A stationary antenna may be mounted upon the pendulum element 86, the only restriction being that at least a substantial portion of {TAIL ~ the housing} 19 or the cover 21 be of substantially electrically non conducting material to satisfactorily enable signal emission from {HEAD ~ the housing assembly} 
A stationary antenna may be mounted upon the pendulum element 86 , the only restriction being that at least a substantial portion of { TAIL ~ the housing } 19 or the cover 21 be of substantially electrically non conducting material to satisfactorily enable signal emission from { HEAD ~ the housing assembly }
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