1. Contest sponsors
The "Soyuz Radioljubitelej Rossii" (Union of Radioamateurs of Russia), SRR is pleased to announce 30 International "Russian DX Contest"

2. Contest dates, bands, and modes

  • 1200 UTC 18 March till 1159 UTC 19 March 2023
  • 160, 80, 40, 20, 15 and 10 meters. No contest QSOs on WARC bands;
  • CW and Phone.

3. Entry categories:

  • SOAB–MIX - Single Op, All Bands, MIXED
  • SOAB–MIX-LP - Single Op, All Bands, MIXED, Low Power 100 watts
  • SOAB-MIX-QRP - Single Op, All Bands, MIXED, QRP 5 watts
  • SOAB–CW - Single Op, All Bands, CW
  • SOAB–CW–LP - Single Op, All Bands, CW, Low Power 100 watts
  • SOAB–SSB - Single Op, All Bands, SSB
  • SOAB–SSB-LP - Single Op, All Bands, SSB, Low Power 100 watts
  • SOSB - Single Op, single band, MIXED (6 different band entries, separately 160, 80, 40, 20, 15, 10 m)
  • MOST - Multi Op, All Bands, Single transmitter, MIXED
  • MO2T - Multi Op, Two transmitters, MIXED
  • MM - Multi Op, Multi transmitters, MIXED

3.1 The participant can operate and submit the log for two different single band categories to be eligible for awards, for instance, 10m and 80m as per 11.3.

3.2 SOSB entrants may operate on other bands during the contest and are encouraged to submit their entire logs to help in the log cross-checking process. These contacts will not affect the SOSB score but will be credited to other stations.

3.3 Results will be listed separately for European Russia, Asiatic Russia and by each continent.

4. Club Competition
The club score is the total aggregate score from logs submitted by club members. Participation is limited to club members usually residing within the same DXCC country. Contest expeditions are eligible for club competition. The participant’s log must clearly indicate the full name of the club in the field CLUB: [text].

5. General Rules
5.1. All transmitters, receivers, and amplifiers must be within a single 500-meter diameter circle. Antennas must be physically connected by RF transmission lines to the transmitters and receivers, except as described in 5.1.5.

5.1.1. Remote operation is permitted if the physical location of all transmitters, receivers, and antennas are at one station location as described in 5.1. A remotely operated station must obey all station license, operator license, and category limitations. The call sign used must be one issued or permitted by the Regulatory Authority of the station location.

5.1.2. The use of publicly available potting assistance (DX cluster, CW Skimmer etc) is allowed for all entries. Self-spotting is permitted.

5.1.3. The use of any calls other than participant’s for any reason including keeping the run frequency on any band, making schedules, DX-spotting, moving the multipliers is prohibited.

5.1.4. The use of one and only one remote receiver located within 25 kilometers of the main transmitter site is permitted, in addition to the receiver at the transmitter site is allowed for all entries.

5.1.5. The use of any remote receivers other than described in 5.1.5 are prohibited. Violators will be subject to disqualification.

5.2. Single Operator participants may change bands and modes without restrictions. Only one signal can be transmitted at any given time.

5.2.1. Single Operator categories: one person (the operator) performs all operating, logging and spotting functions. Any other human assistance will result in reclassification into the Multi Operator category or disqualification at the discretion of the contest committee.s

5.3. MOST stations are subject to a 10 minutes band change rule. Mode change within current band is allowed without limitations.

5.3.1. Start time is determined by the time of the first QSO made on the band. The band may be changed after 10 full minutes have elapsed.

5.3.2. Only one signal can be transmitted at any given time. Exception: two signals on two different bands are allowed if (and only if) the station on another (and only one) “multiplier” band works a new multiplier.

5.3.3. The “multiplier” transmitter is subject to its own 10 minute rule for band changes as described in 5.3.1.

5.3.4. Contacts which violate band change rules, should be clearly marked in the log with an X-QSO: key (as per 11.11 ). They will neither be counted nor penalized for an entrant, but will be counted for the station contacted.

5.3.5. Tampering with the QSO time to comply with the 10 minute rule (“rubber clocking”) will result in disqualification.

5.4. MO2T (Multi Op, Two transmitters): A maximum of two transmitted signals at any time on different bands. Each transmitter may make a maximum of 8 band changes in any clock hour (00 through 59 minutes). For example, a change from 40 meters to 80 meters and then back to 40 meters constitutes two band changes. Both transmitters may work any and all stations. A station may be worked twice per band (CW and SSB) regardless of which transmitter is used.

5.5. MM (Multi Op, Multi transmitters): A maximum of six transmitted signals, one per band at any one time. All equipment (transmitters, receivers, amplifiers, antennas, etc.) must be located in same DXCC entity, including remotely controlled equipment. Six bands may be activated simultaneously. Use a separate serial number sequence for each band. Limits in 5.1 do not apply.

