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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 Repeater, TETRAPOL Repeater, PMR Repeater, DMR Repeater

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 / TETRAPOLOptical Repeaters for tunnels and large infrastructure
  • Turnkey sites

Band Selective TETRA / TETRAPOL 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:

  Band Uplink frequency Downlink Frequency
ETSI Standard 38/40A 380-385 MHz 390-395 MHz
38/40B 385-390 MHz 395-400 MHz
41/43A 410-415 MHz 420-425 MHz
41/43B 415-420 MHz 425-430 MHz
45/47A 450-455 MHz 460-465 MHz
45/47B 455-460 MHz 465-470 MHz
Cross Frequencies 38/40AX 390-395 MHz 380-385 MHz
38/40BX 395-400 MHz 385-395 MHz
41/43AX 420-425 MHz 410-415 MHz
41/43BX 425-430 MHz 415-420 MHz
45/47AX 450-465 MHz 450-455 MHz
45/47BX 465-470 MHz 455-460 MHz
  SELECOM TETRA TETRAPOL Repeater Frequency Plan

SELECOM TETRA TETRAPOL Repeater Channel Selective  

Channel Selective TETRA / TETRAPOL 400 MHz Repeaters

TETRA / TETRAPOL 400 MHz repeaters SELECOM are also available as channel selective repeaters.
A "Smart Digital Filter" option can be added independently on the Uplink and / or on the Downlink.
This digital module further:
  • Select up to 4 sub-bands to repeat (thus eliminating others)
  • Program each of these sub-bands independently:
    • Center frequency
    • Bandwidth (100 kHz to 5 MHz)
    • Gain

With this feature, the repeater can then remove unwanted carriers in case of coexistence of several TETRA / TETRAPOL networks in the same location.


"Uplink Squelch" function

To allow maximum deploy repeaters RF / RF in a given area, connected to the same base station, it is necessary to have a function that cuts off transmission of the uplink channel when the repeater is not applied a communication.
Indeed, a RF / RF repeater, even if it does not retransmit carrier, returns a background thermal noise, very low. But the sum of all those little noises generates power noise which can desensitize the base station, which would limit the use of RF / RF repeaters.

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
  SELECOM TETRA TETRAPOL Repeater MUTE UL

 

DigiSeL TETRA/TETRAPOL/Public SafetyDigiSeL TETRA/TETRAPOL/Public Safety
Digital Selective Channel Repeater
TETRA/TETRAPOL/Public Safety
-Output power 17, 24, 37 dBm
- Digital Channel Repeater (12.5 Khz)
- Antenna and radiating cable compliant
- Wall or-mast mounting
- Outdoor or indoor box
- IP remotely monitoring 2G 3G 4G
 DataSheet PDF (455 Kb)

AIR Repeater™ TETRA / TETRAPOL 400 RF-RF AIR Repeater™ TETRA / TETRAPOL 400 RF-RF
- TETRA Repeater
- TETRAPOL Repeater
- Public Safety Repeater
- Output power +17, +24, +37dBm
- Digital Channel Filter (optional)
- Outdoor IP65 or indoor case
- Wall- or mast-mounting
- Antenna and radiating cable compliant
- IP Monitoring by modem GPRS, GSM-R or TETRA
 DataSheet PDF (630 Kb)

AIR Repeater™ TETRA TETRAPOL 400 RF-RF with BoostersAIR Repeater™ TETRA TETRAPOL 400 RF-RF with Boosters
- TETRA / TETRAPOL coverage enhancement
- Safety networks
- Confined areas difficult to cover
- Up to 8 active antennas
- Up to 10 dBm output power for each antenna
- Optimised coverage
- Antenna or radiating cable
- IP monitoring by GPRS, GSM-R or TETRA modem
- Channelized (optional)
 DataSheet PDF (630 Kb)

 
Micro-Repeater RF-RF TETRA / TETRAPOL 400Micro-Repeater RF-RF TETRA / TETRAPOL 400
- TETRA / TETRAPOL coverage enhancement
- Safety networks
- Small areas
- Autonomous equipment
- Up to +10dBm output power
- Plug & Play
- Gain Limiter
- Wall-mounting
 DataSheet PDF (376 Kb)

Optirep™ System TETRA / TETRAPOL 400Optirep™ System TETRA / TETRAPOL 400
- TETRA / TETRAPOL coverage enhancement
- Railway, road and waterway tunnels
- Buildings, mountain
- Up to 16 optical outputs(Power: +17, +24, +37 dBm)
- Off-air or TBS reception
- RF Emergency access
- Star and daisy-chain configuration
- IP Monitoring by GPRS
- OMC VisiOmc™
The system includes the optical master and remote repeaters.
 DataSheet PDF (893 Kb)

Catalog TETRA / TETRAPOL RF AccessoriesCatalog TETRA / TETRAPOL RF Accessories
Couplers, Antennas
 DataSheet PDF (1022 Kb)

High Insulation TETRA / TETRAPOL CouplerHigh Insulation TETRA / TETRAPOL Coupler
- High isolation TX/TX and RX/TX ≥ 76 dB
- Low TX loss ≤ 6 dB
- Compensation gain TX
- Allows 2 terminals on the same roof antenna
- Up to 100m cable from the antenna
- Critical areas : stadiums, airports, plants, …
 DataSheet PDF (199 Kb)