Xref: utzoo sci.electronics:6165 rec.ham-radio:10731
Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!noao!asuvax!hrc!xroads!wiz
From: wiz@xroads.UUCP (Mike Carter)
Newsgroups: sci.electronics,rec.ham-radio
Subject: Re: Need frequency information for microwave transmitter
Keywords: 96856
Message-ID: <690@xroads.UUCP>
Date: 10 May 89 00:32:19 GMT
References: <5847@brspyr1.BRS.Com>
Reply-To: wiz@xroads.UUCP (Mike Carter)
Followup-To: sci.electronics
Organization: Crossroads, Phoenix, AZ 85046
Lines: 29


Regarding the garage door opener question:
 

I highly doubt that the dip switches CHANGE the FREQUENCY.
They, as with 99.9% of the rest of automation products, change the pulse
count or CODE sent to the receiver. The receiver is SET at a FCC approved
frequency. Normally a company receives 1, maybe 2 frequencies to run their
production on with garage door openers.
It is then up to engineering to develope a smei-fool proof (hah hah ;-)
way of discerning the owner from the guys next door.
If you change the dip switches, you are changing the code sent via the
oscillator to the receiver. You must then change the code at the receiver
to match what your transmitter is set for.
 
If they indeed DID change frequency, 9 dip switches would enable you to
go almost anywhere within the spectrum.
Like I said...I doubt it.
 
The FCC wouldnt approve.
 
Enjoy!
 
	-Mike
-- 
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= Mike Carter  N7GYX, Phoenix AZ| Q: Why did the Chicken cross the road  ?  =
= hplabs!hp-sdd!crash!xroads!wiz| A: To ESCape the Main Menu .              =
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