Good info Chris. Thanks for sharing with the group.
It would also be interesting what level of RFI you get at other distances
greater than 1.5 ft. I might try this before I reinstall my antennas on my
roof this spring/summer.
I have two CFL bulbs (forgot which mfr) in an outdoor (garage) fixture
approximately 40-50 feet from my ground mounted HF vertical. Been almost a
year now with no RFI on 80 thru 10 meters.
I have noticed some items like Cisco's wireless TV boxes generate a lot of
broadband RFI in close proximity, but the RFI drops off quickly with distance
(like around 30-40 ft). I still had my cisco boxes removed due to RFI to the
garage door openers only 2 to 3 ft away.
73, de ed -K0iL
-----Original Message-----
From: RFI [mailto:rfi-bounces@contesting.com] On Behalf Of Chris L. Parker
Sent: Sunday, February 22, 2015 6:39 PM
To: rfi@contesting.com
Subject: [RFI] Low RFI 60w CFL bulb
Hello Group,
A quick post regarding my RFI experience with CFL bulbs.
I recently bought 3 brands of CFL bulbs at the local big-box DIY store for a
nightstand lamp.
I placed my SW portable on the nightstand (about 1.5 feet from bulb) and
listened on 454 KHz, 4, 7, 14, and 21 MHz for RFI.
I heard significant RFI from the Philips EnergySaver Silicone Coating 14w =60w
featuring TuffGuard protection, soft white, shatter resistant, 790 lumens, 2
pack.
I heard significant RFI from the Cree 4Flow, 60w, 2700K, soft white, dimmable,
815 lumens, single pack.
I heard nil RFI from the GE energy smart, Bright from the Start, 60w uses 15w,
800 lumens, soft white, 2 pack.
Thus, I recommend the GE energy smart, Bright from the Start CFL bulb for RFI
sensitive applications. As always, YMMV.
Hope this helps.
Chris
AF6PX
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