75 Ohm: These are the standard coax cables that are found within homes and commercial properties. 75 Ohm cables are primarily used for AV signals and can transmit signals up to 50 ft with any installation. This cable can be commonly used for High Def TV signals, Satellite and Cable boxes and police scanners. 75 ohm also offers low attenuation and capacitance acceptance for these digital audio, A/V and data signals.