UHF / IF 4 Way Active CombinerThe Global Professional UHF IF Band Active 4 way Combiner has been designed to Combine a UHF or IF signal with low insertion loss. Dependant on configuration the unit can be powered either by Port 1 or external Power Supply Unit (PSU) available separately. The picture illustrates a N type combiner with DC blocking on ALL ports however other configurations are available It has: EMI proof enclosure Low insertion loss High Isolation N type & BNC