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Acutec Dual Antenna Switch | MTN RTS | Invacom Dual switch | NSSL Dual switch | Orbit CCU Dual switcher |
An Acutec Dual Antenna Switch monitors signal levels from both antennas. Communications are routed through the optimal antenna. Instantaneous switching, results in uninterrupted connectivity for broadband data and voice

http://www.acutec.com.au/dual-antenna-switch.aspx
Rapid Transfer Switch   Ver1.