The Sennheiser GZL RG 58 Coaxial RF Antenna Cable is a 16.4 foot male-male coax cable designed for use with antennas and RF distribution systems. It has a maximum signal loss of 34.8dB per 100m at 400 MHz (56.4dB at 800 MHz), allowing you to connect several cables (like with a ground block or similar) before any significant loss. This cable is recommended for wireless audio-related applications.