POLYPHASER~Coax Low PIM DF/DM DC short ultra low PIM, bi-directional operation coaxial RF protector, engineered for high power of combined signals operating between 300 MHz and 1.2 GHz @ -26db Return Loss Type DC Block Buklhead Mount PIM Rated Standards CE Compliant, ROHS Compliant Connector DIN Surge Side ConnectorBi-Directional D Protected Side ConnectorBi-Directional D Frequency Range 300 MHz to 1.2 GHz RF Power 2.5kW Insertion Loss<0.1 dB Protocol/Applicationdc short/rf ultra low PIM, weatherproof when installed Motorola Part DSTUSXDFM