Funksiɔn:

●Filter radio frequency input signals from antennas and radio frequency output signals from radio stations. Filter radio frequency input signals from antennas and radio frequency output signals from radio stations. Filter radio frequency input signals from antennas and radio frequency output signals from radio stations. Filter radio frequency input signals from antennas and radio frequency output signals from radio stations.

●Air conditioning filter central frequency can be automatically controlled and switched according to the working frequency of the very high frequency aviation communication ground station used to support the very high frequency aviation communication ground station. Air conditioning filter central frequency can be automatically controlled and switched according to the working frequency of the very high frequency aviation communication ground station used to support the very high frequency aviation communication ground station.