[RFI] Garage Door RFI

[David Robbins]

Had a neighbor who had a problem like that...  the funny thing is that it seems to affect operation even when the bulbs are off!  how does that work???

David Robbins K1TTT
e-mail: mailto:k1ttt at arrl.net
web: http://wiki.k1ttt.net
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-----Original Message-----
From: RFI [mailto:rfi-bounces+k1ttt=arrl.net at contesting.com] On Behalf Of Jim McCook
Sent: Friday, June 12, 2020 13:37
To: RFI List
Subject: [RFI] Garage Door RFI

For years I've easily opened my garage door with the car's remote system from 400 ft. away.  A few weeks ago I noticed that was no longer possible.  Even from my own driveway it was often hard to open it.  I had installed a couple of 11w LED bulbs in the main motor unit.  I had no concern, since I have 35 Cree LED floods in my house that do not create noise beyond a few inches.  This was different.  Those bulbs generated noise in the 300Mhz spectrum that interfered with the reception from the remote.  Replacing them with 23w CFL lights solved the problem. Beware of LED lights in a garage door opener!!!
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