The FMAD1239 is a 50 Ohm precision adapter with a TNC male to TNC female configuration and a straight body geometry. It operates across a wide frequency range from DC to 18 GHz, featuring a maximum VSWR of 1.15:1 and a typical insertion loss of 0.22 dB. Constructed with a passivated stainless steel body and gold-plated beryllium copper contacts, this adapter ensures durability and reliable performance. It is well-suited for precision test and measurement, general-purpose testing, and use as a connector saver to prolong the life of equipment ports.