Jon,

In addition, switching power supplies can be rather noisey and
interfere with radio reception but they are more efficient than linear
supplies. The original supplies were linear power supplies. Linear
power supplies are somewhat wasteful but they work well in the radio
environment. While being large and heavy, I would still like to get an
original supply for this radio along with the transmitter. I did find a
complete setup for 900 dollars in Tampa but I don't have the time to go
get it right now.

Tracy