TETRA / TETRAPOL Repeater

TETRA Repeater, TETRAPOL Repeater, INPT Repeater, TETRON Repeater, ASTRID Repeater, POLYCOM Repeater, BDBOS Repeater, VIRVE Repeater, RAKEL Repeater, NØDNETT Repeater, ESTER Repeater, SIRESP Repeater, PMR Repeater, DMR Repeater, UHF Marine Repeater.

TETRA BDA, TETRAPOL BDA, INPT BDA, TETRON BDA, ASTRID BDA, POLYCOM BDA, BDBOS BDA, VIRVE BDA, RAKEL BDA, NØDNETT BDA, ESTER BDA, SIRESP BDA, PMR BDA, DMR BDA, UHF Marine BDA.

TETRA Bi-Directional Amplifier, TETRAPOL Bi-Directional Amplifier, INPT Bi-Directional Amplifier, TETRON Bi-Directional Amplifier, ASTRID Bi-Directional Amplifier, POLYCOM Bi-Directional Amplifier, BDBOS Bi-Directional Amplifier, VIRVE Bi-Directional Amplifier, RAKEL Bi-Directional Amplifier, NØDNETT Bi-Directional Amplifier, ESTER Bi-Directional Amplifier, SIRESP Bi-Directional Amplifier, PMR Bi-Directional Amplifier, DMR Bi-Directional Amplifier, UHF Marine Bi-Directional Amplifier.

TETRA / TETRAPOL Repeaters (BDA - Bi-Directional Amplifiers) of SELECOM are used :

• To extend the coverage of private radio networks PMR (Private Mobile Radio), DMR (Digital Mobile Radio), LMR (Land Mobile Radio), PAMR (Public-Access Mobile Radio) at TETRA (TErrestrial Trunked RAdio) standard ;
• To comply with the obligation to cover national networks of public safety :ACROPOL in France, TETRON in Austria, ASTRID in Belgium, POLYCOM in Switzerland, BDBOS in Germany, VIRVE in Finland, RAKEL in Sweden, NØDNETT in Norway, ESTER in Estonia, SIRESP in Portugal at TETRAPOL standard ;

SELECOM offers complete and integrated solutions for TETRA network operators and operators of ERP (Establishment Receiving the Public), to ensure coverage of major infrastructures like shopping centers, exhibition halls, convention centers, areas confined such as service corridors, tunnels, underground car parks :

• TETRA / TETRAPOL repeaters medium and high power
• TETRA / TETRAPOL repeaters multi-antenna for areas complex to cover
• TETRA / TETRAPOL Optical Repeaters for tunnels and large infrastructure
• Turnkey sites

RF/RF TETRA / TETRAPOL/ DMR 400 MHz Repeater

In the basic version, TETRA / TETRAPOL 400 MHz repeaters are available in selective band with 5 MHz bandwidth and 10 MHz duplex:

• TetraReP: Band selective repeater 

​With its new design, the repeater TetraReP RF/RF has an option "Digital Smart Filter" configurable from 300 KHz to 5 MHz 

Thanks to this feature, the repeater can therefore eliminate carriers not wished when several TETRA/TETRAPOL networks coexist in the same localisation. 

• DigiSeL: Digital channel selective repeater

Thanks to its channel selectivity, ​the DigiSeL allows to handle up to 18 configurable channels (bandwidth 12.5 KHz) independently in frequency and in power. 

The DigiSeL RF/RF proposes two types of filters according to the customer need: 

• Fixes Filters (DL): channels and bandwidth configured factory and modifiable on user request

• Dynamics Filters (DL): channels and bandwidth configurable on-site and remote user

Therefore, the DigiSeL separates the desired signal from the other interfering signals in a ultra precise way.  

"Uplink Squelch" function

The principle is extremely simple:

• No communication is requested by a mobile in the area covered by the repeater ⇒ The UL channel is paused ⇒ No noise is emitted by the repeater
  A communication is requested by a mobile in the area covered by the repeater ⇒ The UL channel is operated within milliseconds ⇒ The communication is provided
• After a certain time, the repeater is no longer sought ⇒ UL channel is re-paused ⇒ No noise is emitted by the repeater