Ok, then the interference is being radiated. Take the radio
out on deck and see if the interference drops to an
acceptable level when you are 10-15 feet from the lamp. If
so, then the answer may be to use an external antenna.
Nothing elaborate is necessary. Maybe a twisted pair from
the radio antenna jack to the antenna would help cancel any
radiation from the lamp to the feedline.

Can't think of anything else to try that wouldn't be "over
the top". Someone else may have a better suggestion.

Good luck, David.

Chuck








david wrote:
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.