[EAS] RWT trigger detection
Dale Lamm
DLamm at whbc.com
Thu Jul 5 17:39:55 CDT 2012
[snip]
With all the remotely located EAS boxes at transmitters, especially at
full power translators, owned networks, and other difficult to access
locations, what would the the practical thought be on a means to have
the box itself look for an embedded code (think DTMF string) to activate
the RWT or forward a message (think RMT).
The source audio cut would carry the DTMF string at the end of the EAS
intro for stations or networks who wish to automate their tests and
don't have closure capability.
[end]
Ham radio repeaters are controlled by DTMF all the time, so the concept
is do-able from a technical point of view.
At one time we controlled a Marti repeater over a dial-up POTS. At the
repeater site, a Broadcast Tools box auto-answered and decoded DTMF
tones, firing relays to control the Marti transmitter.
How about using a channel on the site's remote control to pull in a
relay which initiates the RWT? Understand this is not workable for
un-managed translators.
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