|
I saw the 67 volt batteries online not too long ago, but not the 90 volt.
Reading this thread has got me in a mood to check out my cousins old Silvertone farm radio. She gave it to me a few years before she died, and I've never tried to power it up. I used to have an old Eico adjustable power supply that could produce up to 450 volts, but since that went by the way-side I could just put together a slew of 9 volt batteries to make up the 90 volt B+.
I know the B battery should last a lot longer than the A supply for the filaments.
|