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Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!leah!itsgw!brspyr1!miket
From: miket@brspyr1.BRS.Com (Mike Trout)
Newsgroups: sci.electronics,rec.ham-radio
Subject: Need frequency information for microwave transmitter
Keywords: 96856
Message-ID: <5847@brspyr1.BRS.Com>
Date: 8 May 89 21:15:49 GMT
Organization: BRS Info Technologies, Latham NY
Lines: 25


I'm seeking microwave transmitters of certain frequencies and need some
assistance.  I recently purchased a Sears garage door opener transmitter 
(Model 53708) which I assumed would have the frequencies I need.
Unfortunately, it appears to be frequency-adjustable, with no indication of
what the possible frequencies are.

The chip used is a TI TX8835 N 96856.  It is connected to a 9-dipswitch unit
with 3 positions per switch.  I'm assuming that this allows certain pins on the
chip to be placed high, low, or neutral.  As there are thousands of possible
combinations, I have no way of finding out what the possible frequencies for
this chip may be.

I'd greatly appreciate it if someone could e-mail me some information about
this chip; specifically, what frequencies it can produce and how certain pins
need to be tied to achieve them.  Many moons ago I had access to chip specs
manuals that would give me this information, but, alas, no more.

Please e-mail rather than post.  Many thanks in advance.
 
-- 
NSA food:  Iran sells Nicaraguan drugs to White House through CIA, SOD & NRO.
~~~~~~~~~~~~~~~~~~~~~~~~Michael Trout (miket@brspyr1)~~~~~~~~~~~~~~~~~~~~~~~~~
BRS Information Technologies, 1200 Rt. 7, Latham, N.Y. 12110  (518) 783-1161
"God forbid we should ever be 20 years without...a rebellion." Thomas Jefferson