[Elecraft] Filtering RFI from LED & flouresence Dimmer Switches

[Kenneth Christiansen]

Hi to the group
I have a 40 year old Sears chain drive door opener with two Cree led bulbs. They have been there for over 2 years with no problem using the remote. Every bulb in my house except the oven and refrigerator has been replaced by Cree led bulbs. I have run my K3 and P3 on each antenna on battery power with main AC off than turned everything on in order and no change in noise level. I consider myself lucky.
Ken W0CZ w0cz at i29 dot net

Sent from my iPhone

> On Jan 26, 2016, at 9:38 AM, Craig Smith <craig at powersmith.net> wrote:
> 
> Thanks for the garage door opener experience.   I had my door and opener replaced a few months ago.   The manual for the opener (Lift Master) specifically says not to use LED bulbs.   I was scratching my head over that but did use CFLs in the opener.  I asked the installer why that recommendation was there, and he said he didn’t know why LEDs couldn’t be used.   But, as your experience shows, it appears that it can indeed be a problem.   Probably the close proximity of the opener receiver to the poorly filtered (for some bulbs) switch-mode converters in the bulbs.
> 
> 73  Craig   AC0DS
> 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to wocz at i29.net