Local communication high-frequency digital cables for

1 Conducting cores - single-wire from copper soft round wire with nominal diameter 0,4; 0,5; 0,64 and 0,7 mm. 2 Insulation - film-porous-film (three-layer insulation consisting of solid, porous and solid layers of polyethylene). Insulated cores are twisted into pairs.

Nominal number of pairs in the cable: 5, 10, 20, 30, 50? 100. Pairs are twisted in five or ten-pair elementary bundles.

3 Core - twisted from elementary bundles of different colours. 4 Belt insulation - polyethylene terephthalate film, foamed polypropylene tape. 5 Shield - aluminopolyethylene tape with aluminium layer of nominal thickness not less than 0,08 mm and tinned copper wire laid under it.

6 Sheath - polyethylene.