Operating Rules and Procedures

National Call Sign Prefixes

  • Call sign prefixes identify the country (and sometimes the region and licence class) of the operator.  Many hundreds of prefixes are in use.  Exam candidates are expected to know the principal call sign prefixes used in Europe and North America.  These are listed in Annex 1 of the Syllabus and are as follows:
European Countries and entities
OE Austria   TF Iceland   OMSlovakia
ON Belgium   EI Ireland   S5Slovenia
LZ Bulgaria    I Italy   EA Spain
9A Croatia   YL Latvia    SM Sweden
5B Cyprus   LY Lithuania    HB Switzerland
OK Czech Republic   LX Luxembourg    UR Ukraine
OZ Denmark   9H Malta    G, M England
ES Estonia    PA Netherlands    GM, MM Scotland
OH Finland    LA Norway   GW, MW Wales
F France   SP Poland    GI, MI Northern Ireland
DL Germany   CT Portugal   GD, MD Isle of Man
SV Greece    YO Romania   GJ, MJJersey
HA Hungary    UA Russia   GU, MU Guernsey
North America
K, N, W USA    VE Canada
European Countries and entities
OE Austria
ON Belgium
LZ Bulgaria
9ACroatia
5B Cyprus
OK Czech Republic
OZ Denmark
ES Estonia
OH Finland
F France
DL Germany
SV Greece
HA Hungary
TFIceland
EIIreland
I Italy
YL Latvia
LY Lithuania
LX Luxembourg
9H Malta
PA Netherlands
LA Norway
SP Poland
CT Portugal
YO Romania
UA Russia
OMSlovakia
S5Slovenia
EA Spain
SM Sweden
HB Switzerland
UR Ukraine
G, M England
GM, MM Scotland
GW, MW Wales
GI, MI Northern Ireland
GD, MD Isle of Man
GJ, MJJersey
GU,MU Guernsey
North America
K, N, W USA
VE Canada