The OI6S radio station
OI6S is the callsign of the amateur radio (”ham”) station of the Guild Sissiradistikilta. The operating location and activity of the station vary.
The prefix ”OI” is reserved for Finnish military amateur radio, i.e. ham radio operation happening within or in ties to Finnish Defence Forces or its tradition. There is a nice award available for those who have worked a sufficient number of stations with the OI prefix.
It might be worth mentioning that military amateur radio operation is normal amateur radio activity and amateur radio is not specifically used to pursue any military goals. That said, we operate according to globally accepted rules and recommendations and promote good operating practices and ham spirit.