Concretic cable to uses 2,4 / 5GHz. The thanks of small attenuation he has been useful to longer antenna installations.
Technical specifications:
Internal strand - wire on diameter: 2.74mm
Dielectric - the fine seed PE
External strand - Cu -PET--Cu foil + braid Cu (80%)
Attenuation on 100m - 2.4ghz 21,5 dB; 5.6ghz 34dB

Price for one meter.