Type 752 radar is a Chinese navigational radar used by Chinese merchant ships and ships of the Chinese navy. Developed by Shanghai 4th Radio Factory in the mid-1960s, it's the first Chinese navigational radar that utilizes transistors. The only vacuum tubes used in this radar system were in the transmitter and display.^[1] Development began in 1965 and was completed in the following year. Om 1969, an improved version Type 752-Jia (752甲) was developed.^[1] Type 752 radar utilizes a slotted array antenna, which replaced the parabolic antenna previously used on earlier radars and the maximum range is 48 nautical miles.^[1] In addition to navigation and surface search, Type 762 onboard Chinese naval vessels is also used as low altitude surveillance radar.^[1] In addition to Shanghai 4th Radio Factory, Type 752 radar is also manufactured by Shanghai 101st factory and by the end of 1990s, a total of 1705 were produced.^[1]