CSA121x is a passive wideband RF splitter/combiner for antenna distribution systems. The CSA121A operates 470–960 MHz, handles up to 125 mW input and is DC-coupled for use with antenna boosters; it includes a 230/110 VAC supply. CSA121B and CSA121T cover 470–870 MHz with 2 W and 3 W input power, respectively. All variants provide 4 dB loss, 50 Ω impedance, and three BNC-F ports, with CSA121T capable of recovery of combiner loss when used with MTK952N.