High Q Duplexers 

4 Cavities 40-108 MHz Duplexers

4 or 6 Cavities VHF 134-175 MHz Duplexers

4 or 6 Cavities Trunking 220-240 MHz Duplexers

4 or 6 Cavities UHF 375-512 MHz Duplexers

4 or 6 Cavities 790-960 MHz Duplexers

4 or 6 Cavities 1700-1900 MHz Duplexers