2122
THE NEW ZEALAND GAZETTE.
[No. 53

these times will fall within a period when ships with one operator are keeping watch. Times at which messages will be broadcast from 500 kc/s (600 metres) Stations are not included in the Schedule, since merchant ships keep normal watch on this wave and messages may, therefore, be broadcast from these Stations at any time when the ships with one operator are keeping watch and are not listening for any routine transmissions on another wave.

5. Messages containing information affecting British Merchant Ships will be broadcast—
   (a) By Admiralty to all British Merchant Ships in all areas ;
   (b) By Admiralty to British Merchant Ships in any particular area or areas ;
   (c) By Naval Authorities abroad to British Merchant Ships in the areas for which they are responsible.

6. Messages under (a) will be broadcast from Rugby and Falklands with the call sign GBMS, and will also be communicated by the Admiralty to the Naval Authorities responsible for the other areas shown in the Schedule, who will arrange for them to be broadcast with the same call sign by the W/T Stations for those areas which are shown in column 3 of the Schedule. (Messages under (a), during “ test ” periods, will be broadcast from Rugby and Falklands only.)

Messages under (b) will be broadcast from Rugby and, if necessary, from Falklands with the call sign or call signs for Merchant Ships in the particular area or areas concerned. Unless the messages affect only Area 1, they will also be communicated by the Admiralty to the Naval Authorities responsible for the area or areas affected, who will arrange for them to be broadcast by the W/T Stations concerned, using the appropriate call sign.

Messages under (c) will be broadcast by the W/T Stations shown in column 3 of the Schedule, using the call sign for Merchant Ships in that area (vide paragraph 2 above). Such messages may also be broadcast from Rugby and/or Falklands with the same call sign.

7. The W/T Stations broadcasting messages will use their own call signs, and will indicate the Naval Authority originating the message at the beginning of the text. For example, a message broadcast by Aden W/T Station from Commander-in-Chief, East Indies, for Merchant Ships in Area 3 :—CT GBMS 3 GBMS 3 GBMS 3 DE GZQ GZQ GZQ BT From Commander-in-Chief, East Indies, BT During the period 1st March to 30th April, 1926, H.M. ships engaged in the prevention of smuggling arms will be operating without lights in the Persian Gulf BT 1030 () BT Repetition BT From Commander-in-Chief, &c., &c., BT 1030 () AR VA.

NOTE.—(*) This is G.M.T. at which the message was ordered to be sent. It may be followed by the date thus :—“ 1030 NR 15 NR 2.”

8. The procedure outlined in this organization is not intended to interfere with or replace existing arrangements for broadcasting to Merchant Ships messages concerning navigational dangers, weather reports, or gale warnings. Where routine arrangements exist for broadcasting such messages, those arrangements will continue in force.

9. The organization for broadcasting messages of interest to Merchant Ships under the arrangements promulgated herein is not in operation continuously in peace time, but, as stated in the opening remarks, it is introduced for trial purposes for one week on 1st January and 1st July each year, to test its efficiency.

During these test periods brief messages will be issued by the Admiralty to all British Merchant Ships, and by the Naval Authorities responsible for the respective areas shown in the Schedule to British Merchant Ships in those areas. These “ test ” messages will not, however, be broadcast by the 500 kc/s (600 metres) Stations shown in the Schedule as it is considered unnecessary to include these stations in the tests ; nor will Rugby broadcast on Sundays during the test periods.

10. Should it be desired to send a message or messages of special importance to British Merchant Ships, at any time outside the periods fixed for trial purposes in peace time, the organization will be brought into operation, temporarily, for this purpose.

11. If and when such occasion arises to bring the organization into force, either generally or in any particular area, messages notifying its introduction will be issued by the Admiralty and/or by the Naval Authority responsible for the area or areas concerned. When such messages are necessary every available means of reaching Merchant Ships will be employed—i.e., the messages will be broadcast not only by Rugby and the other Stations at the times shown in the Schedule, but also where Stations included in the organization transmit navigational warnings, weather reports, &c., at routine periods, messages notifying its introduction will be broadcast during those periods. Such messages will bear the address “ All British Merchant Ships ” or “ British Merchant Ships in . . . . . . . . . . . area,” in full ; the use of the call signs mentioned in paragraph 2 above will commence when the organization is brought into force.