CO129-498-1 Indepartmental conference on Piracy- report 12-1-1926 - 20-4-1926 — Page 72

FOR OFFICIAL USE.

MERCHANT SHIPPING-WIRELESS TELEGRAPHY.

Automatic Wireless Calling Devices.

Report by the Admiralty

on tests of

Automatic Wireless Calling Devices

carried out on behalf of the

Board of Trade and General Post Office,

1923-1924.

LONDON:

PRINTED & PUBLISHED BY HIS MAJESTY'S STATIONERY OFFICE. To be purchased directly from H.M. STATIONERY OFFICE at the following addresses: Adastral House, Kingsway, London, W.C.2; 28, Abingdon Street, London, S.W.1; York Street, Manchester; 1, St. Andrew's Crescent, Cardiff;

or 120, George Street, Edinburgh;

or through any Bookseller.

1925

Price 3d. net.