> On Oct 13, 2023, at 4:41 AM, Christian Corti via cctalk
> <cctalk@classiccmp.org> wrote:
>
> ...
> And the interesting part will be to build the DC power supply for the many
> voltages (-270V, -130V, -60V, +140V, +270V) and the heater supply.
A good source for information on how to do that would be an older edition of
the ARRL Amateur Radio Handbook. Those can be found, from used book dealers.
I have a 1954 edition that would do well, though one from the 1960s is likely
also good (perhaps better since the earlier ones would have vacuum rectifiers,
which in a newly built supplly isn't optimal).
Chances are those voltages don't need to be tightly regulated, not like trying
to build a TWT supply... so the main thing is the transformer(s). Those too
can still be found, or can be built; Hammond (Peter Dahl) is still in that
business.
The heater supply is typically just a suitably large 6.3 or 12.6 volt
transformer.
paul
