oca-co

university of california - the Publication Archive

Fibre-optic cable. 32. Infrared beam. 36. Microwave link. 37. UHF RF transmission. 40. CCTV via the telephone network. 40. Connectors. 41. Cable test equipment. 43 .... Tubes were large, required high voltages to operate, were generally ..... introduced the Rotakin method of testing the resolution and size of displayed.