File: Mark IA

Scope and Content

Papers relating to the Mark IA project in 1971-1972. Predominantly correspondence between the Observatory and Husbands, and the SRC concerning design and operational issues, including the performance of the elevation locks, the hoists for the focus box, the installation of a parametric amplifier, testing of the movement of the dish, and intermittent problems with electrical surging. There are two separate folders for correspondence with suppliers: 4) for access hoists with Access Equipment Ltd. over hoists and 5) for microwave equipment with Ferranti Ltd.