Read the official requirements, categories, exchange information, and guidelines for the YO DX HF Contest.
The Romanian Amateur Radio Federation (FRR).
The fourth full weekend in August:
| Category Code | Description |
|---|---|
| SOAB-MIX-HP | Single Operator, All Bands, Mixed (CW & SSB), High Power. |
| SOAB-MIX-LP | Single Operator, All Bands, Mixed (CW & SSB), Low Power (maximum 100 watts)[cite: 1]. |
| SOAB-CW | Single Operator, All Bands, CW only[cite: 1]. |
| SOAB-SSB | Single Operator, All Bands, SSB only[cite: 1]. |
| SOSB | Single Operator, Single Band, Mixed (5 categories separate: 80m, 40m, 20m, 15m, and 10m) irrespective of power level[cite: 1]. |
| MOST | Multi Operators, Single Transmitter, All Bands, Mixed[cite: 1]. |
| YN | Youngster and Novice (under 18 years old or maximum 3 years since first license)[cite: 1]. |
| SWL | Short Wave Listeners, Mixed[cite: 1]. |
4.1 All HF bands from 3.5 to 28 MHz are permitted (except WARC bands)[cite: 1].
4.2 Single Band operators can legally contribute to two different HF bands (sending separate logs that count for the final rankings and prizes)[cite: 1].
4.3 Single Band operators performing on other bands are requested to keep those QSOs in their log for correction purposes[cite: 1].
4.4 Final rankings will be issued: for Romania, the rest of the world, by continents, and by countries[cite: 1].
RS(T) + Serial Number (starting from 001)[cite: 1].
RS(T) + County Abbreviation (e.g. BU for Bucharest)[cite: 1].
5.3 MOST Stations: Can use different serial numbers for each band or a single chronological serial number[cite: 1].
6.3 /MM Stations: Do not count as multipliers, but are valued at 4 points for each participant[cite: 1].
6.4 SWL Stations: Must log-in both callsigns and at least one exchange; scoring is identical to the rules above[cite: 1].
Double QSOs are contacts made with the same station on the same mode and band. Only the first valid contact counts for points. If the first is invalid, the second is accepted[cite: 1]. No penalties apply and keeping them in the log is recommended[cite: 1].
One multiplier for each county worked per band, plus one multiplier for each different DXCC country worked per band (irrespective of operating mode)[cite: 1].
One multiplier counts for each different DXCC country worked per band (irrespective of operating mode)[cite: 1].
10.1 All prefixes assigned to Romania are allowed (YO, YQ, YP, YR) under ANCOM authorization[cite: 1].
10.2 Transmitters and receivers must be located within a 500m radius. Antennas must be physically connected to the equipment[cite: 1].
10.3 Web Clusters and Packet Radio networks are allowed for all participants[cite: 1].
10.4 & 10.5 Operating transmitters from other physical locations via internet or self-spotting on clusters is strictly forbidden and leads to disqualification[cite: 1].
10.8 Single Operators can change bands/modes without restriction, but only one single signal can be "on the air" at any given time[cite: 1].
10.10 MOST Stations must obey the "10 minutes rule". Only one transmitter signal is permitted at once, unless the second signal works a new multiplier on a different band[cite: 1].
10.11 Mixed categories can contact the same station on both CW and SSB. Contacts on CW within SSB segments (and vice versa) are forbidden[cite: 1].
callsign.log or callsign.cbr (e.g., YO3KAA.log)[cite: 1].13.1 Diplomas will be awarded for places 1, 2, and 3 in each competition category[cite: 1].
13.2 Plaques are awarded to the first-ranked station on each continent, and diplomas for the top three in each country (provided that at least 50 validated links are made)[cite: 1].
14.1 The YO DX HF Contest arbitration is fully computerized[cite: 1].
14.2 A QSO is scored with 0 (zero) points under the following conditions[cite: 1]:
14.4 Sending the log acts as a declaration of strict rule compliance and agreement that decisions of the committee are final[cite: 1].