RG-174/U RG-174/U is a Flexible Coaxial RF Cable suitable for HF through WLAN Bands. Outside Diameter : 0.110″ (2.8mm) Jacket material : PVC-IIA Shielding : 40dB Sold per meter Attenuation : 75dB/100′ at 2.4 GHz Cable Impedance : 50 Ohms