The 438-89A-23005 from TX RX Systems is a Dual Duplexed Tower Top Amplifier (TTA) that operates at 806-824 MHz (uplink) and 851-869 MHz (downlink). It consists of Tx/Rx filters, a low noise amplifier (LNA), and lightning protection. This TTA delivers an RF gain of more than 12 dB and has a noise figure of 1.8 dB with an output P1dB of more than +16 dBm. The Tx-Rx filters provide a rejection of more than 85 dBc in the Tx band more than 50 dB in the Rx band. It has a return loss of more than 18 dB and an insertion loss of less than 3.0 dB.
The 438-89A-23005 requires a DC supply of 11-18 V and consumes less than 170 mA of current. It can be monitored and controlled via a LAN interface. This amplifier has a bypass mode that ensures a failsafe communication pathway even during equipment malfunctions and is designed for long-lasting performance with an MTBF exceeding 100,000 hours. It is available in an IP-68-rated enclosure that measures 337.0 x 130.0 x 101.0 mm and has 7/16 DIN female & Type-N female connectors. This TTA is ideal for 800 MHz public safety applications (narrow band segment).
