Triple 1x2 SPDT Unterminated Microwave Switch Module, with option: 004 = Install 3xN1810UL 4GHz Unterminated Switches The Agilent (now Keysight) 34947A is a microwave switch for the 34980A multifunction switch/measure unit offers bi-directional switching for test signals from DC to 26.5 GHz. This switch provide excellent insertion loss, isolation, and VSWR specification. The microwave switch is configured as three independent 1x2 (SPDT) unterminated switches on a single module. For general-purpose microwave switching applications, the module can be used to switch separate signal sources for a multi-band receiver/transmitter testing application. Three SPDT unterminated switches 4 GHz, 20 GHz or 26.5 GHz options (unit has 4 GHz option) High isolation loss, low VSWR Up to 50 W switching SMA connectors External switch mounting option