Radio_Hong_Kong_1961-1962 — Page 34

Channel B. The programmes appear to have been well received by listeners, who showed considerable interest in this new approach to sound broadcasting.

109. A temporary studio and control room were planned and built at the Hong Kong Products Exhibition organized by the Chinese Manufacturers' Association on the site of the old Royal Naval Dockyard. The studio was fully equipped and broadcasts were carried out daily in both English and Chinese services.

Transmitters

Hung Hom A.M. Transmitters

110. There was no change in the deployment of these transmitters during 1961-62. Hung Hom is equipped with two S.T.C. C.M.2 transmitters with an output of 2 Kw/s. As a joint standby to these medium wave transmitters there is a Marconi T.B.M. 631c, as well as a Marconi SWB 8A with power of 24 kilowatts, which carries the Chinese short wave service. V.H.F./F.M. Tuners have now been installed at Hung Hom for use in case of failure of the programme lines from Mercury House. In this event the Chinese and English Service transmitters can be modulated by receiving the F.M. broadcasts from Mount Gough transmitting station.

111. The following are details of transmitter running hours and interruptions during the period.

Transmitter Callsign/Frequency

Service Interruptions

Running Time

Hours

Due to Transmitter Failure

ZBW

860 Kc/s

6171

1 min. 35 secs.

Due to other causes 13 mins. 5 secs.

ZEK 640 Kc/s

6174

1 min. 30 secs.

16 mins. 4 secs.

ZBW 3 3,940 Kc/s

6234

1 min. 25 secs.

15 mins. 40 secs.

(12 minutes interruption on the 21st June, 1961 was due to a power station failure)

Mount Gough F.M. Transmitters

112. Radio Hong Kong's V.H.F./F.M. services to the Colony are transmitted by four Marconi BD 321A F.M. transmitters of 5 kilowatts each, working in pairs. The performance of these unattended installa- tions has proved very satisfactory, and interruptions due to transmitter faults totalled only fourteen minutes for the English service, and twenty minutes for the Chinese service.

113. Faults due to the failure of programme lines resulted in inter- ruptions to the Chinese service for 4 hours 59 minutes, and to the

22