The JLP-40 is a tactical air defense radar designed to use with height finding radars such as the JLG-43 Radar. It is similar in design to the Russian "Bar Lock" series radar and may have been derived from it as part of the sale of the SA-2 system from the Former Soviet Union in the early 1960s. It features the same arrangement of the two large scanners attached to front and ear sides of a rotating cabin that houses the transmitter/receivers.