7CS - by Chuck Schwark - 07-29-2014, 10:35 AM

RE: Philco 38-7CS - by morzh - 07-29-2014, 10:37 AM

RE: Philco 38-7CS - by Chuck Schwark - 07-29-2014, 10:42 AM

RE: Philco 38-7CS - by morzh - 07-29-2014, 11:02 AM

RE: Philco 38-7CS - by Warren - 07-29-2014, 01:59 PM

RE: Philco 38-7CS - by gregb - 07-29-2014, 03:16 PM

RE: Philco 38-7CS - by Bob Andersen - 07-29-2014, 03:31 PM

RE: Philco 38-7CS - by Bob Andersen - 08-03-2014, 02:06 PM

RE: Philco 38-7CS - by codefox1 - 08-03-2014, 04:29 PM

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