03-28-2018, 04:49 AM
Hi and welcome,
> i plan a recap and change out of all the resistors.
Sounds good. I generally measure the resistors to see if they are within tolerance (20% of the color code marking). Most of them you can measure in circuit as long as they don't any thing in parallel with them.
All of the resistor are 1/2w with the exception of 8,12, and 30. 8 and 12 are a couple of watts and 30 judging from the size is about 15w. It's rarely bad
< MUST I DO for reliability and any upgrades from the 1934 design are welcome.
The set is a good reliable set once serviced properly. Was Philco price leader (inexpensive bare bones set) for the last several years starting with the model 80 and 81. Short of lower the value of the grid leak resistor in the detector stage which will broaden the selectivity a little that's about it.
GL
> i plan a recap and change out of all the resistors.
Sounds good. I generally measure the resistors to see if they are within tolerance (20% of the color code marking). Most of them you can measure in circuit as long as they don't any thing in parallel with them.
All of the resistor are 1/2w with the exception of 8,12, and 30. 8 and 12 are a couple of watts and 30 judging from the size is about 15w. It's rarely bad
< MUST I DO for reliability and any upgrades from the 1934 design are welcome.
The set is a good reliable set once serviced properly. Was Philco price leader (inexpensive bare bones set) for the last several years starting with the model 80 and 81. Short of lower the value of the grid leak resistor in the detector stage which will broaden the selectivity a little that's about it.
GL
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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