bengaluru armed antennas receivers ham radio enthusiasts set three hour hunt hidden transmitter km radius palace road bengaluru coming months competition organize day of remembrance celebrations amateurish radio club see commissioned ham radio receiver operators shortwave used refer unlicensed ham radio manipulator battle bid triangulate location indicate quick possible three hours signals sent sender foxes people hide transmitter first signal transmitted participants father high rooftops tall terraces directional feeler receive guiding antenna test signal strength directions get closer signals get use attenuators aforesaid satya civil engineer variant last always foot make way shrubs thorns since transmitter hidden place hidden top hillock klick nice road interahamwe contact operators countries guest hb prabhakara sastry judge high court radio amateur since pointed ham radio moved beyond hobby today even expend disaster management latest good example kerala floods hundreds ham radio operators rose affair locals necessitate flood relief amateur radio ham radio spans years one oldest forms technology social network special thrill able reach people overseas countries said ramesh kumar bangalore amateur radio club ham radio operators antarctica mexico north still