Calrad's HDMI & IR over Coax Extender provides HDMI 1080P signal & IR delivery over a single RG59 or RG6 coaxial cable as the transmission medium. The technology enables HDMI installation to be connected over long distances. Full High-Resolution HDTV signals are supported up to a resolution of 1080P at a maximum distance of 328 ft, see the cable distance table below. The built-in circuitry automatically compensates for different cable lengths and adjusts signal gain and equalization so no adjustments are required by the user. The IR receiver in the transmitter and receiver can work locally and remotely to switch between HDMI input 1 and input 2. Transmitters and receivers can be cascaded to easily expand the HDMI delivery system. Note! MUST USE BNC PERMA SEAL CONNECTORS •NO ADAPTERS•.