Re: [AMRadio] Oscillator Filament Voltage change and frequency drift

[W5OMR/Geoff]

Jim Candela wrote:

Don,

I'm wondering about those 6AU6's. Not all of us have

a Sola CVT, so I have another idea. Change the tube
for a 5AU6, and then take the 6.3 vac (usually
unbalanced), and 1/2 wave rectify with a low drop
Schotcky diode (about 0.3 volt forward drop), filter,
and then run through a 3 terminal low drop 5 volt
regulator. I'll do some book searching for some

suitable part numbers.

7405?