Hi
I’m new to this group.
I’m hoping someone might be able to help me design a circuit to go between the pre-amp 6F5 tube and the push pull 6F6 tube of a vintage 1936 Northern Electric model 105 radio.
The dc resistance is 3200 ohms and 3800 ohms.
One side of this transformer is open and I have not been able to find any type of replacement.
Rewinding the transformer is not possible due to the thousands of wraps of 42 gauge wire.
The 1935 Westinghouse WR-306 uses the exact same chassis.
Thank you

 

Looks like a simple interstage coupling transformer designed for SE class A operation.
https://www.hammfg.com/electronics/transformers/audio/126



It's usually not critical to match the part exactly. The DC bias from the driver tube plate must not exceed the transformer spec rating.

 

Looks like a simple interstage coupling transformer designed for SE class A operation.
https://www.hammfg.com/electronics/transformers/audio/126



It's usually not critical to match the part exactly. The DC bias from the driver tube plate must not exceed the transformer spec rating.

Hi
Are you referring to the 6F5 or the 6F6 as the driver tube???
Sorry I’m not familiar with that term, but I am now!!!

Thanks for your response.