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Radio Record, Volume II, Issue 16, 2 November 1928, Page 32

WIDESPREAD: interest has been created by a system of vocal ,contact maintained by Vancouver with coustaul vessels operating on that coast. From an experiment attempted in 1919 this means of communication has become an effective and reliable means of comniunication between owners’ and their ships or tugs as is usually the case, The sets are constructed. in such 2 munner to make tuning unnecessary. The transmitting station calls up the tug in question by name and, anyone near the speaker or ’phones is able to tuke the message and to reply. Certificated government operators are unnecessary. Both land and sea-tugs have a daylight range of 60 miles and under favourable eonditions 140 miles. It is considered that the system has great -possibilties, and it should be possible to maintain telephone communication with ocean-going liners in the near future.