🚀 go-pugleaf

I just wanted to say thanks to the number of people that offered
assistance with the Genie AT 390 remote control unit I asked about.
My question was, "what frequency is it?"   It turned out, quite
logically, that it is 390 MHz.  The remote uses a a pseudo-ramdom
square wave modulation that gives its output about a 5 MHz
bandwidth!!  This wide band modulation made it impractical to
measure the carrier fequency accurately on a digital counter.  I
solved the problem by borrowing a spectrum analyzer from our
microwave systems engineer and using a plastic screwdriver to
adjust the remote's trimmer cap for a spectrum centered on 390 MHz.
Now my remote activates the receiver from about 1/2 block away,
rather than a few feet!

Thanks to all who offered help whom I couldn't reply to via email.

Bill Mayhew
NEOUCOM
(wtm@neoucom.UUCP)