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This tuning condenser has 4 gangs. But 2 are single blade (I would imagine SW and FM?). I didn't mark them when I removed them, and I'm lost as to proper hook-up.
I know the tuner is #14. One tab is connected to pin 2 of #7 (the FM oscill. trans.), one is connected to pin 7 of #7, one to C-3/C-4, and one to B-4.
But for the life of me, I can't figure out which! Can someone help?
Thanks,
Pat
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>(I would imagine SW and FM?)
For the FM section.
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 it!
Terry
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State, Province, Country: Ontario
According to the schematic, the FM coils are directly across the single-section parts of the tuning capacitor and AM and SW share the other part. The bandswitch positions appear to be pushbutton AM tuning (where the switch is in the schematic), AM, SW and FM. Pushbutton tuning only uses the rows of tuning capacitors on the bottom. AM and SW use the large parts of the tuning cap and FM uses the small part.
Posts: 375
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Joined: Oct 2014
City: Winter Haven, FL
Posts: 375
Threads: 79
Joined: Oct 2014
City: Winter Haven, FL
(10-30-2018, 06:53 PM)Radioroslyn Wrote: >(I would imagine SW and FM?)
For the FM section.
I see it now. Would have been nice if Philco would have indicated that rather than just expecting everyone to know it.
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It's pretty much common sense the smaller amount of capacitance the higher the frequency.
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 it!
Terry
Posts: 375
Threads: 79
Joined: Oct 2014
City: Winter Haven, FL
(11-01-2018, 07:14 AM)Radioroslyn Wrote: It's pretty much common sense the smaller amount of capacitance the higher the frequency.
It's common sense IF you can remember everything you've learned about electronics. I've forgotton
more than I ever knew.
Posts: 7,323
Threads: 270
Joined: Dec 2009
City: Roslyn Pa
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 it!
Terry
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City: Jackson
State, Province, Country: NJ
Philco, in its time, never expected anyone other than trained technicians to tend to their radios. This is why they never put down any details like this one.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
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