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A few countries do not fully comply with these rules. Australia drops the VL prefix for broadcast stations, and Canada uses Chile's CB for its own Canadian Broadcasting Corporation stations.

With regard to the second and/or third letters in the prefixes in the list below, if the country in question is allocated all callsigns with A to Z in that position, then that country can also use call signs with the digits 0 to 9 in that position. For example, the United States is assigned KA–KZ, and therefore can also use prefixes like KA1 or K5.

Many large countries in turn have internal rules on how and where specific subsets of their callsigns can be used (such as Mexico's XE for AM and XH for FM broadcasting), which are not covered here.


FICTIONAL CALL SIGNS


The following ranges of call signs are not used, so can be used as examples and as call signs of Fictional Countries . Note: List not complete.

  • A0–A1

  • C0–C1

  • D0–D1

  • E0–E1

  • H0–H1

  • H5

  • E6–E9

  • Q {Link without Title} (no codes beginning with Q are used—they get confused with Q Codes )

  • O0–O9

  • J0–J1

  • L0–L1

  • P0–P1

  • J9

  • 0 {Link without Title} (no codes beginning with 0 are used)

  • S0–S1

  • T0–T1

  • V0–V1

  • V9

  • Y0–Y1

  • Z0–Z1

  • X0–X9

  • Z4–Z9

  • 1 {Link without Title} (no codes beginning with 1 are used)

  • 30–39

  • 40–49

  • 50–59

  • 60–69

  • 70–79

  • 80–89

  • 90–99



TABLE OF ALLOCATION OF INTERNATIONAL CALL SIGN SERIES

View As Grid Chart

  • Note 1: Series allocated to an international organization.


  • Note 2: Provisional allocation in accordance with No. S19.33:


(S19.33 Between radiocommunication conferences, the Secretary-General is authorized to deal with questions relating to changes in the allocation of series of call signs, on a provisional basis, and subject to confirmation by the following conference.)

  • Note 3: Three letter codes beginning with Q are for communication abbreviations, the Q Code s and not used as callsign prefixes.


  • Note 4: Half-series allocation.


  • Note 5: The Canadian Broadcasting Corporation operates the vast majority of its stations with call signs beginning with CB. This is through a special agreement with the government of Chile , which is officially assigned the CB prefix.