7 Battery Backup Unit
There are mainly two applications the BU-872 Battery Backup Unit will form together with the TR-
810 Transceiver.
Last Resort Radio
The Battery Backup Unit is designed to provide the TR-810 with DC power when mains power fails.
This way the TR-810 can maintain communication with aircrafts when all other communications on
the airport have failed.
ManPortable
The ManPortable will give the same Last Resort Radio feature, but will also be portable. The
ManPortable will, in addition to the Battery Backup Unit, also be equipped with a compact antenna
and a carry bag. The ManPortable carry bag is design to give the radio equipment good protection
against rain and daily use.
84417_O&I_TR-810_E Battery Backup Unit Page 7-2