RADIO FREQUENCY (RF) TRANSCEIVERS AND CARRYING CASES THEREFOR SOLD AS A UNIT; ANTENNA ROTORS; ELECTRONIC AND MANUAL TELEGRAPH KEYS; PRE-AMPLIFIERS; WHIP ANTENNAS; CODE PRACTICE OSCILLATORS; RADIO FREQUENCY (RF) RECEIVERS; SPEECH PROCESSORS; ECHO CHAMBERS; ANTENNA BALUNS; COXIAL SWITCHES; AIR-WOUND COILS; MICROPHONES; DC/DC CONVERTERS; RECHARGEABLE BATTERY PACKS; DRY CELL BATTERY CASES; PROGRAMMABLE ENCODERS; BATTERY CHARGERS; WALL CHARGERS; MOBILE CHARGING CORDS; AND ANTENNA MAST CLAMPS AND THRUST BEARINGS SOLD AS A UNIT WITH ANTENNA ROTORS