Bird TXRX 84-58-30-01 Signal Sampler, 350-520 MHz, 3x N female connectors. brbr Signal Samplers are non-directional taps for sampling RF signals from a main transmission line, with minimal effect to the power level of the signals on the main line. The sampled port can be connected to a Spectrum Analyzer for analysis and measurement, or connected to a low gain, distribution antenna in Signal Boosters systems to augment communications in buildings and tunnels. We offer a broad range of sampling levels to accommodate a wide variety of applications.brul liSignal samplers are used to check system performance while in-use./li liExtremely low insertion loss with sample values of 20, 30, 40 and 50 dB./li/ul