"Me" wrote in message
...
In article ,
"david" wrote:

Hi all
Is there an easy soloution to stop the interfrence that florescent lamps
the
12volt ones from tandy/dick smith cause to radio reception.
thanks
David

that's an easy question....the answer.....TURN THEM OFF.......



Me

OK guys...its sea story time! After several years of fighting florescent
desk lamps in US Navy HF receiver sites (110 VAC versions) using the turn
them off, get them out the building policy, I was shocked to see a new
construction building in Alaska having florescent fixtures being installed
in the ceiling. Not only that, but the Naval Research Lab was supplying the
fixtures as GFE (government furnished equipment). This was in 1970 and I was
very surprised to find out there exists special ballasts and fixtures for
florescent lights in radio reception areas. The diffuser cover over the
tubes had a very fine wire mesh laminated into the translucent material and
grounded to the fixture case. We powered up a fixture in the building and I
used a Stoddard NM25 RFI meter and swept the HF spectrum. The fixture was
quiet with the diffuser in place, and fairly quiet with the diffuser open.
Bottom line--there are at least 110VAC RFI reduction fixtures available. I
have no idea what the taxpayers paid for them.
73
Doug K7ABX