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46-200-122:
10-04-2021, 07:31 PM
Hello" I picked up a very ragged Model 46-200:-122 The Beitman 1947 Page 116 seems to be a close match, This one has a PM and electrolytic 40/40/40:
Anyone know if there is some document / notes that describes the 122? Looks to be a radio in MFG transition design.
10-04-2021, 10:41 PM
https://philcoradio.com/library/download...6-1947.pdf
Look at the last pg it has the updates for the different codes. When my pals were reading comic books I was down in the basement in my dad's workshop. Perusing his Sam's Photofoacts Vol 1-50 admiring the old set and trying to figure out what all those squiggly meant. Circa 1966 Now I think I've got! Terry
10-07-2021, 01:04 PM
Thank You.. Thats what I need.. Radio apears to be a hybrid and this will hopefuly shed some light on the changes and stages..
10-21-2021, 07:21 PM
Finaly got her up and running. Turns out it had a bad 1st stage IF coil open. Found a similar IF at 30 vs 28 ohms and now she plays. (Retuned the 2 stages and oscilator coil. ) PROBLEM #2.. Sound quality sounds poor and I believe the speaker is causing the distortion. This is a PM .. Output transformer 245 ohms and speaker 1 ohm. Is ther a way to substitue another misc speaker 4 ohms and its 400 ohm transformer?
10-23-2021, 07:18 AM
The dc resistance doesn't matter when choosing an output transformer. It's the ac impedance that counts. What you are looking for is something that has a 2,000 ohm primary impedance and the secondary to match the voice coil. With a 1 ohm (resistance) vc I'd find a 3.5 ohm (impedance) spkr to match your original opt. An 8 ohm spkr is not the best match when there are plenty of 3.5 ohm spkrs around.
When my pals were reading comic books I was down in the basement in my dad's workshop. Perusing his Sam's Photofoacts Vol 1-50 admiring the old set and trying to figure out what all those squiggly meant. Circa 1966 Now I think I've got! Terry
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