Ordering codes: EXT1: PH.CB.GSM.1M EXT5: PH.CB.GSM.5M Antenna’s Ext Cable Antenna’s extensions Antenna’s extension used to improve reception by moving the antenna. Available in the following lengths: – EXT1: 1m (3.3ft) Coaxial cable RG174 – EXT5: 5m (16.4ft) Coaxial cable RG174