01-09-2024, 10:04 AM
Sorry I don't understand the question. Does "me" mean if you do the work how much would the common replaced parts cost? Or How much would it cost to pay someone else to fix it for me?
It's a good question in that this set has some odd tubes in it that if they are weak or just bad may present a problem to find like the FM1000. Some of the other loctals I've never heard of.
Around that time 1947-48 Philco was working on a way to demodulate FM that didn't require using anyone else's detector circuit. Philco hated paying royalties to RCA and others for the use of circuits. That's why you'll never see an eye tube (RCA circa 1935) on a Philco till maybe the mid/late '50s, they had the shadow meter. So the engineers came up with the circuit using this multigrid tube, the FM1000. Sylvania was making the tubes for Philco so they designed the tube for this purpose. There is no substitute for it and they're kinda mysterious in that there isn't much printed data (spec's) about it. Pretty much the pinout and heater current/voltage.
I'm lisdexsic and don't read things the same as others.
https://philcoradio.com/library/download...8-1949.pdf
It's a good question in that this set has some odd tubes in it that if they are weak or just bad may present a problem to find like the FM1000. Some of the other loctals I've never heard of.
Around that time 1947-48 Philco was working on a way to demodulate FM that didn't require using anyone else's detector circuit. Philco hated paying royalties to RCA and others for the use of circuits. That's why you'll never see an eye tube (RCA circa 1935) on a Philco till maybe the mid/late '50s, they had the shadow meter. So the engineers came up with the circuit using this multigrid tube, the FM1000. Sylvania was making the tubes for Philco so they designed the tube for this purpose. There is no substitute for it and they're kinda mysterious in that there isn't much printed data (spec's) about it. Pretty much the pinout and heater current/voltage.
I'm lisdexsic and don't read things the same as others.
https://philcoradio.com/library/download...8-1949.pdf
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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