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

Thread Closed

Philco model 38 code 121 not receiving signal.
#37

So one last question before I finish this radio. Regarding the speaker and output transformer. I salvaged the original opt from the speaker and noticed from the get-go that my code 123 model 38 has the opt mounted to the chassis. On the 121 chassis it's mounted to the speaker. Where it's mounted on the 123 (1A6 pentagrid tube) is between the converter tube and 19 output amp tube. This is the only spot on my 121 chassis I can mount it, between the 15 and 19. Since the 123 uses a more standard converter circuit I am wandering if the autodyne circuit that the 121 uses would be susceptible to magnetic interference from the opt and that's why they mount it to the speaker. My replacement does not have a mounting for the opt. The only other spot is on the cabinet arch support in the back. What do you think is best?      
Code 121
   
Code 123


Messages In This Thread
RE: Philco model 38 code 121 not receiving signal. - by Stormlord5500 - 05-02-2025, 09:31 AM



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.

>