Coaxial A/B Switch 75 Ohm High Performance Isolation 80 dB Commercial Grade AB Switch A/V Video Selector Heavy Duty Satellite Dish Off-Air HD TV Antenna Digital Signal Connection Heavy duty A/B coaxial switch This A-B switch has many uses You can switch between your VCR and satellite dish between two antennas, or any two devices using F-56 or F-59 connectors Simplify your viewing with an A-B switch! AB-SWITCH Features