Comet CF-416B 1.3-170/350-540 MHz Duplexer w/Leads, SO239/PL259 N Male Connectors Duplexer with Leads Isolation: 60 dB Minimum Band Pass: 1.3-170 MHz / 350-540 MHz Connectors: SO-239/PL-259/N Male Max Power: 500 w PEP