[Elecraft] Filtering RFI from LED & flouresence Dimmer Switches

[Craig Smith]

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