Opek DU-500 VHF/UHF Indoor Antenna Duplexer w/ SO-239, PL-259 Male Connectors VHF/UHF Indoor Duplexer Frequency Bandwidth: 1.3-225 MHz (VHF)/ 350-540 MHz (UHF) Power Handling: 500 Watts (1.3-35 MHz)/300 Watts (50-540 MHz) Insertion Loss: Less than 0.2db Isolation: 60 dB