Path: utzoo!attcan!utgpu!news-server.csri.toronto.edu!mailrus!uunet!pilchuck!ssc!markz
From: markz@ssc.UUCP (Mark Zenier)
Newsgroups: sci.electronics
Subject: Re: TV tranmitter fron DAK
Message-ID: <989@ssc.UUCP>
Date: 11 Aug 90 04:41:17 GMT
References: <228@kaos.MATH.UCLA.EDU>
Distribution: usa
Organization: SSC, Inc., Seattle, WA
Lines: 30

In article <228@kaos.MATH.UCLA.EDU>, hgw@julia.math.ucla.edu writes:
> 
> I just received  my DAK catalog (Summer 90) and on the back is a produce
> for transmitting television signal through the house.  This is a short
> range (100 ft) transmitter which require a special receiver hooked up to
> your tv.  It claims that "now you can LEGALLY broadcast through-the-air
> on the just released 910-918 MHz frequencies to any TV in your home or
> office."  What is this just released 910-918 frequency?  Is this
> something really new?

Yes, Title 47 Part 15 of the Code of Federal Regulations was revised
in spring of '89.  This is the section of FCC regulations that 
covers license free transmitters, among other things (the main
one being the interference generated by personal computers).

One thing to be aware of is that there are many users of the band.

1. Government Radar
2. Industrial, Scientific, and Medical (diathermy, microwave ovens)
3. Vehicle Location Systems (Car 54, where are you)
4. Ham Radio

All of these have priority over a part 15 transmission.  All of
them can make you turn it off if you interfere with them.  All
of them can point to the fine print that says you have to accept
any interference from their transmitters.

markz@ssc.uucp

markz@ssc.uucp