The Geneva Frequency Plan of 1975 (Aka "The Final Acts of the Regional Administrative LF/MF Broadcasting Conference (Regions 1 and 3) Geneva, 1975" or simply "GE75") is the internationally agreed

frequency plan A frequency plan, bandplan, band plan or wavelength plan is a plan for using a particular band of radio frequencies, that are a portion of the electromagnetic spectrum. Each frequency plan defines the frequency range to be included, how channels a ...

which was drawn up to implement the provisions of the Final Acts of the Regional Administrative LF/MF Broadcasting Conference (Regions 1 and 3) held in

Geneva Geneva ( ; french: Genève ) frp, Genèva ; german: link=no, Genf ; it, Ginevra ; rm, Genevra is the List of cities in Switzerland, second-most populous city in Switzerland (after Zürich) and the most populous city of Romandy, the French-speaki ...

Switzerland ). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel ...

, in 1975. It covers radio broadcasting in the

long Long may refer to: Measurement * Long, characteristic of something of great duration * Long, characteristic of something of great length * Longitude (abbreviation: long.), a geographic coordinate * Longa (music), note value in early music mensur ...

and

medium wave Medium wave (MW) is the part of the medium frequency (MF) radio band used mainly for AM radio broadcasting. The spectrum provides about 120 channels with more limited sound quality than FM stations on the FM broadcast band. During the daytime ...

bands outside the Americas ( separate agreements being in place for North and South America). The plan was drawn up under the auspices of the

World Administrative Radio Conference The World Administrative Radio Conference (WARC) was a technical conference of the International Telecommunication Union (ITU) where delegates from member nations of the ITU met to revise or amend the entire international radio regulations pertainin ...

(WARC) of the

International Telecommunication Union The International Telecommunication Union is a specialized agency of the United Nations responsible for many matters related to information and communication technologies. It was established on 17 May 1865 as the International Telegraph Unio ...

(ITU) with the assistance of the

European Broadcasting Union The European Broadcasting Union (EBU; french: Union européenne de radio-télévision, links=no, UER) is an alliance of Public broadcasting, public service media organisations whose countries are within the European Broadcasting Area or who ar ...

(EBU/UER). The Geneva plan replaced the 1948 Copenhagen plan. It became necessary because of the large number of broadcasting stations in these frequency ranges leading to ever more mutual interference (Many countries had refused to ratify the Copenhagen plan and compliance was patchy even among those which had). The Geneva plan entered into force on 23 November 1978 and although its intended lifespan was only until 1989, it is still valid (with small modification by mutual coordination between countries) today, and compliance has been far more widespread. Most existing European radio stations were required to change their broadcasting frequencies following implementation of the plan. In most cases the changes were slight (less than five kilohertz) but were more drastic in some cases, particularly in the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and North ...

, where all BBC national stations moved to a new wavelength or band. However the increased number of radio services and reduction (in most cases) of interference to radio signals (particularly at nighttime) was considered by most broadcasters to be worth the initial inconvenience. As a result of the plan most medium wave (and later longwave) stations outside North and South America operate on exact multiples of 9 kHz; the sum of all digits of the frequency will be 9 or a multiple of 9 (see 9#Mathematics).

Predecessors to the GE75 Plan

* Geneva 1925 (effective 14 November 1926) 10 kHz spacings on MW; * Brussels 1928 (effective 13 January 1929) 9 kHz spacings on MW (10 kHz above 1000 kHz); * Prague 1929 (effective 30 June 1929) "European Radio-electric Conference of Prague 1929" 9 kHz spacings on MW (10 kHz above 1400 kHz); * Madrid/Lucerne 1932 (effective 15 January 1934 , pages12-13) "Lucerne Convention European

Wavelength Plan A frequency plan, bandplan, band plan or wavelength plan is a plan for using a particular band of radio frequencies, that are a portion of the electromagnetic spectrum. Each frequency plan defines the frequency range to be included, how channels a ...

" Mostly 9 kHz spacings but not harmonic multiples; * Montreux 1939 (was to be effective 1940 but never implemented due to World War II );; * Copenhagen 1948 (effective 15 March 1950) "European LW/MW Conference Copenhagen 1948 (European broadcasting convention)" Mostly 9 kHz (8 kHz above 1529 kHz 7, 8, and 9 kHz on LW) spacings but not harmonic multiples—offset 1 kHz on MW and (generally) 2 kHz on LW.

References

External links

GE75 Final Acts (including original plan)
(PDF format) * * * {{Telecommunications Bandplans Telecommunications treaties 1975 in radio Treaties concluded in 1975 Treaties of the People's Socialist Republic of Albania Treaties of Andorra Treaties of Bahrain Treaties of the Byelorussian Soviet Socialist Republic Treaties of Belgium Treaties of Bosnia and Herzegovina Treaties of Botswana Treaties of the People's Republic of Bulgaria Treaties of Burkina Faso Treaties of Cameroon Treaties of the People's Republic of China Treaties of Ivory Coast Treaties of Croatia Treaties of the Czech Republic Treaties of Denmark Treaties of Egypt Treaties of the Derg Treaties of Fiji Treaties of Finland Treaties of France Treaties of West Germany Treaties of Greece Treaties of the Hungarian People's Republic Treaties of Iceland Treaties of India Treaties of Ireland Treaties of Italy Treaties of Japan Treaties of Jordan Treaties of South Korea Treaties of Liechtenstein Treaties of Luxembourg Treaties of Malaysia Treaties of Malawi Treaties of Monaco Treaties of the Mongolian People's Republic Treaties of Montenegro Treaties of Morocco Treaties of the People's Republic of Mozambique Treaties of Myanmar Treaties of Nauru Treaties of Nepal Treaties of the Netherlands Treaties of New Zealand Treaties of Norway Treaties of Oman Treaties of Papua New Guinea Treaties of the Polish People's Republic Treaties of the Socialist Republic of Romania Treaties of the Soviet Union Treaties of Senegal Treaties of Serbia and Montenegro Treaties of Sierra Leone Treaties of Singapore Treaties of Slovakia Treaties of Slovenia Treaties of Spain Treaties of Sweden Treaties of Switzerland Treaties of North Macedonia Treaties of Tonga Treaties of the United Kingdom Treaties of the Holy See Treaties of Czechoslovakia Treaties of East Germany Treaties of Yugoslavia

Predecessors to the GE75 Plan

See also

References

External links