This garage door and opener system are not more than a year old. I
don't know the brand name, but it was not inexpensive. The door does
operate perfectly with the wall button. The service people have been
out and changed out both the receiver and the remotes. Still will not
operate. That's why the serviceman thinks it has to be some kind of
RF interference. Apparently he didn't have the equipment to trace it
out.

For the record, this home is in an older residential area near the
University of California Fullerton. No military installations that I
am aware of. Something at the University or local high school might
be doing it, but the high school is a couple of blocks away, and the
University is about 1/2 mile. If I were near there, I could bring one
of my receivers and trace it down pretty quickly, but I'm 500 miles
away.

Dick

On Thu, 26 Jan 2006 23:54:07 GMT, **THE-RFI-EMI-GUY**
wrote:

There have been problems with military use of the 300 MHz band for new
radio systems, but this would not cause the door to work only half way.

Assuming the neighbors problems are coincidental, check the
counterbalance spring for the door. They wear out or break and the
opener does not have enough power to work on irs own. By the way this is
not a DIY project because of safety concerns with the springs and the
repairs can be about $300.

Dick wrote:

My aunt, who lives in So. Calif., along with two close neighbors, is
suddenly having problems with garage door openers. Won't open. Stop
part way down, etc. I haven't heard of amateur radio having an effect
on modern garage door remote receivers. How about BPL? Don't know if
it can effect things in the 900 Mhz region, but thought I would ask if
anyone else has seen this.

Dick - W6CCD