Philco 38-7CS

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Philco 38-7CS

Bob Andersen
Phorum Expert

Posts: 795
Threads: 42
Joined: Dec 2008
City: Chicago, IL

#16

07-28-2014, 03:16 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, 06:32 PM

RE: Philco 38-7CS - by Bob Andersen - 07-24-2014, 06:41 PM

RE: Philco 38-7CS - by Bob Andersen - 07-24-2014, 06:48 PM

RE: Philco 38-7CS - by Bob Andersen - 07-24-2014, 06:57 PM

RE: Philco 38-7CS - by Arran - 07-24-2014, 08:34 PM

RE: Philco 38-7CS - by Bob Andersen - 07-24-2014, 08:50 PM

RE: Philco 38-7CS - by codefox1 - 07-25-2014, 12:34 PM

RE: Philco 38-7CS - by Chuck Schwark - 07-25-2014, 12:46 PM

RE: Philco 38-7CS - by morzh - 07-25-2014, 12:47 PM

RE: Philco 38-7CS - by Bob Andersen - 07-25-2014, 03:24 PM

RE: Philco 38-7CS - by morzh - 07-25-2014, 04:02 PM

RE: Philco 38-7CS - by Arran - 07-25-2014, 11:06 PM

RE: Philco 38-7CS - by Bob Andersen - 07-27-2014, 02:35 PM

RE: Philco 38-7CS - by gregb - 07-27-2014, 10:13 PM

RE: Philco 38-7CS - by Bob Andersen - 07-27-2014, 10:28 PM

RE: Philco 38-7CS - by Bob Andersen - 07-28-2014, 03:16 PM

RE: Philco 38-7CS - by Mondial - 07-28-2014, 03:26 PM

RE: Philco 38-7CS - by Bob Andersen - 07-28-2014, 04:18 PM

RE: Philco 38-7CS - by Mondial - 07-28-2014, 04:36 PM

RE: Philco 38-7CS - by Bob Andersen - 07-28-2014, 05:51 PM

RE: Philco 38-7CS - by Bob Andersen - 07-28-2014, 09:29 PM

RE: Philco 38-7CS - by Chuck Schwark - 07-29-2014, 09:35 AM

RE: Philco 38-7CS - by morzh - 07-29-2014, 09:37 AM

RE: Philco 38-7CS - by Chuck Schwark - 07-29-2014, 09:42 AM

RE: Philco 38-7CS - by morzh - 07-29-2014, 10:02 AM

RE: Philco 38-7CS - by Warren - 07-29-2014, 12:59 PM

RE: Philco 38-7CS - by gregb - 07-29-2014, 02:16 PM

RE: Philco 38-7CS - by Bob Andersen - 07-29-2014, 02:31 PM

RE: Philco 38-7CS - by Bob Andersen - 08-03-2014, 01:06 PM

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

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