[Elecraft] OT: LPFM transmitter wanted
Jim Brown
jim at audiosystemsgroup.com
Mon Feb 19 12:28:59 EST 2007
On Sun, 18 Feb 2007 15:19:28 -0800, Rod Ai7NN wrote:
>Anybody have a suggestion or two for a decent quality
>rig that couples to an MP3/CD-player, stereo...etc. Only need to get
>the signal 50-100ft or so.
A visit to places like Fry's Electronics or Best Buy will yield several
VERY low power FM transmitters intended for use with personal devices like
IPOD's. I'm using one to take streaming jazz from my computer to a few FM
receivers around the house. These are good for about 100 ft. All work with
self-contained antennas that are almost impossible to defeat (that is, to
attach a better antenna to), and dead simple to use. Thus, I believe that
they DO conform to FCC rules, which are written in terms of some very low
value of field strength at a defined distance (I think 100 ft), and that
non-defeatable antenna system. I paid $50 for the one I have, which
carries the Macally label and an FCC sticker of compliance.
The much higher power kits sold on the internet (100 mW and higher) are
NOT legal in the US.
If you have a legitimate use for low power broadcasting and can license
it, a well established company in PA called LPB makes the transmitters and
can assist you with licensing issues.
Jim Brown K9YC
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