1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration

Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x


Linear Mode
Canadian Philco Model 81 Transitone
Joe Rossi
Senior Member
****
Posts: 711
Threads: 46
Joined: Sep 2009
City: Lapeer, MI State, Province, Country: USA
#22

09-02-2026, 02:30 PM
MrFixr,  I have an OWON PC o-scope, but to my embarassment and shame, I have never learned to use it. I'm going cross-eyed Icon_crazy  going over the components and comparing (tracing) to the schematic.  I've noticed that the US 50-520 has a 150K resistor (R100) between the floating ground and chassis ground, where the 81 doesn't have one.  Also, the 81 schematic (and the 50-520) has a dotted line conection in Section 4 labeled C101C.  Anyway, I'm going to hold back for a couple of days and come back to it with a hopefully fresh mind  Icon_e_wink.  Joe
Courage will follow when Faith takes the lead.
Find
« Next Oldest | Next Newest »


Messages In This Thread
RE: Canadian Philco Model 81 Transitone - by RodB - 09-01-2026, 04:31 PM
RE: Canadian Philco Model 81 Transitone - by Joe Rossi - 09-02-2026, 02:30 PM
RE: Canadian Philco Model 81 Transitone - by RodB - 09-05-2026, 09:03 AM
RE: Canadian Philco Model 81 Transitone - by RodB - 09-05-2026, 01:09 PM
RE: Canadian Philco Model 81 Transitone - by RodB - 09-09-2026, 05:18 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 45-6365 Universal IFT Instruction Manual
The Philco Parts Catalog for 1942 shows it as usable for 175 kHz, 260 kHz, and 465 kHz. The instructions will show how t...DaleHCook — 11:19 AM
Stromberg Carlson 1500 Squeal
Hello Rob, I agree with you—I have one here at my house that I need to check out. It’s way over-engineered just to make...radiorich — 11:05 AM
My Atwater Kent 84
Well getting around to restoring my AK84. Mike was a big part in me being able to snatch this one a few years ago. I won...462ron — 10:57 AM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
The engine is a B&S 23 inch cast Iron holds 2 quarts of oil. The Generator is a 4 pole 1800 rpm mine was made in 195...David — 10:51 AM
Philco 45-6365 Universal IFT Instruction Manual
Dale: Modified topic as suggested. It is not for a specific project. I found it in a box of stuff I recently purchased...GRG — 10:34 AM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
That looks a lot like an aircraft connector of some kind ... That is a MIL-5015 style connector, used in a wide v...DaleHCook — 10:19 AM
Philco P45-6365 Universal Transformer Instruction Manual
I would suggest changing the topic from "P45-6365 Universal Transformer" to "45-6365 Universal IFT."...DaleHCook — 10:08 AM
Stromberg Carlson 1500 Squeal
And life just keeps getting more complicated. By dconant. Dittos'Jimradio — 08:01 AM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
That looks a lot like an aircraft connector of some kind, even if it's a U.S.N power supply. I have a book somewhere abo...Arran — 02:56 AM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
hello david, I have a similar generator in my collection that features a cast iron, single-cylinder Briggs & Stratt...radiorich — 01:00 AM

[-]
Who's Online
There are currently 1365 online users. [Complete List]
» 1 Member(s) | 1364 Guest(s)
Avatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration