OK/OM DX Contest, SSB

OK/OM DX Contest, SSB

DXSSB10m15m160m20m40m80mhf
Updated on 09 Nov 2026
Next edition
Sat 10 Apr 2027, 12:00 — Sun 11 Apr 2027, 11:59 UTCin 152d 10h
How to submit your log
Submit your log
Exchange: OK/OM: RS + 3-letter county code / non-OK/OM: RS + Serial No.

The OK/OM DX Contest, sponsored by the Czech and Slovak radio clubs, is a popular annual event where we aim to contact as many stations as possible, with a special emphasis on working stations in the Czech Republic (OK) and Slovakia (OM) to maximize our score. We operate on 160m, 80m, 40m, 20m, 15m, and 10m using SSB voice mode. During the contest, we make contacts with other amateur radio operators and exchange basic information, which varies slightly depending on whether we are an OK/OM station or a DX station. The contest runs for 24 hours, typically starting at 1200 UTC on the second Saturday of April and concluding at 1159 UTC the following day. For first-time participants, we recommend focusing on making as many contacts as possible and enjoying the friendly competition. Always remember to check the official rules for exact categories, exchange details, and scoring specifics.

Logging software
Cabrillo contest name: OK-OM-DX
Use this exact name when selecting the contest in N1MM+, Win-Test, or other logging software.

Upcoming editions

  • 2028 Sat 08 Apr 2028, 12:00 — Sun 09 Apr 2028, 11:59 UTC
  • 2029 Sat 14 Apr 2029, 12:00 — Sun 15 Apr 2029, 11:59 UTC
  • 2030 Sat 13 Apr 2030, 12:00 — Sun 14 Apr 2030, 11:59 UTC
  • 2031 Sat 12 Apr 2031, 12:00 — Sun 13 Apr 2031, 11:59 UTC

Past editions

  • 2026 Sat 11 Apr 2026, 12:00 — Sun 12 Apr 2026, 11:59 UTC