Thanks for that info Jim. I will be installing some FL's in my garage. I will check for RFI and get some magnetic ballasts if need be. Thats good to know.
73, Bob K6UJ On Nov 18, 2012, at 12:35 PM, Jim Wiley wrote: > > Are you talking about a CFL, or a conventional fluorescent lamp? Many > newer fluorescent lamps come with an electronic ballast. These are > sometimes a problem, in that the "ballast" operates like a switching > power supply, and if not designed or built properly, can emit copious > amounts of noise. A standard "old fashioned" magnetic ballast does not > have this problem. If your lamp uses the newer electronic ballast, > replacing the ballast with a magnetic type will fix the problem. > > > BTW, I have used many many CFLs and never had even the slightest bit of > RFI from any current production units. There was a small amount of > noise from some of the very early units of 20 years ago. The last one > of those I had was retired circa 1995. Most of the CFLs I have now are > from Costco, and are FEIT brand, made in China. Nary a peep from > them. We have about 35 CFLs in service now, and the 80-meter noise > level is about S2 on a bad day, closer to S1 normally. (I live in a > rural subdivision with underground power). 160 meter noise is about S3 > to S4, and S0 for 40 meters and higher. > > > - Jim KL7CC > > > In my shack, where a fluorescent lamp is located only four feet from the > rig, I recently switched from a 40 meter coax-fed dipole to a random > wire with counterpoise directly into the K3, no coax. Lots of noise. > Turn the switch off, noise goes away. Not a problem with coax-fed > dipole. --Andrew, NV1B > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
