In the US Air Force it is called RAPCON , and in the US Navy as a RATCF . Typically, the TRACON controls aircraft within a 30 to 50 nautical mile radius of the airport at an altitude between 10,000 and 15,000 feet .
The system, Japan’s first full Radio Range Finder (RRF – radar), was designated Mark 1 Model 1. Contracts got to three corporations for serial production; NEC built the transmitters and pulse modulators, Japan Victor the receivers and related shows, and Fuji Electrical the antennas and their servo drives. Dipole arrays with matte+-kind reflectors had been utilized in separate antennas for transmitting and receiving. A prototype set working at 4.2 m and producing about 5 kW was completed on a crash foundation...Read More