Tim,
Several burglar alarm manufacturers offer a duplex wireless link that is
essentially the guts of a bare-bones cellular phone in a metal box with all
of the audio and control lines brought out to a connector. Such devices
are similar in concept to the "data radios" that are used in SCADA systems,
and which incorporate a single-channel circuit board normally used in a
portable radio.
ENG journalists use a similar device to send taped interview audio back to
the studio when it's impractical to elevate the link antenna from a remote
truck. Distributors of broadcasting equipment carry several versions of
this link radio.
Finally, the vendors of automatic vehicle location systems use
off-the-shelf cellular link radios to periodically send and receive
location and assignment data. Although most of these radios carry digital
data, the ones I have seen are also available in models that handle two-way
voice.
73, Eric Lemmon WB6FLY
> Tim Horvath wrote:
> I have a repeater in a remote area with no phone service. Can I use a
> cell phone and interface it to my CAT-1000 controller? If so, how? I
> want it to receive and send calls. Thanks, Tim
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