Base Station Antenna Systems 2008 Product Selection Guide - AVW

Teletilt ® Remote Electrical Downtilt Systemdc 2.1 Bias TeesABT-DMDF-ADBA and ABT-DFDM-ADBA dc 2.1 Bias TeesPort 1(RF/dc/data)AISG signals and dc power can be injected onto a coaxial cable run that feeds up a site, using acombination of the cost efficient ABT series dc 2.1 bias tees and an SMB port on the ATC300-1000Teletilt controller. The SMB ports (also known as layer one converter connections) on the controllermodulate the AISG signal, similar to what is done by a smart bias tee used at the bottom of a tower.With the signal pre-modulated by the controller connection, the ABT series dc 2.1 bias tee can beeasily used in place of a smart bias tee at the bottom of the tower.ElectricalPort 2(RF/dc blocked) ABT-DFDM-ADBAPort 3(dc/data)Frequency range698–960 MHz and 1710–2180 MHzAISG frequency2.0–2.3 MHzInsertion loss, typical0.10 dBIsolation for dc/RET data signals 50 dBImpedence50 ohmsPeak power, maximum12 kWAverage power500 W @ 883 MHz and350 W @ 1940 MHz (combined)Intermodulation