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