ENGINEERING
GENERAL
71. The technical services of Radio Hong Kong are undertaken by Cable & Wireless Ltd. The Company is responsible for the installation, operation and maintenance of all studios, transmitting and receiving facilities.
72. The Medium Wave Transmitting Station is at Golden Hill in the New Territories. It consists of two pairs of 10 KW transmitters giving outputs of 20 KW for the English Service on 545 kHz and the Chinese Service on 640 kHz respectively. Both services are fed to a diplexer and thence to a common mast radiator. Modulation of the transmitters is normally by off-air pick up of the FM services from Mount Gough, but land lines are available for emergency purposes or when the FM services are carrying a different programme to the AM service. The V.H.F./FM Services of Radio Hong Kong on 91 kHz (English) and 94 kHz (Chinese) are broadcast from the Mount Gough Transmitting Station on Hong Kong Island, using two pairs of 5 KW transmitters combined in a common mast. The total output is 50 KW e.r.p. per service. An emergency generator of 70 KVA with an automatic start/stop mechanism was installed at Mount Gough during the year as were emergency staff quarters. The Receiving Station is part of the Cable & Wireless centre at Mount Butler, also on Hong Kong Island.
BROADCASTING HOUSE
73. During the year the engineering staff of Radio Hong Kong worked hard planning the new facilities for Broadcasting House and ultimately the installation of all studio, control-room equipment etc. In addition to new consoles for some studios and other new items all technical and operational equipment, developed over the years in Mercury House, has been transferred to the new building. Apart from major items, all ancillary equipment required for the large installation programme was designed and made in Radio Hong Kong's workshops. This equipment included a crystal drive clock, with an accuracy of better than one second deviation in two months, and a diffusion system throughout the building offering monitoring facilities of 10 different programme sources. Altogether about seven hundred technical draw- ings were prepared by the installation staff, and the actual work involved the distribution of some 100,000 feet of multi-pair audio cables and 75,000 solder joints.
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