It had a lid and louvered
vents on all sides on the ends where handles.
I removed the lid and one
handle and stood it on end then set about making an
amplifier to fit.
The transformer is a 450 by
450 volt that came out of an early TV camera control
unit and I bolted it to what is now the bottom along
with the electrolytic capacitors etc.
It gives a good weight and
the case now stood on end is very stable and would be
difficult to knock over.
The height of the power
supply is 5,inches which leaves me with 14 inches to
contain the valve amp chassis and above that the pi tank
I have used a small
computer fan, which is not required all the time. due to
the vents in the side of the case.
I made sliding supports for
the valve amplifier chassis and above that the pi tank
I have placed pictures
The finished amplifier
easily gives the legal limit on all bands from 160
through 80, 40, 20, and 17, it then falls off to about
250 watts on 10 meters.
Not bad for a footprint on
my bench of only 7 inches by 9 inches.