DBSPECTRA's DB4368BPS2B 450 – 470 MHz two-channel single sub-band UHF public safety best practices transmitter combiner. The combiner consists of 8 in copper bandpass cavities. Each channel includes a broadband dual-stage isolator with 100 W load and RF sampling port. The sampling port provides the ability to tune each channel under power preventing system downtime concerns. The output of the combiner will have a 7/16 DIN Female connector;single sub band.