Model Number: BT-XX40B Brand Name: BOOSTEL Key Specifications/Special Features: The RF repeater (RFR) is designed to provide a more cost-effective solution than adding a new base transceiver station (BTS) to improve signal coverage and communication quality in GSM systemAnd its easy installation and maintenance can help carrier get fast returnThe repeater is working as a relay between the BTS and mobilesIt receives the low-power signal from BTS via the donor antenna, linearly amplifies the signal and then retransmits it via the coverage antenna to the weak/blind coverage areaAnd the mobile signal is also amplified and retransmitted to the BTS via the opposite direction.