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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


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



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