TMA

Tower Mounted Amplifier – generically referred to as an MHA TMA-D: Duplexed Tower Mount Amplifier that combines Tx and Rx ports from the radio system and connects to a single antenna.
TMA-S: A receive only Tower Mount Amplifier is installed between the receiving antenna and the radio to boost weak signals.
TMA-DD: A dual duplex tower mount amplifier used for radio systems with a single transmission line connection for transmit and receive.