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Re: [RFI] Cree LED Light Bulb

To: rfi@contesting.com
Subject: Re: [RFI] Cree LED Light Bulb
From: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Mon, 11 Aug 2014 01:27:56 -0400
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
On 8/10/2014 8:55 PM, Kim Elmore wrote:
We have a recessed can light in our shower. The tag inside states that a 60 W incandescent in the max it can accomodate, but even a 60 W reflector bulb has pretty wimpy output. I'd beenusing a 150 W equivalent 42 W CFL, but they don't last long.

We have all CFLs through the house. Excluding the garage (4 150W equiv) and basement (14 4' fluorescent tubes) , Out of 17, I've only had 2 fail in the last 2.5 to 3 years. I only have a single sub mounted CFL (in a can) over the shop entrance.. It's been on pretty much 24 X 7 X 365 for a good 3 to 4 years. The main lights in the shop are 22 full spectrum 75 Watt, 8' tubes and the electric use shows I spend a lot of time out here <:-)) .

None of the CFLs or tubes can be heard, AM broadcast through 440.

The "turn out the lights every time you leave the room" is a guarantee of a short life for a CFL, so the Many off/on cycles of a bathroom light would mean a short life although the newer ones are lasting longer.

LEDs are "expensive", but last a long time and use little power and "they should" get much cheaper over the next few years as production ramps up.


Roger (K8RI)

Based on what I've seen here, I went to Home Depot and snagged a Cree 75W equivalent (18 W consumption) flood light. It is quite bright and, as far as I can tell, RF-quiet at HF. I listened on on the AM BC band and 160-10 m during the day (so 80 and 160 are quiet) and heard nothing from it it. I also hear nothing from it on 2 m or 20 cm. So far, so good!

Kim N5OP

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