One more thing, TIC RingRotors do not require the heavy duty wires that other
rotors do. That's because the TIC motor is small and wormgear drive-based.
#18 wire is good for 500 ft run. And, since they are 24VDC driven, the
control box shorts out the motor leads and stops the motor from turning when
shutoff due to the DC motor windings being shorted. The antenna is held in
place with the wormgear drive.
de: Bill, N3RR (Authorized TIC sales representative)
http://www.erols.com/n3rr/n3ringrotor/index.htm
D. Rodman, MD wrote:
> I, in fact, do rotate multiple rotors with single control lines from my
> station. I have two towers, 8 TIC rings and two stations. Each station
> has its own control box. The solution for me was a simple one, but it
> took several months to build when I set up the station in 1991.
>
> Each tower has a small building adjacent to it for placement of repeaters,
> packet and switching equipment. Each tower has a 24 VDC "booster" supply
> that supplies power to the rotors. The longest rotor (40 m yagi) is about
> 500 linear feet from the furthest station. I have a series of relays at
> each tower that switch each wire from the TIC rings to the control box.
> Each tower has enough relays for 4 rings. One set of wires runs
> underground in 4" PVC from station to towers. The 24VDC of the control
> box never sees the ring. It runs in #22 wire and would never turn a mouse
> at 500 ft! At the station, I have a "take no give" switch for each
> operating position. This uses a latching relay to "take" control of the
> single set of wires from the other station and regain rotor control. In
> this fashion each station can have control of all rotors, just not at
> the same time.
>
> It took a lot of planning to do this. It is not hard, just tedious. I
> haven't had one break down in 7 years, including multiple lightning
> strikes. Everything is well isolated for strikes with ICE surge
> protectors. The house has a perimeter ground with another set of surge
> protectors at the entrance to suppress any coupled energy from radials
> back into the miles of cable I have underground.
>
> 73,
>
> David J. Rodman, MD
> Assistant Clinical Professor
> Department of Ophthalmology
> State University of New York at Buffalo
>
> FAX 716-859-4565
> Office 716-854-1137
>
> e-mail: rodman@acsu.buffalo.edu
>
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