[TenTec] band conditions??

[Thomas Jednacz]

Howdy - could the units have switch mode power supplies instead of
transformers to reduce the voltage? Poor design switch mode supplies
generate LOTS of RFI.
Tom, W7QF

>>The few schematics I've reviewed (the actual schematics tend to be
trade secrets and the guts of these things are usually potted to make
quick reverse engineering a bit challenging) show that they run on AC,
using a transformer or running a string of diodes in series