| 摘要 |
An extendable mast arrangement, that is supported on a mobile vehicle, having a telescopically extending mast and a mast accessory supported at one end thereof. The mast arrangement having a control system for effecting the movements and functions of the mast and mast accessories, that includes a wireless remote control that utilizes coded command signals to communicate instructions to the control system of the mast arrangement. The control system, including the remote control, utilizes spread spectrum modulation to encode and decode the electromagnetically transmitted control commands. Particularly, the control system uses frequency hopping modulation, a form of spread spectrum modulation, to encode and decode the command signals.
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