AIRBUS TETRA base stations form the heart of a TETRA network
TB3 is a modular 1 to 8 carrier base station. The basic cabinet TB3 has a capacity of four carriers (4 to 16 channels). The number of carriers can be increased up to 8 carriers (32 channels) by means of an extension cabinet attached to the basic cabinet.
Diversity and high antenna gain
TB3 contains six receivers per carrier – compare this to the two or three offered by other base stations on the market. Using advanced diversity combining methods, this allows to build three virtual receive sectors. This means that the base station provides both diversity and high antenna gain.
Key functionality
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Modular and powerful. TB3 Base Station 380-400 MHz Indoor (TB3 380i) is a modular base station.
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There are 1-4 carriers in a basic cabinet and up to 8 carriers with extension cabinet.
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There are four channels per carrier, one of which is reserved for the main control channel.
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This means that the maximum number of traffic channels is 15 for the basic cabinet and 31 for the extension cabinet option.
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TB3 works with standard terminals.
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The air interface between terminals and TB3 base station meet the ETSI TETRA Air Interface standard.
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Flexible topologies.
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TB3 supports several different network transmission topologies with four 2 Mbit/s interfaces or native IP in use.
Details
TB3 variants for different frequency bands:
- TB3 330: 330 – 360 MHz
- TB3 350: 350 – 368 MHz
- TB3 380: 380 – 400 MHz
- TB3 410: 410 – 430 MHz
- TB3 450: 450 – 470 MHz
- TB3 800
Max. power at top of cabinet
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25 W
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40 W (with combiner by-pass configuration and duplexer)
Dynamic sensitivity at top of cabinet
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Guaranteed 112 dBm (TCH 7.2, BER 4%, TU50) without diversity
Number of receivers per radio
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6 receivers with MRC for e.g. three-sector X-pol panel antennas
Supply voltage options
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230 VAC (184 VAC…276 VAC)
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48 VDC (-36 VDC…-60 VDC)
Power consumption
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Nominal 0.4 kW with one TTRX at 65 W/100% duty cycle
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Power consumption varies according to the traffic volume
Width x Height x Depth
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60 x 162 x 48 cm, one cabinet
Weight (max.)
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200 kg (1 cabinet), 380 kg (2 cabinets)
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Four E1 interfaces with inbuilt multiplexer and loop protection capability with remote configuration.
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Support for satellite transmission.
TBS management
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Integrated into the DXT exchange
O&M functions
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Remote and local configuration
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Remote and local alarm handling
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Remote and local software downloading
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Remote and local test services
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Eight remote outputs
Additional base station features
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Superior and versatile coverage solutions
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Intelligent Radio Resource Management
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Fallback
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Automatic Main Control Channel change-over
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Modular design for redundant base station main units
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Jamming detection
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Dynamic air encryption with two simultaneous encryption algorithms
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Adaptive random access window for congestion control
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Additional signaling channel for automatic Vehicle Location use
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Load directed roaming
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Dynamic channel allocation between voice or packet data
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Optional Global Positioning System (GPS)
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Ready for TETRA Enhanced Data Service (TEDS)
Downloads
