On Fri, 7 Mar 2014 19:21:59 -0800 (PST), "
wrote:

Don't you have an oscilloscope? Loosely coupling the scope input
to the transmitter, (laying a wire nearby), you should be able
to see if the signal is being amplitude modulated.

According to the original posting, he's 9 miles from the transmitter.
A 100MHz scope will work, if he can find a 9 mile long scope probe.
Also, if the modulation is FM, one can't easily see it with a scope.
However, the easy way is to read the FCC ID off the transmitter or a
receiver, look it up on the FCC ID data dumpster, and reverse engineer
the specifications.

72 MHz is the band assigned for RC (radio control) aircraft only (no
model cars allowed):
http://radiocontrol.wikia.com/wiki/72_MHz
http://www.modelaircraft.org/events/frequencies.aspx
I would not be surprised if this system is nothing more than a
repackaged RC device.



--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558