Have not actually built the device you need but there should not be any
reason that a small relay logic control panel using readily available
industrial quality "IceCube" control relays wouldn't do the job.
The voltages involved are low, you wouldn't be switching under load, and
the relays are simple to wire. Possibly use (2)-4 pole relays (very
common) per rotor, to your existing 8-wire rotor control cable add one
unique control wire per rotor plus a common to 'select' the rotor you
want, with say a 3 or 4 position 'selector' switch at the station, and
you are in business.
Be glad to detail the diagram if you like and fax to you.
73
Ron
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