SECRECY ENSURED.

Taranaki Central Press, Volume IV, Issue 407, 14 April 1937, Page 6

SECRECY ENSURED.

I ‘ 0 j RADIO CONVERSATION. New Apparatus Installed. i Press Association —Copyright. Dunedin, April 14. ' “With the installation of ‘scramblk * ing’ apparatus on the t r&ns-T;b man » liner Awatea.” states the Post.mast.erL General, Hon. F. Jones, “the Post k Office is now able to guarantee seci. recy for all overseas radio ton versa- . tions. i »‘Thie ingenious electrical apparaL tus.‘ which gives privacy for toll conversations over the air, has been in use for some months on the New Zealand-Australia and New ZealandUnited Kingdom channels. It involves the provision of extensive ( equipment at Wellington, Da Perouse ( New South Wales) and London when i conversation is in progress between New Zealand and any overseas point, including the Awatea. } “Clear speech received along the subscribers’ line is converted at the Wellington telephone exchange by the ‘scrambling’ apparatus’ into what } sounds like a meaningless jumble of very high pitch, quite .unlike normal ’ speech. r “A short-wave listener Who hapT pened to tune in on the right wave- 1 , length might be misled into thinking ! that a conversation was proceeding in I ! some very strange foreign language, but as a matter of fact no linguist Without >the aid of the intricate ap- . paratus could grasp the meaning of i any .of the sounds. Even the techni* ’ cal operators in charge of the radio ( channels cannot understand what is t being transmitted, and the English t radio-receiving station at Baldock transmits the same/afcparem jumble :Ao the international- exchange in bonwhere it is converted back into gformal clear speech and put over, in 2She subscribers’ lines. SSL “As the inland and telephone ciruits [except. party lines) are, private 2Faad consist of independent channels to the exchanges, r.here is complete along the whole route/’ ■■ ■ ■ ——-.