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2.4 GHz Half-Duplex Telemetry

Replace awkward remote-control cables with a licence-free ISM radio link. Ready-made modules make it quick and cheap to build.

2.4 GHz Half-Duplex Telemetry
Plenty of devices use a cable (usually multicore) for remote control purposes. Unfortunately, installing wiring of this kind is often none too easy and the result seldom looks attractive. The author was faced with the task of replacing not one but two bulky six-conductor control cables between his amateur radio shack and a rotator control unit on the roof truss. The outcome was a solution that is applicable for all kinds of purposes, providing four digital and four analogue radio channels in half-duplex mode.
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