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

Thread Closed

RCA Radiodyne 28
#37

   

The caps are C12 & C15...

In other Radiola catacomb data these are shown to be 2mf, each.

The schematic seems to indicate that they are not part of the frame but part of or an extension (wired) from the terminal strip. So, may be in the battery box below if need be...

Think, if the ARBE is going below, you can extend a pendant switch to control it, the caps could go across the ARBE and for that matter could even be modern caps as they are out of view even if the the lid is opened. The ARBE provides a noise bypass only on the 135v connection...

Save the ARBE receipt to validate the warranty...

Much of power supply control can be screwed to the floor of the lower cabinet, up to you.

The 2 mf caps are to provide RF bypass.

>>> In this transaction, the parts are FREE. I do not need them to restore a Radiola to OEM, I have a round meter for the test panel and a flat pack rheostat for the volume for the one Radiola 25 test panel.

Forward me reimbursement for the shipping when I PM the USPS receipt.

Not seen in the image, there is a very very faint ghost price of 25 cents on the celluloid bezel of the meter Icon_biggrin

>>> When the replacement audio transformer was installed, did the correct leads, start and finish of each winding get connected to correct locations?  This is important as a transformer can invert the signal and in some designs this can cause a feedback howling that cannot be controlled. FWIK the Catacomb is conventionally connected to the transformers, observing the known color code at the time, but if it howls and the volume control does not work, then one pair of wires needs to be reversed.  Did you note colored silk covering to the transformer leads?

Chas

Pliny the younger
“nihil novum nihil varium nihil quod non semel spectasse sufficiat”


