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Garage door opener codes

Posted by John Sprung on March 23rd, 1999 11:16 AM
In reply to Garage door opener - frequency by jethro pauker on March 20th, 1999 02:10 PM [Go to top of thread]

Way back in the '50's, my father had one of the
first garage door openers. The receiver was even
a vacuum tube device. In those simple times,
all the device looked for was any kind of radio
waves on its frequency, and it would activate.
Sidebands or harmonics or some such thing from
aircraft taking off from LAX would trigger that
garage door.

Today, the door openers almost always require a
digital code to be transmitted and identified by
the receiver. It's like the difference between
a simple latch, and a lock that only opens with
a key.

First, make sure that yours is the type that uses
a code. If it is, try changing the code. It
could be that sombody else nearby has the same
code. If it still opens on its own, try
disconnecting the receiver for a while. If it
still opens on its own, you have an intermittent
short somewhere in the other wiring to the opener.
If the problem is the receiver, get a different

There's absolutely no way that the actual motor
or any of the mechanical parts have anything to
do with it.

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