transmitter,launching insreuments of middle and short wave, satellite ground station, radar, short-wave communication, high-freq Detailed DescriptionOuter Diameter: ... , trans poser, launching instruments of middle and short wave, satellite ground station, radar, and short-wave communication, and the field of ... .70√√√√√√√√√≥14.00√√√√√√√√√≥15.88√√√√√√√√≥19.05√√√√√√√22√√√√√ coaxial cable copper tube