The modular design of the TB9100 base station makes for easy maintenance, expansion and upgrade of the base station. Front-loading modules slip into the 4U subrack, making building the system, replacing a module or accessing a system interface board fast and simple.

TB9100 modules include:

  • Reciter: contains the receiver and exciter
  • Power Amplifier: available as 5W, 50W and 100W modules
  • Power Management Unit: provides AC and/or DC power, and includes a standby power supply and an auxiliary power supply
  • Network Board: provides access to multiple interfaces
  • Subrack, Front panel and Control panel

Reciter

The reciter contains the receiver, exciter and network board, and has the following functions carried out via a state-of-the-art RISC processor and DSP:

  • controlling base station operation
  • storing the channel table and other configuration operation
  • holding licenses for optional features
  • collecting faults from other modules and generates alarms
  • running Task Manager.

Power Amplifier

The PA is available as 5W, 50W, and 100W modules, and receives the RF signal from the reciter to amplify it to the required level. The reciter controls the frequency based on its channel table and tells the PA what power level to use. The PA then waits for the key-up signal.

Power Management Unit

The PMU is sized to provide sufficient power for one subrack (50W channel or one 100W channel). It offers the following features:

  • power factor corrected
  • can operate with mains supply from 88-264 V AC (no switching required)
  • DC supplies have floating inputs so the supply can be negatively or positively earthed
  • optional auxiliary power output (12, 28 & 48V at 40W) for powering external equipment
  • optional standby module for maximum power saving capability.

Network Board

The Network Board provides comprehensive control of a Tait P25 system, including access to multiple interfaces such as Ethernet, line audio, digital inputs and outputs, and also a coaxial relay drive output, Tx Key, and Rx Gate.

Subrack, front panel, control panel

The TB9100 is enclosed in a subrack with a front panel and control panel. The passivated steel subrack is very compact at 4U high, and is designed to fit into a standard 19 inch rack or cabinet.

The front panel incorporates the cooling fans for the PA and the PMU. The user can replace both the front panel and the individual fans if necessary.

The control panel is mounted onto the subrack independently of the front panel. It features a microphone socket, controls keys, LEDs, speaker and volume control knob.