[GRG]

I was reading this thread https://philcoradio.com/phorum/showthread.php?tid=18900 .  Radioroslyn suggests using a  6.8 mf cap to replace the  R7 305 ohms voltage droping resistor.  See attached schematic.

I have two questions, 1) My line voltage is 120V so should I use something greater? 2) I assume the cap is non-polarized, is that correct?

Thank you.

[radiorich]

Hello Glen,
Well Here is a link to the math formula and talks about dropping capacitor.
Yes a Non-Polarized capacitor like a film capacitor can be used.

https://www.vintage-radio.com/repair-res...calcs.html

plus here is link to ARf forum about radio using 

https://antiqueradios.com/forums/viewtop...r#p3934848
Sincerely Richard

[GRG]

Excellent, thank you!

[morzh]

yep, exactly 6.8uF for 120V AC.

[GRG]

Installed the capacitor voltage dropper with caps on hand (made a capacitor bank with 2 x 3 uF and 2 x .4 uF). Also added a 100k discharge resistor.  The radio is working well and cool as a cucumber. 

Thanks again gentlemen.