Premier Farnell
cable, twinax 1 pair blue 304.8m; reel length (imperial):1000ft; reel length (metric):304.8m; no. of pairs:1; wire size, awg:20awg; outer insulation colour:blue; outer insulation material:pvc; conductor make-up:7 / 28awg; conductor material:tinned copper; external diameter:6.05mm; primary insulation colour:clear, blue; primary insulation material:pe; temp, op. max:80°c; temp, op. min:-40°c; complex cable make-up:1 x 7/28; cores, no. of:2; impedance:78ohm; secondary insulation colour:blue; secondary insulation material:pvc; velocity of propagation:66%
http://grh.premierfarnell.com/grh.aspx?mid=1000105&sku=9463 ... 