| BADARS |
Braintree and District Amateur Radio Society |
| BAE |
Base Antártica Española |
| BAFARA |
Belgian Air Force Amateur Radio Association 
|
| BARAC |
Bishop Auckland Radio Amateur Club |
| BARC |
Belize Amateur Radio Club |
| BARG |
Bahrain Amateur Radio Group |
| BARS |
Bahrain Amateur Radio Society |
| BARTG |
British Amateur Radio Teledata Group
|
| BAS |
British Antarctic Survey |
| BATC |
British Amateur Television Club |
| BBT |
Bayerischer Bergtag |
| BCA |
Belgian Castles Award |
| BCC |
Bavarian Contest Club |
| BDARA |
Brunei Darussalam Amateur Radio Association |
| BDM |
Belgium Digital Mode Club |
| BFRA |
Bulgarian Federation of Radio-Amateurs
|
| BFSAI |
British Forces South Atlantic Islands |
| BIPT |
Belgian Institute for Postal Services and Telecommunications |
BIWOTA
|
British Inland Waterways on the air |
BLOTA
|
Boat Lifts on the Air |
| BNetzA |
Bundesnetzagentur
|
| BOTA |
Beaches On The Air |
| BPSK |
Binary Phase Shift Keying |
| BRARC |
Belgian Railways Amateur Radio Club
|
| BRARS |
British Railways Amateur Radio Society
|
| BRASZ |
Budapest Radioamateur Society |
| BSCC |
Blacksea Contest Club |
| BYLARA |
British Young Ladies Amateur Radio Association |
|
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