Profile: Antex Electronics Corp. is a designer and manufacturer of courtroom recording products. Our accessories include adapters, amplifiers and extension cable kits. Our antenna extension cable is designed to work with any satellite radio antennas.Our DMX8 is a digital recording device features supports audio input and output to telephone and video teleconference systems, combines 8-input to 4-channel mixer with 4-channel audio encoder card functions in a single device & includes host software interface which provides complete control of internal configurations. Our XM and Sirius satellite radio products are the ideal solution for both commercial and residential applications. Our antenna extension cable is designed to work with any satellite radio antennas.