The Belgian IARU society UBA celebrates its 70th birthday. To celebrate the event, 59 special event stations will be active during the month of May 2018.

These callsigns will be: 
OT70ACC, OT70ALT, OT70ARA, OT70AST, OT70ATH, OT70ATO, OT70BDX, OT70BFA, OT70BSE, OT70BTS, OT70BXE, OT70CRD, OT70CLR, OT70CPN, OT70DIG, OT70DST, OT70EKO, OT70ERA, OT70GBN, OT70GDV, OT70GNT, OT70GTM, OT70HCC, OT70HRT, OT70KTK, OT70LGE, OT70LIR, OT70LLV, OT70LUS, OT70LVN, OT70MCL, OT70MLB, OT70NBT, OT70NLB, OT70NNV, OT70NOL, OT70ODE, OT70ONZ, OT70ORA, OT70OSA, OT70OSB, OT70OST, OT70PHI, OT70RAM, OT70RAT, OT70RCA, OT70RSX, OT70SNW, OT70THN, OT70TLS, OT70TRA, OT70TWS, OT70UBA, OT70WLD, OT70WRA, OT70WRC, OT70WTO, OT70YLC and OT70ZTM.
The suffix of these callsigns represent the local UBA club divisions, i.e. OT70BXE stands for Brussels East.
QSL will be available via OQRS on Clublog.

A commemorative award is available in three classes for working resp. 10, 20 and 30 different OT70 stations

Logsearch and award will be presented at no cost via the webpage 70.uba.be

Fonte: UBA