BTG/TX RX Systems brand, Compact Tower-Top Amplifiers (TTA) are high performance, quadrature-coupled low noise amplifiers (LNA) designed to increase the performance of a Base Transceiver Station (BTS) while ensuring reliable communications for critical Public Safety applications.This increase in sensitivity can make up for the imbalance between mobile and handheld users in critical systems. Our Broadband Receiver Multicouplers provide unequalled performance in a 1-rack unit (1-3/4 inch) space-saving package. The high-performance LNA’s exhibit a very low noise figure while providing a (100% measured) 3rd order output intercept point in excess of +40 dBm. The multicouplers are designed with a minimum excess gain of 10 dB which gives maximum sensitivity in rural applications.
TX RX Systems has designed application-specific multi-cavity Preselector filter products for use in limiting the bandwidth in front of a multiple-receiver system. We also design Post Filters (or Post Selectors) for use after a multiple-transmitter system. Size and complexity range from a model built from three helically-loaded 1.3-inch rectangular resonators for relatively low-selectivity receive-only applications, where 2 dB of loss can be tolerated, to four 6.625-inch cavities that can handle 400 watts with high selectivity and loss of 1 dB or less.