Do not use the MX72 VHF+UHF Duplexer outdoors when there is any kind of precipitation. The MX72 VHF+UHF Duplexer is designed for indoor use. 144 - 148MHz: 100W. 144 - 148MHz: < 0.2dB. The MX72N duplexer is a series of inductance coils and capacitors that acts as a band-pass filter.
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