Hello Chuck
Thank you for your reply.
Its just an AM/shortwave reciver it makes no diffrence if it works from the
ship supply or the radios internal batteries.
the florescent lamps internals are a transformer a switch a transistor on a
heat sink 3or 4 capactors and a diode which i disabled to avoid the .6volt
drop that seemed to reduce the interfrence a bit (i think).
the above is from memory I'd have to open one up again to be more accurate.