Atwater Kent Model 30 Question

[DavGoodlin]

Thanks Guys, I will use the 3AAA battery solution for C.

I ran a 120 ft antenna outside and applied power.

We got filaments lit and measured correct B and C voltages but have a 120 hz hum from the full wave bridges I built. Do I need a B voltage choke like on the AK 43?

No matter how much filtering capacitance is applied to the 90 v B supply
(500 mfd) or the 5v A supply (36,000 mfd) it is overpowering the audio. We are getting reception, but a check of the antenna choke confirmed it is open.