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RTICLE 6. Relaying by ship stations.

. Ship stations must, if requested by the sender, serve as interiary for the exchange of radiotelegrams originating in or des1 to other ship stations; the number of intermediary ship ons, however, shall be limited to two (see also Article 2, section these Supplementary Regulations).

- Charges accruing from this transit, whether it is carried on by r one or two intermediary stations, shall be uniformly fixed at entimes per word, pure and simple, without the collection of a mum charge. When two ship stations have participated, this ge shall be equally divided between them.

Radiotelegrams routed as described above must bear, before ddress, the paid service indication=RM= (relay).

TICLE 7. Applications of the International Telegraph Convenand Regulations to radiotelegrams.—

The provisions of the International Telegraph Convention and e Service Regulations annexed thereto shall be applicable to telegrams insofar as the provisions of the International Radioraph Convention and Regulations annexed thereto are not inconat with them.

The provisions of section 3 of Article 81 of the Service Regus annexed to the international Telegraph Convention are not cable to radiotelegraph accounting.

For the application of the Same Service Regulations, land ons shall be considered as transit offices, except when one or the of the Radiotelegraph Regulations expressly stipulates that stations shall be considered as offices of origin or of destination. Article 69 of the Service Regulations annexed to the Internal Telegraph Convention relating to telegrams with multiple esses transmitted by radiotelegraphy applies to telegrams of category transmitted by radiotelephone as well as those transd by radiotelegraph.

Since the word RADIO is always added in the nomenclature name of the coast station mentioned in the address of radioteles, this word must not again be given as a service indication at eginning of the preamble in the transmission of a radiotelegram. conformity with the provisions of Article 13 of the Washington ention, the present Supplementary Regulations will have the force as the Convention and will become effective January 1,

testimony whereof the respective Plenipotentiaries have signed
Supplementary Regulations in one copy which will remain
in the Archives of the Government of the United States of
ica and one of which will be delivered to each party.
e at Washington, November 25, 1927.
gned) For the Union of South Africa: H. J. Lenton, W. F. C.

Morton; for French Equatorial Africa and other
Colonies: Cassagnac; for French West Africa: Cas-
sagnac; for Portuguese West Africa: Arnaldo de
Paiva Carvalho; for Portuguese East Africa and the
Portuguese Asiatic Possessions: Mario Correa Barata
da Cruz; for Germany: Otto Arendt, Hermann Geiss,
H. Harbich, Arthur Werner, Gunther Suadicani, E.
L. Baer; for the Argentine Republic: Felipe Espil,

Luis F. Orlandini, Francisco Lajous; for the Commonwealth of Australia: H. P. Brown; for Austria: Dr. Maximilian Hartwich, Eng. Hans Pfeuffer; for Belgium: J. Pierart, Goldschmidt, G. Vincent; for Bolivia: Geo. de la Barra; for Brazil: P. Coelho de Almeida, Frederico Villar, Manuel F. Simões Ayres: for Bulgaria: St. Bisseroff; for Chili: I. Holger: for China: Chin-Chun Wang, Chang Hsüan, Hing Ging Y. Lee, Ti-Ching Wu; for the Republic of Colombia: Enrique Olaya H.; for the Spanish Colony of the Gulf of Guinea: Adolfo H. de Solas; for the Belgian Congo: J. Pierart, G. Vincent, Goldschmidt; for Costa Rica: Rafael Oreamuno; for Cuba: L. Albur querque, Gonzalo Güell, Luis Marino Pérez; for Curacao: G. Schotel; for Cyrenaica: Paolo Zonta; for Denmark: T. F. Krarup, C. Wamberg; for the Dominican Republic: M. Vasquez G.; for Egypt: Horace Mayne, Aly Ibrahim; for Eritrea: Cesare Bardeloni; for Spain: Mariano Amoedo, Antonio Nieto, Adolfo H. de Solas, Jose Sastre; for Estonia: G. Jallajas; for Finland: L. Åström; for France: L Boulanger; for Great Britain: T. F. Purves. J. Joyce Broderick, F. W. Phillips, F. W. Home, L. F. Blandy (Air Commodore), C. H. Boyd, A. Leslie Harris: for Greece: Th. Pentheroudakis; for Guatemala: J. Montano N.; for the Republic of Haiti: Raoul Lizaire: for Hungary: Bernard de Paskay; for British India: P. J. Edmunds, P. N. Mitra: for the Dutch East Indies: G. C. Holtzappel, Warnsinck, G. Schotel, van Doren: for French Indo-China: G. Jullien; for the Irish Free State: P. S. MacCathmhaoil, T. S. O'Muineachain; for Italy: Guiseppe Gneme, Giacomo Barbera, Gino Montefinale; for Japan (Chosen, Taiwan. Japanese Sakhalin, the Leased Territory of Kwantung and the South Sea Islands under Japanese Mandate): S. Sawada, N. Morita, K. Nishizaki, I. Yamamoto, Sanosuke Inada, T. Ushizawa, T. Nakagami; for the Republic of Liberia: Ernest Lyon (Subj. to the Rati fication of Liberian Senate); for Madagascar: G Jullien; for Morocco (with the exception of the Spanish Zone): Frederic Knobel: for Mexico: Pedro N. Cota, Juan B. Saldaña; for Nicaragua: Manuel Zavala; for Norway: N. Nickelsen, Harmod Petersen. P. Tennfjord, J. J. Larsen; for New Zealand: A Gibbs; for the Republic of Panama: R. J. Alfaro: for Paraguay: Juan Vicente Rámírez; for the Netherlands: G. J. Hofker, J. A. Bland van den Berg, W. Kruijt, E. F. W. Völter, Warnsinck; for Peru: A. Gonzáles Prada; for Persia: D. Meftah (en referendum); for Poland: Eugène Stallinger; for Portugal: José de Liz Ferreira Junior; for Rumania: G. Cretziano (ad referendum); for the Republic of El Sal

