
At the occasion of the IARU centenary, the Belgian IARU society UBA will be activating 30 special event stations between March 15th till May 15th 2025.
The callsigns of these stations are: ON100I, ON100A, ON100R, ON100U, OO100I, OO100A, OO100R, OO100U, OP100I, OP100A, OP100R, OP100U, OQ100I, OQ100A, OQ100R, OQ100U, OR100I, OR100A, OR100R, OR100U, OS100I, OS100A, OS100R, OS100U, OT100I, OT100A, OT100R and OT100U. These stations will be aired from several local divisions of the UBA. Furthermore, OQ0IARU and OR0IARU will be activated by the members of the UBA board and HF Committee.
QSL cards
Six different QSL cards will be available: one for each suffix letter (I, A, R and U) of the 28 stations in the ON100I to OT100U series and two for OQ0IARU and OR0IARU.
We do NOT need your QSL, so please refrain from sending your own QSL to reduce the workload on the the QSL bureau. If you made one or more QSOs with any of the special event stations and wish to receive a QSL via the bureau, please follow the instructions published here.
The combined front of these six paper QSL cards will form one IARU motive and may therefore be considered a collector’s item. Electronic QSLs will be available via hamlog.online
No other confirmation methods will be in place (i.e. no LoTW, eQSL,QRZ, ...), nor do we accept QSLing via e-mail (QSL World, QSL Creator and similar sites).
Award Program
To celebrate the event, a series of awards will also be available for free. Logsearch and download of the certificates will be provided in cooperation with hamlog.online
Note about your QSOs
A crew of about three hundred operators activates the thirty different special event stations. The speed of finding your QSO through the hamlog.online log search depends on how often and how quickly an individual operator delivers his or her log to the UBA HF committee.
Obviously, operators are asked to process their logs on a very regular basis, but ultimately this is the responsibility of each individual operator of each of the thirty special event stations. It is therefore completely useless to contact the members of the UBA HF committee with questions about this. Such mails will therefore remain unanswered.
If you discover that your call was incorrectly logged, please note that correct logging of QSO data is the responsibility of both QSO partners. Make sure during your QSO that the operator of the special event station logs your call correctly. We will not make subsequent changes to logs.

UBA IARU 100 Event Awards
UBA IARU 100 – POINTS AWARD
The UBA IARU 100 Points Award is available for working the special event stations ON100I, ON100A, ON100R, ON100U, OO100I, OO100A, OO100R, OO100U, OP100I, OP100A, OP100R, OP100U, OQ100I, OQ100A, OQ100R, OQ100U, OR100I, OR100A, OR100R, OR100U, OS100I, OS100A, OS100R, OS100U, OT100I, OT100A, OT100R, OT100U, OQ0IARU and OR0IARU in different band/mode slots.
All HF/VHF/UHF bands may be used, including contacts via the QO-100 satellite. However, contacts via terrestrial repeaters or QSOs relayed via the internet (D-STAR reflectors, DMR talkgroups, Echolink, etc.) do not count towards the awards.
Points table
QSO in ... mode | CW & Phone | DIGI |
Points | 2 | 1 |
Note that all digital modes (RTTY, PSK31, FT8, PSK63, FT4, etc.) are considered as one single digimode, i.e. no additional points can be obtained by working a station on different digital modes on a single band.
Example: OO100A 10m CW + OP100U 15m SSB + OO100A 10m RTTY + OS100R 80m CW + OS100I 80m CW + OS100I 80m SSB + OR0IARU 15m FT8 + OR0IARU 15m PSK63 + OQ0IARU 2m FM + OQ100R 40m SSB + ON100A 160m SSB + OT100U QO-100 FT4 = 19 points
The UBA IARU 100 Points Award is available in six different classes, each for achieving a different amount of points.
Class | Bronze | Silver | Gold | Diamond | Platin | Extreme |
Points required | 50 | 100 | 150 | 200 | 250 | 300 |
UBA IARU 100 – STATIONS AWARD
The UBA IARU 100 Points Award is available for working the special event stations ON100I, ON100A, ON100R, ON100U, OO100I, OO100A, OO100R, OO100U, OP100I, OP100A, OP100R, OP100U, OQ100I, OQ100A, OQ100R, OQ100U, OR100I, OR100A, OR100R, OR100U, OS100I, OS100A, OS100R, OS100U, OT100I, OT100A, OT100R, OT100U, OQ0IARU and OR0IARU.
Every callsign counts once, regardless of bands or modes. All HF/VHF/UHF bands may be used, including contacts via the QO-100 satellite. However, contacts via terrestrial repeaters or QSOs relayed via the internet (D-STAR reflectors, DMR talkgroups, Echolink, etc.) do not count towards the awards.
The UBA IARU 100 Points Award is available in six different classes, each for working a certain number of different special event stations.
Class | Bronze | Silver | Gold | Diamond | Platin | Master |
different stations needed | 5 | 10 | 15 | 20 | 25 | all 30 |
UBA IARU 100 – TRIPLE PLAY AWARD
The UBA IARU Triple Play Award is available for working both OQ0IARU and OR0IARU. Both stations have to be worked on three different bands and in three different modes (CW, Phone & DIGI).
Examples:
- OQ0IARU worked on 60m FT8, 40m CW, 17m SSB + OR0IARU on 80m RTTY, 15m CW, 12m SSB (each station on 3 bands and 3 modes)
- OQ0IARU worked on 2m FM, QO-100 SSB, 160m CW + OR0IARU on 20m CW, 20m SSB, 6m FT8, 10m CW (each station on 3 bands and 3 modes)
- OQ0IARU worked on 70cm SSB, 80m SSB, 40m SSB, 80m CW, 40m FT8 + OR0IARU on 160m FT8, 160m CW, 40m SSB, 60m FT8 (each station on 3 bands and 3 modes)
All HF/VHF/UHF bands may be used, including contacts via the QO-100 satellite. However, contacts via terrestrial repeaters or QSOs relayed via the internet (D-STAR reflectors, DMR talkgroups, Echolink, etc.) do not count towards the awards. Note that all digital modes (RTTY, PSK31, FT8, PSK63, FT4, etc.) are considered as one single digimode.
AWARDS LOGSEARCH & FREE DOWNLOAD
Logsearch and award management is provided by HAMLOG.ONLINE
Please click on the HAMLOG.ONLINE link to check your scores and download our award(s), if applicable.