[EAS] RWT trigger detection...more info

[Cross, Robin]

IIRC the Sage decodes a RWT ascii code and then eliminates the 1050 Hz tone.  Then it starts recording /sending the rest of the RWT.  Maybe some creative thinking could use that.

Robin Cross
Chief Engineer KCUR
816-235-2880 Office
816-235-1551 Receptionist

Mike McCarthy <towers at mre.com> wrote:

Hi Dale,

The automation system we operate can produce a closure as part of a
traffic scheduled macro. Our goal is to have two macros.  One for the
simple RWT and a second more interactive macro for the RMT.  It will
automatically insert the EAS macro in place of a PSA we'd traffic in the
approximate location(s) of when we would expect the RMT to arrive.

The DTMF aspect simply extends the command reach.

At present, we feed each TX individually and each has their own EAS box
regardless of location.  There is a combination of local and remote. We
know we could run a common EAS box for the RWT's. But the remote sites
have extenuating sourcing issues which I'm not going to bore the list
which requires the box be at the TX.

My query wasn't necessarily for validation. It is simply to see whether
the MFR's ***could*** do it and interest in the community at large. If
so, the rest is logistics.  If not, I'll just go about it using an
external decoder.

And if there still is a simpler manner to accomplish this, I'm listening.

Cheers....

MM

On 7/7/2012 5:37 PM, Dale Lamm wrote:
> Mike, it wasn't clear to me a day or two ago whether you were looking
> for new ideas or validation of your own idea.
>
> It would cost the manufacturer money to add the feature, even if no
> actual hardware change was mandated. Deciding whether to add your
> requested feature or fix bugs or add more frequently requested features
> is of course up to the manufacturer. Your mention was the first time I
> have ever heard of the need to remotely command an EAS box using in-band
> signaling.
>
> The idea would be a useful means of eliminating labor and potential
> sources of error, especially in an environment where one program
> provider controls multiple call-lettered transmitters.
>
> There is one blindingly obvious method to achieve what you want with
> materials you likely already have on hand, but only if these two
> conditions apply to your case:
>
> 1) your automation can produce a relay closure in response to an item in
> the traffic log
>
> 2) your program circuit is feeding just one outlying transmitter, or
> multiple transmitters using the same call letters
>
> If this is your situation, let me know and I'll tell you how to produce
> an RMT for your outlying transmitter(s).
>
> Dale

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