Specifications:
Max power Input: 50W
Frequency Range: 400-470MHz
Isolation Loss: V.S.W.R: Isolation: >80dB
Suppression: >80dB
Impedance: 50Ω
Operating temperature: -25℃-+55℃

Packages includes:
1 x duplexer

How to tune the frequency:
1.Prepare the tools inc. three-port network analyzer, dummy load with N male connector, 2 x RF cable from duplexer to the network analyzer , slotted screwdriver and spanner.
2.Power on your network analyzer, according the guidance on frequency network, using it to monitor the frequency, adjust the six screw poles with on duplexer slotted screwdriver to the frequency you want.