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