vador: Francisco A Lima; for the Kingdom of the
Serbs, Croats and Slovenes: V. Antoniévitch; for
Siam Nides Virajakich; for Italian Somaliland:
Valerio della Campana; for Sweden: Hamilton; Lit-
strom, Lemoine; for Switzerland: E. Nussbaum; for
Surinam; G. Schotel; for the Syro-Libanese Terri-
tories: Frederic Knobel; for the Republic of San
Marino: Frn. Ferrari; for Czechoslovakia: Dr. Otto
Kučera, Eng. Strnad; for Tripolitania: Settimio
Aurini; for Tunis: Frederic Knobel; for Turkey: J.
A. Bland van den Berg; for Uruguay: Varela; for
Venezuela: Luis Churion.


[See Art. 1 of the Supplementary Regulations]

1. (1) Call Signals. For land stations, the geographical name of location must be used.

2) For aircraft stations and other mobile stations the radioteleoh call signals must, in principle, be employed; in the case of ship ions, a group of four letters, and for aircraft stations, a group of letters, in accordance with the provisions of the International vention for Aerial Navigation. The call signal must, for mobile ons carried by commercial vessels or aircraft, be preceded by the e of the proprietory company, for example: "Handley-Page," or he word, "Private" for mobile stations belonging to individuals. 1. Spelling of call signals, service abbreviations and words.-For spelling the following well-known names must be employed:

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- The following procedure is given as an example;

A calls: "Allo B, allo B, A appelle, A appelle, Message pour - Message pour vous, over."

B replies: "Allo A, allo A, B répond, B répond, envoyez votre age, envoyez votre message, over.'

A replies: "Allo B, A répond, message commence, à------ (adsee) de

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"message terminé, je répète, message commence, à


"message terminé, over"

B replies: "Allo A, B répond, votre message commence, à


"votre message terminé, over”

5. A replies: "Allo B, A répond, exact, exact, coupant"

6. A then breaks off the communication and both stations resume their normal watch.

NOTE. At the beginning of a communication, the calling formula is spoken twice by both the station called and the calling station. Once communication has been established, it is spoken once only.


[Abbreviations used: C.-Convention; R.=Regulation; SR. Supplementary Regulations; App. Appendix to Regulations; SR. App. Appendix to Supplementary Regulations] Article or appendix number R. App. 1 (п).


Aircraft Radio Service....
Code Q and miscellaneous_
Mobile Service Procedure-
Ocean Letter___.


Service Documents-.

Accession of Colonies_

Accession of States---

R. App. 1.
R. 9.

SR. 5.

SR. App. 1.

SR. 6.

R. 13.

C. 19 (1).

C. 19 (1).
R. 32.

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Convention and Regulations to remain in those of U. S. Gov-

Arrangements, Special, between countries on points of service..
Authority of Master__

Automatic Alarm-...

"B" type Waves.

(See under "Type.")

Band, width of frequency.

Bearings. (See Radio Compass.)

R. 3.

R. 22.

C. 19.

R. 9, R. 11.

R. 1.

R. 1.

R. 7.

R. App. 1 (ш).

R. App. 3.

R. 9.

R. 1.

R. 13.

R. 20.

SR. 2.

R. 19.

R. 5.

R. 6.

R. 1.

R. 4, R. 16.

R. 16.

C. 10, R. 3.

R. 18.

C. 20.

C. 24.

C. 14.

R. 8.

R. 19.

R. 4.


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e, Morse: Familiarity with, operators in private experi-

R. 1.

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itions of stations, services and special words and phrases.

nciation of Convention_

ery of radiotelegrams.

licts, Notices free-----

ces, Special------

C. 5.
C. 1, R. 1.

R. 29.

C. 23, C. 19.

SR. 2.

C. 9.

C. 3.

For preventing intercommunication____

tion-finding stations and service. R. 13 (5), R. 31 (1), (6), (7), (8), R. App. 8.

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