A GE helical 26W bulb type 26 FLE263/.2.SW produces a robust signal around
2.4 MHz -- and the antenna is 180 feet away from the basement where I use
it. Screwed into a motion-sensor the frequency is lowered to a MARS
channel used here in MI.
2.64 MHz -excited lamps have already been noted to cause interference; they
are coming into commercial use in many places .Although rated FCC Class A,
their emissions do add; illuminating the side of a building, for example,
nor only do they add, the wiring provides an efficient antenna. And there
are a LOT of Chinese versions coming in via Internet orders; it seems some
are designed as "grow lamps" with a spectrum tailored for plants. Energy
efficient, they also create less of a hot spot detectable from DEA aircraft.
Cortland
KA5S
> [Original Message]
> From: KD7JYK DM09 <kd7jyk@earthlink.net>
> To: <rfi@Contesting.com>
> Date: 11/29/2010 1:39:31 PM
> Subject: [RFI] CFL Bulbs that are OK!
>
> I have had up to 18 CFLs, purchased from WalMart, General Electric, 13W,
> part number FLE13HT2/2/XL/SW running close to radio equipment/antennas
with
> no detectable noise.
>
> it is a "soft white" spectrum bulb, I think it is a replacement for a 60W
> incandescent.
>
> There was another model, I forget which one that ONE bulb eliminated all
> reception at least through VHF. if I find it again, I will post the info
> here.
>
> Kurt
>
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