Messages In This Thread
RCA Radiodyne 28 - by Rob Quay - 05-17-2024, 02:26 PM
RE: RCA Radiodyne 28 - by Radioroslyn - 05-17-2024, 10:06 PM
RE: RCA Radiodyne 28 - by Rob Quay - 05-18-2024, 08:11 AM
RE: RCA Radiodyne 28 - by Chas - 05-18-2024, 12:32 PM
RE: RCA Radiodyne 28 - by Rob Quay - 05-18-2024, 02:14 PM
RE: RCA Radiodyne 28 - by Chas - 05-18-2024, 03:09 PM
RE: RCA Radiodyne 28 - by Rob Quay - 05-18-2024, 04:05 PM
RE: RCA Radiodyne 28 - by Rob Quay - 05-20-2024, 05:07 PM
RE: RCA Radiodyne 28 - by Chas - 05-21-2024, 12:07 AM
RE: RCA Radiodyne 28 - by Rob Quay - 05-21-2024, 10:34 AM
RE: RCA Radiodyne 28 - by Rob Quay - 05-21-2024, 10:36 AM
RE: RCA Radiodyne 28 - by Chas - 05-21-2024, 09:09 PM
RE: RCA Radiodyne 28 - by Rob Quay - 05-22-2024, 12:00 AM
RE: RCA Radiodyne 28 - by Chas - 05-22-2024, 10:25 AM
RE: RCA Radiodyne 28 - by Rob Quay - 05-22-2024, 11:49 PM
RE: RCA Radiodyne 28 - by Chas - 05-23-2024, 12:02 PM
RE: RCA Radiodyne 28 - by Rob Quay - 05-23-2024, 02:07 PM
RE: RCA Radiodyne 28 - by Chas - 05-23-2024, 03:46 PM
RE: RCA Radiodyne 28 - by Rob Quay - 06-01-2024, 11:32 AM
RE: RCA Radiodyne 28 - by Rob Quay - 06-01-2024, 06:52 PM
RE: RCA Radiodyne 28 - by Chas - 06-01-2024, 08:09 PM
RE: RCA Radiodyne 28 - by Rob Quay - 06-02-2024, 09:07 AM
RE: RCA Radiodyne 28 - by Chas - 06-02-2024, 12:04 PM
RE: RCA Radiodyne 28 - by Rob Quay - 06-04-2024, 10:00 AM
RE: RCA Radiodyne 28 - by Chas - 06-04-2024, 11:29 AM
RE: RCA Radiodyne 28 - by Rob Quay - 06-06-2024, 10:17 AM
RE: RCA Radiodyne 28 - by Chas - 06-06-2024, 12:29 PM
RE: RCA Radiodyne 28 - by Rob Quay - 06-06-2024, 02:04 PM
RE: RCA Radiodyne 28 - by Chas - 06-06-2024, 03:12 PM
RE: RCA Radiodyne 28 - by Rob Quay - 06-06-2024, 04:36 PM
RE: RCA Radiodyne 28 - by Chas - 06-06-2024, 08:56 PM
RE: RCA Radiodyne 28 - by Rob Quay - 06-06-2024, 11:40 PM
RE: RCA Radiodyne 28 - by Chas - 06-07-2024, 03:28 PM
RE: RCA Radiodyne 28 - by Rob Quay - 06-07-2024, 10:46 PM
RE: RCA Radiodyne 28 - by Chas - 06-09-2024, 04:06 PM
RE: RCA Radiodyne 28 - by Rob Quay - 06-09-2024, 05:43 PM
RE: RCA Radiodyne 28 - by Chas - 06-09-2024, 06:51 PM
RE: RCA Radiodyne 28 - by Rob Quay - 06-14-2024, 11:45 AM
RE: RCA Radiodyne 28 - by Rob Quay - 06-14-2024, 11:46 AM
RE: RCA Radiodyne 28 - by Chas - 06-14-2024, 02:43 PM
RE: RCA Radiodyne 28 - by Rob Quay - 06-16-2024, 11:07 AM
RE: RCA Radiodyne 28 - by Chas - 06-16-2024, 11:42 AM
RE: RCA Radiodyne 28 - by Rob Quay - 06-18-2024, 06:22 PM
RE: RCA Radiodyne 28 - by Rob Quay - 06-18-2024, 06:22 PM
RE: RCA Radiodyne 28 - by Rob Quay - 06-18-2024, 06:28 PM
RE: RCA Radiodyne 28 - by Chas - 06-18-2024, 06:44 PM
RE: RCA Radiodyne 28 - by Rob Quay - 06-18-2024, 10:39 PM
RE: RCA Radiodyne 28 - by Chas - 06-19-2024, 12:39 AM
RE: RCA Radiodyne 28 - by Rob Quay - 06-19-2024, 12:23 PM
RE: RCA Radiodyne 28 - by Chas - 06-19-2024, 02:11 PM
RE: RCA Radiodyne 28 - by Rob Quay - 06-20-2024, 03:18 PM
RE: RCA Radiodyne 28 - by GarySP - 06-20-2024, 04:22 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
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
under chassis parts locator diagram for 1938 Zenith 9s262
Has anyone gone to the trouble of creating an under chassis parts locator image?  Yes, I can identify components by foll...bobloney — 08:57 PM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
Try looking at this site the book mark is for a old generator that I was given. David    https://radionerds.com/index.ph...David — 08:36 PM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
Hello Everyone, I am looking for voltage identification for all the pin positions on the socket of a CRV-20130 power su...Tonym4704 — 08:16 PM
Philco P45-6365 Universal Transformer Instruction Manual
Can anyone guide me to where this may be found?GRG — 03:00 PM
54C Complete Teardown/Rebuild
I don't think that I have encountered a 12Z3 before, curious how it uses one of those but includes a #43, which is a 25 ...Arran — 02:17 PM
HiFi (Chifi) tube amp build - but my own design.
It's the other forum. I'm also in DIY, but mostly read there. Honestly, I kinda jumped into this without much thought to...TV MAN — 10:43 AM
Philco 71 Code 125
Hello,  I am in need of a schematic for this radio. Mine has the three separate circular tube shields and a shadow me...dconant — 08:06 AM
Stromberg Carlson 1500 Squeal
And life just keeps getting more complicated.dconant — 07:57 AM

[-]
Who's Online
There are currently no members online.

>