Philco 90 restoration

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Philco 90 restoration

Ron Ramirez
Silent Key

Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand State, Province, Country: Indiana

#110

12-01-2021, 10:08 PM

The design engineers selected the components when they designed the circuits, prior to the beginning of production. Changes were (often) made during production, and these changes were then incorporated into production and usually (but not always, as we know) documented.

--
Ron Ramirez
Ferdinand IN

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Messages In This Thread

Philco 90 restoration - by Bob Andersen - 09-18-2021, 01:16 AM

RE: Philco 90 restoration - by Ron Ramirez - 09-18-2021, 11:42 AM

RE: Philco 90 restoration - by morzh - 09-18-2021, 03:20 PM

RE: Philco 90 restoration - by Ron Ramirez - 09-18-2021, 03:54 PM

RE: Philco 90 restoration - by klondike98 - 09-18-2021, 04:36 PM

RE: Philco 90 restoration - by Bob Andersen - 09-19-2021, 12:22 AM

RE: Philco 90 restoration - by Bob Andersen - 09-19-2021, 12:32 AM

RE: Philco 90 restoration - by Arran - 09-19-2021, 02:02 AM

RE: Philco 90 restoration - by Bob Andersen - 09-19-2021, 02:30 PM

RE: Philco 90 restoration - by Steve Davis - 09-19-2021, 03:53 PM

RE: Philco 90 restoration - by Bob Andersen - 09-19-2021, 05:18 PM

RE: Philco 90 restoration - by Ron Ramirez - 09-19-2021, 07:55 PM

RE: Philco 90 restoration - by morzh - 09-19-2021, 08:40 PM

RE: Philco 90 restoration - by Steve Davis - 09-19-2021, 09:44 PM

RE: Philco 90 restoration - by morzh - 09-19-2021, 10:06 PM

RE: Philco 90 restoration - by Simon Wa3uay - 09-20-2021, 04:42 PM

RE: Philco 90 restoration - by Bob Andersen - 09-20-2021, 05:35 PM

RE: Philco 90 restoration - by Bob Andersen - 09-20-2021, 05:56 PM

RE: Philco 90 restoration - by Bob Andersen - 09-21-2021, 12:23 AM

RE: Philco 90 restoration - by Bob Andersen - 09-23-2021, 06:52 PM

RE: Philco 90 restoration - by morzh - 09-23-2021, 08:31 PM

RE: Philco 90 restoration - by Bob Andersen - 09-23-2021, 10:39 PM

RE: Philco 90 restoration - by morzh - 09-23-2021, 11:53 PM

RE: Philco 90 restoration - by Steve Davis - 09-24-2021, 10:12 AM

RE: Philco 90 restoration - by madsowry - 09-26-2021, 09:12 PM

RE: Philco 90 restoration - by Bob Andersen - 09-27-2021, 01:42 AM

RE: Philco 90 restoration - by Bob Andersen - 09-27-2021, 07:39 PM

RE: Philco 90 restoration - by mikethedruid - 09-27-2021, 08:34 PM

RE: Philco 90 restoration - by Bob Andersen - 09-27-2021, 09:02 PM

RE: Philco 90 restoration - by Bob Andersen - 10-01-2021, 04:49 PM

RE: Philco 90 restoration - by morzh - 10-01-2021, 06:12 PM

RE: Philco 90 restoration - by MrFixr55 - 10-02-2021, 08:42 AM

RE: Philco 90 restoration - by Greg - 10-03-2021, 12:53 PM

RE: Philco 90 restoration - by Bob Andersen - 10-03-2021, 04:55 PM

RE: Philco 90 restoration - by morzh - 10-03-2021, 11:13 PM

RE: Philco 90 restoration - by Bob Andersen - 10-07-2021, 02:20 AM

RE: Philco 90 restoration - by morzh - 10-07-2021, 08:19 PM

RE: Philco 90 restoration - by Arran - 10-10-2021, 02:38 AM

RE: Philco 90 restoration - by morzh - 10-10-2021, 12:09 PM

RE: Philco 90 restoration - by Bob Andersen - 10-19-2021, 03:15 PM

RE: Philco 90 restoration - by Phlogiston - 10-19-2021, 03:39 PM

RE: Philco 90 restoration - by Arran - 10-21-2021, 02:25 AM

RE: Philco 90 restoration - by morzh - 10-21-2021, 12:19 PM

RE: Philco 90 restoration - by Bob Andersen - 10-23-2021, 02:20 PM

RE: Philco 90 restoration - by Bob Andersen - 10-26-2021, 04:16 PM

RE: Philco 90 restoration - by Paul Philco322 - 10-26-2021, 05:53 PM

RE: Philco 90 restoration - by Ron Ramirez - 10-26-2021, 06:19 PM

RE: Philco 90 restoration - by Bob Andersen - 10-26-2021, 06:52 PM

RE: Philco 90 restoration - by Ron Ramirez - 10-26-2021, 07:28 PM

RE: Philco 90 restoration - by radiorich - 10-26-2021, 08:06 PM

RE: Philco 90 restoration - by Steve Davis - 10-26-2021, 08:22 PM

RE: Philco 90 restoration - by radiorich - 10-26-2021, 09:00 PM

RE: Philco 90 restoration - by Bob Andersen - 10-26-2021, 09:36 PM

RE: Philco 90 restoration - by Bob Andersen - 10-26-2021, 10:18 PM

