G - Physics – 05 – B
Patent
G - Physics
05
B
351/13, 342/2
G05B 19/00 (2006.01) G05D 3/14 (2006.01) H01Q 3/00 (2006.01)
Patent
CA 1067203
APPARATUS FOR REMOTE CONTROL OF ANTENNA ROTATORS Abstract of the Disclosure Apparatus for controlling the position of an an- tenna rotator from remote locations includes a sender unit which generates desired antenna position information and a control circuit associated with an antenna rotator. The sender includes a dial for selecting the desired antenna position, a control transmitter responsive to the position of the dial for providing an output at a first frequency containing the antenna position information and a holding circuit for continuing the output of the control trans- mitter until the antenna reaches the desired position. The sender also includes a receiver responsive to a signal at a second frequency from the control circuit for ter- minating the operation of the control transmitter. The antenna control circuit includes a receiver tuned to the first frequency to provide an electrical signal represen- tative of desired antenna position; circuit means for comparing this signal to an electrical signal from the antenna rotator representative of the actual antenna posi- tion, and from these two signals, control signals are applied to the antenna rotator to cause it to rotate to the desired position; and a release transmitter for gen- erating an output at the second frequency when the an- tenna rotator reaches its selected position. When a plu- rality of senders are used, each sender is provided with a circuit to inhibit any output from its control trans- mitter whenever another sender is in operation. - 1 -
278969
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