Philco 90 restoration

Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed

Thread Rating:

1 Vote(s) - 5 Average
1
2
3
4
5

Linear Mode

Philco 90 restoration

MrFixr55
Super Moderator

Posts: 1,268
Threads: 11
Joined: Jul 2020
City: Greenlawn State, Province, Country: NY

#32

10-02-2021, 08:42 AM

Hi Bob,
Any output transformer from any radio of the period that uses a 2A5, 42 or 6F6 should do, as they all have the approximate load resistance, plate voltage, current, etc. as the 47. The 2A5 was the logical next step on evolution of the power pentode from the 47. Other than filament (heater) voltage and, in the case of the 6F6, pinouts, the specs are the same.

For RCA Radios for which I have Ryder Schematics that list output wattage of a single 47, 2A5, 42 or 6F6, the maximum out is 5 Watts. Typical "undistorted" Output is 2.5 watts. RCA's definition of "undistorted" at that time was 5% or less. The RCA Receiving Tube Manual lists power output for a 47 to be 2.7 Watts at 6% distortion, so a 5 Watt transformer should do.

"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
"Let us begin to do good"- St. Francis

Best Regards,

MrFixr55

Find

« Next Oldest | Next Newest »

Thread Closed

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

View a Printable Version

Users browsing this thread: 2 Guest(s)

Recent Posts
Model 80 Antenna Issue?
Thanks Gary and Rod. I also found an article in the Philco Repair Bench under Service Hints and Tips, about installi...Hamilton — 12:32 PM
Model 80 Antenna Issue?
Hello Hamilton, here is a little information found in our Philco Radio Library at the bottom of the Home page. Hope it ...GarySP — 11:28 AM
Model 80 Antenna Issue?
I did as you suggested and touching the middle of the volume control did nothing so the coil has to be rewound. Any idea...Hamilton — 10:19 AM
1949 Motorola 5A9M
This would be the second portable in the "other radios" forum where I have a similar one in my collection. I h...Arran — 12:41 AM
Looking for any info: 1977 Ford-Philco Console Hi-Fi Turntable and Radio
Hi PittsburgTost. The record changer looks like a Garrard or BSR (Likely Garrard). The spindles just pull out and pu...MrFixr55 — 11:57 PM
Looking for any info: 1977 Ford-Philco Console Hi-Fi Turntable and Radio
Hello PittsburghToast , Welcome aboard and it looks like gary may have something for you ! now if I dig through my se...radiorich — 11:35 PM
Model 80 Antenna Issue?
You are kind of on the right path. You can touch the grid cap of the Detector/Oscillator 36 tube. I'm expecting a respon...RodB — 08:48 PM
Looking for any info: 1977 Ford-Philco Console Hi-Fi Turntable and Radio
Welcome to the Phorum, PittsburghToast! I found an old thread that my interest you regarding the quality and worth of P...GarySP — 08:48 PM
Looking for any info: 1977 Ford-Philco Console Hi-Fi Turntable and Radio
Welcome to the Phorum! :wave: We do not have anything on that unit in our digital library. There is a Sam's Photof...klondike98 — 08:47 PM
Model 80 Antenna Issue?
I’ve replaced all the caps and resistors and the radio is working but minimal volume unless I put my hand near the re...Hamilton — 08:24 PM

Who's Online
There are currently no members online.

Login
Username:
Password:	Lost Password?
	Remember me