The 7/16 DIN connector is an RF connector that can be used in the frequency range up to 7.5 GHz. It was developed in the 1990s for use in cellular networks, base stations, on radio antennas and other radio communications equipment.
The 7/16 connector is equipped with rubber seals and has silver-plated or gold-plated contacts, making it ideal for outdoor use. The inner diameter of the outer threaded ring is 7 mm, and the outer diameter is 16 mm. The 7/16 connector is considered to be extremely rugged.
The impedance of the 7/16 is 50 ohms, the return loss is 30 dB to 1 GHz, 28 dB to 2 GHz, and 21 dB to 3.0 GHz, the VSWR at a maximum of 1.30, and the contact resistance of the inner contact is only 0.04 ohms. It is specified for high voltages of 800 V, in a special version it can even handle 2.7 kVrms, and high powers with peak values of 3 kW can be transmitted via it.
Unlike the N connector, the 7/16 connector must be connected with a wrench. The 7/16 plug is specified in DIN 47223.