These switch modules use RF relays in a stubless tree switch configuration to provide 50 ohm impedance modules. 50 ohm modules are available with SMA or BNC connectors. 

CXR/2×1-GT Modules have terminations on the x2 connectors which terminate any unused channels. This module has an OFF position.
50 ohm Bandpass of DC to 1.6 GHz. Isolation of -60 dB @ 1 GHz.
VSWR = 1.25:1 @ 1 GHz
Switched Power = 10 Watts
Termination rated to 5 Watts