MX72 Antenna Duplexer,The MX72N duplexer is a series of inductance coils and capacitors that acts as a band-pass filter.Used in different frequency, can not transmit at the same time.The MX72N duplexer can be used in two different ways. HF-VHF/UHF Transceiver DuplexerCombines the output of the HF/VHF transceiver and the output of the UHF transceiver so that both transceivers can be connected to the same antenna. Function:Can also be used to sepa e UHF/VHF transmissions from UHF transmissions so that one transceiver can be connected to two antennas. Note:The MX72 VHF+UHF Duplexer is designed for indoor use.If you use the MX72 VHF+UHF Duplexer outdoors, it should only be used for short periods of time under good weather conditions. Do not use the MX72 VHF+UHF Duplexer outdoors when there is any kind of precipitation. Quality Assurance: As a professional seller, we offer high quality products and thoughtful services. Each product must be strictly inspected to ensure reliable quality. Please rest assured to buy our products, I hope you have a pleasant shopping experience. Specification: Condition: 100% Brand New Item Type: UHF+VHF Duplexer Material: Alloy Color: As picture shown Cable Length: Approx. 30cm/11.8in Ope ing Frequency: 144 - 148MHz & 400 - 470MHz Endurance: 144 - 148MHz: 100W 400 - 470MHz: 60W Isolation: 60dB Insertion Loss: 144 - 148MHz: <0.2dB 400 - 470MHz: <0.4dB Standing Wave io: VHF: <1.15, UHF: <1.19 Impedance: 50 ohms Coaxial Feeder: 5D-FB (30cm) Size(WxHxD): Approx. 74 x 33 x 63mm/2.9 x 1.3 x 2.5in Interface: MJ-MP MP Package List: 1 x MX72N UHF+VHF Duplexer