The 8743B Reflection Transmission Test Unit is a wideband RF power splitter and reflectometer with calibrated line stretcher. Pushbutton operated for either transmission or reflection measurement with network analyzer. Designed for use with the 11610B Test Port Extension Cable. Frequency range: 2 to 12.4GHz. Impedance: 50-ohms. Source reflection coefficient: < 0.09, 2.0 to 8.0GHz; < 0.13, 8.0 to 12.4GHz. Connectors: RF input, type N(F), all other connectors APC-7. Remote programming: ground closure.