Coaxial cable, twelve pairs, 1950-1969
- Made:
- 1950-1969 in unknown
- maker:
- Unknown
Cable containing twelve coaxial pairs each capable of carrying one television channel, of 960 unidirectional telephone channels (two pairs used to provide for 960 two-way conversations), sheathed with lead alloy to General Post Office specification, unknown maker, 1950-1969