[RFI] Low RFI 60w CFL bulb

[EDWARDS, EDDIE J]

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 at contesting.com] On Behalf Of Chris L. Parker
Sent: Sunday, February 22, 2015 6:39 PM
To: rfi at 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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