The PRO-TRI 174/380-520/760-960 is a Triplex Filter (Multiplexer) used for combining /splitting 3 LMR/PMR radios, a VHF, a UHF, and an LTE to/from just one antenna. It comes in 2 versions both with SMA connectors, one for low/medium power up to 30 W per radio and one for high power radios up to 150 W per channel.
"The PRO-COM450-HDAR-4 is an integrated single tray (19"") 4 channel radio 450 MHz combining solution, housing a hybrid Tx hybrid combiner, duplex filter, active Rx multicouplers and preselector. Tx power per channel is 50 W. It also comes in a 100 W per channel version. It is highly used in UHF 340-470 MHz LMR/PMR/DMR radio base stations for combining/splitting channels to just one TX/RX antenna."