RE: Philco 90 restoration - by BrendaAnnD - 10-26-2021, 11:02 PM

RE: Philco 90 restoration - by radiorich - 10-26-2021, 11:08 PM

RE: Philco 90 restoration - by Steve Davis - 10-26-2021, 11:34 PM

RE: Philco 90 restoration - by radiorich - 10-26-2021, 11:58 PM

RE: Philco 90 restoration - by Bob Andersen - 10-27-2021, 12:08 AM

RE: Philco 90 restoration - by Bob Andersen - 10-27-2021, 05:44 PM

RE: Philco 90 restoration - by Bob Andersen - 10-27-2021, 07:14 PM

RE: Philco 90 restoration - by radiorich - 10-27-2021, 07:38 PM

RE: Philco 90 restoration - by Bob Andersen - 10-29-2021, 05:02 PM

RE: Philco 90 restoration - by morzh - 10-29-2021, 09:15 PM

RE: Philco 90 restoration - by Bob Andersen - 10-30-2021, 12:54 AM

RE: Philco 90 restoration - by radiorich - 10-30-2021, 01:31 AM

RE: Philco 90 restoration - by Arran - 11-02-2021, 08:09 PM

RE: Philco 90 restoration - by Bob Andersen - 11-03-2021, 01:11 AM

RE: Philco 90 restoration - by Bob Andersen - 11-03-2021, 10:35 PM

RE: Philco 90 restoration - by radiorich - 11-04-2021, 01:02 AM

RE: Philco 90 restoration - by Bob Andersen - 11-04-2021, 01:26 PM

RE: Philco 90 restoration - by Bob Andersen - 11-06-2021, 01:32 AM

RE: Philco 90 restoration - by radiorich - 11-06-2021, 01:53 PM

RE: Philco 90 restoration - by OZ4 - 11-06-2021, 07:22 PM

RE: Philco 90 restoration - by Bob Andersen - 11-10-2021, 02:21 AM

RE: Philco 90 restoration - by Bob Andersen - 11-17-2021, 05:35 PM

RE: Philco 90 restoration - by Bob Andersen - 11-17-2021, 06:13 PM

RE: Philco 90 restoration - by Bob Andersen - 11-17-2021, 06:55 PM

RE: Philco 90 restoration - by Bob Andersen - 11-17-2021, 07:45 PM

RE: Philco 90 restoration - by Bob Andersen - 11-19-2021, 11:58 AM

RE: Philco 90 restoration - by Steve Davis - 11-19-2021, 12:24 PM

RE: Philco 90 restoration - by Steve Davis - 11-19-2021, 12:37 PM

RE: Philco 90 restoration - by Bob Andersen - 11-19-2021, 02:11 PM

RE: Philco 90 restoration - by Steve Davis - 11-19-2021, 04:33 PM

RE: Philco 90 restoration - by Phlogiston - 11-20-2021, 12:05 PM

RE: Philco 90 restoration - by radiorich - 11-20-2021, 12:42 PM

RE: Philco 90 restoration - by cknob - 11-23-2021, 04:23 PM

RE: Philco 90 restoration - by Bob Andersen - 11-25-2021, 02:33 AM

RE: Philco 90 restoration - by cknob - 11-25-2021, 10:30 AM

RE: Philco 90 restoration - by Bob Andersen - 11-26-2021, 10:29 PM

RE: Philco 90 restoration - by morzh - 11-26-2021, 11:44 PM

RE: Philco 90 restoration - by Arran - 11-28-2021, 08:33 AM

RE: Philco 90 restoration - by Bob Andersen - 11-28-2021, 03:14 PM

RE: Philco 90 restoration - by Bob Andersen - 11-29-2021, 03:36 AM

RE: Philco 90 restoration - by cknob - 11-29-2021, 08:51 AM

RE: Philco 90 restoration - by radiorich - 11-29-2021, 09:06 AM

RE: Philco 90 restoration - by cknob - 11-29-2021, 10:03 AM

RE: Philco 90 restoration - by RodB - 11-29-2021, 10:43 AM

RE: Philco 90 restoration - by mikethedruid - 11-29-2021, 10:44 AM

RE: Philco 90 restoration - by RodB - 11-29-2021, 10:54 AM

RE: Philco 90 restoration - by Bob Andersen - 11-29-2021, 11:08 AM

RE: Philco 90 restoration - by cknob - 11-29-2021, 11:21 AM

RE: Philco 90 restoration - by RodB - 11-29-2021, 11:57 AM

RE: Philco 90 restoration - by morzh - 11-29-2021, 01:15 PM

RE: Philco 90 restoration - by Steve Davis - 11-29-2021, 01:54 PM

RE: Philco 90 restoration - by Bob Andersen - 11-29-2021, 05:30 PM

RE: Philco 90 restoration - by Ron Ramirez - 11-29-2021, 07:07 PM

RE: Philco 90 restoration - by cknob - 12-01-2021, 03:39 PM

RE: Philco 90 restoration - by Steve Davis - 12-01-2021, 09:23 PM

RE: Philco 90 restoration - by Ron Ramirez - 12-01-2021, 10:08 PM

RE: Philco 90 restoration - by Steve Davis - 12-01-2021, 10:47 PM

RE: Philco 90 restoration - by cknob - 12-02-2021, 08:22 AM

RE: Philco 90 restoration - by Arran - 12-04-2021, 04:19 AM

RE: Philco 90 restoration - by Simon Wa3uay - 12-04-2021, 11:29 AM

RE: Philco 90 restoration - by Bob Andersen - 12-09-2021, 02:21 AM

RE: Philco 90 restoration - by radiorich - 12-09-2021, 02:29 AM

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