5.6. All MIXED categories entrants can work the same station twice per band (CW and SSB).

6. Exchange:
6.1. Non-Russian stations: signal report + QSO number, starting with 001.

6.2. Multioperator (MOST, MO2T, MM) may alternativley use separate serial numbers for each band.

6.3. Russian stations: signal report + oblast code as per attached list.

7. QSO Points.
7.1. Russian stations:

  • QSO with your own country (Russia on your continent) – 2 points,
  • QSO with Russia on another continent – 5 points,
  • QSO with a different country on your continent – 3 points,
  • QSO with another continent – 5 points.

7.2. Non-Russian stations:

  • QSO with Russian station – 10 points,
  • QSO with your own country – 2 points,
  • QSO with a different country on your continent – 3 points,
  • QSO with another continent – 5 points.

7.3. Kaliningrad (UA2F), Franz Josef Land (RI1FJ) and Russian Antarctic stations (RI1AN) each count as a separate DXCC entity and a separate Oblast (double multiplier) with Kaliningrad counts as European Russia for scoring purposes.

7.4. Maritime mobile (“/MM”) stations do not count as multipliers and score 5 points for all participants.

7.5. SWL points are calculated along the same principles as described in 7.1 and 7.2.

8. Dupes
8.1. Dupes are contacts made with the same station on the same band and mode. If the first contact between stations is valid, dupes have 0 points value. If the first contact is not valid, then second (dupe) contact is accepted.

8.2. Dupe contacts are not penalized; they do not have to be marked in the log. All entrants are strongly recommended to leave DUPES in the log.

9. Multipliers
There are two types of multipliers:

  • One multiplier for each different oblast contacted on each band, including UA2F, RI1FJ and RI1AN as per 7.3.
  • One multiplier for each different country (DXCC entity list + WAE multipliers list) contacted on each band.

10. Final Score
10.1. The final score is the result of the total QSO points multiplied by the sum of oblast and country multipliers.

11. General Log Submission Requirements
11.1. Logs are accepted in CABRILLO file format only.

11.2. Filename of your log should be yourcall.log or .cbr. Example: UA1AAA.log.

11.3. If a competitor claims two separate bands in the SOSB category (as per 3.1 ) these two bands should be clearly marked. Example: CATEGORY-BAND: 10m, 15m.

11.4. Russian stations will include their RDA in the LOCATION: field.

11.5. Web upload is the only method of log submission. Web upload of logs is available at:

11.6. All QSO times must be in UTC.

11.7. All sent and received exchanges must be clearly shown in the log.

11.8. The header of the electronic log must specify entry category and your full mailing address to receive the awards.

11.9. Please do not remove duplicate QSOs from the log.

11.10. Multioperator logs (MOST and MO2T) must identify which transmitter made each QSO. For MOST entries RUN =0, MULT =1. For MO2T entries RUN1 = 0, RUN2 = 1. Alternative identifcation is not allowed. The logs without such identification will be reclassified to Check Log.

11.11. Logs aiming for the top 3 position in any contest category (excluding SWL entry) must indicate the frequency of every QSO made (using transceiver CAT) with a minimum resolution of 1 kHz.

11.12. Any QSO marked with the key X-QSO: will be ignored in your log and credit will be given to the other station.

12. Log Submission Deadline
12.1. Logs must be submitted to the contest sponsors within 14 days after the end of the contest (until 23:59 UTC on 02.04.2023).

12.2. Receipt of the log is confirmed on the "Logs received" page on RDXC Website.

12.3. Logs submitted after the deadline may be listed in the results, but are not eligible for awards.

13. Awards
13.1. pecial plaques for continental winners in the SOAB-MIX and SOAB-MIX-LP. For the complete list of sponsored plaques please visit

13.2. Every participant from Russia will receive a souvenir subject the terms below:

  • All-band entries confirmed at least confirmed 1,000 QSOs,
  • Single-band entries confimed at least confirmed 500 QSOs,
  • MIX-QRP entry confirmed at least confirmed 250 QSOs.

13.3. European participants will receive a souvenir for at least 750 confirmed QSOs with the Russian stations.

13.4. Non-European participants will receive a souvenir for at least 250 confirmed QSOs with the Russian stations.

13.5. All participants who have submitted the log will receive PDF participation certificates.

14. Contest-Related Information
14.1. Every participant who sends his electronic log will receive personal UBN-list with his claimed/confirmed results separately by bands/modes and QSO list, containing his errors and errors of worked stations. Confirmed Oblasts list for "Russia" award will be sent separately.

14.2. Russian Disctricts Award (RDA). All confirmed QSOs with the Russian stations will be atomatically accepted by the RDA without paper QSLs.

14.3. Any RDXC related questions should be sent to e-mail .

15. Judging
The Russian DX Contest Committee is responsible for checking and adjudicating the contest entries which is done electronically. Participants are requested to follow the rules and best amateur radio practices. Violation of the rules of the contest or unsportsmanlike conduct may lead to disciplinary action by the Committee in its sole discretion.

16. Penalties
Penalties are worth two times the QSO point value for the contact.

16.1. Penalty is appllied if:

  • incorrectly logged calls (Bad Call);
  • incorrectly logged exchange numbers;

16.2. QSO neither counted nor penalized for the following:

  • QSO time difference of more than 3 minutes (except systematic computer errors);
  • QSO bands or modes difference (except systematic computer errors);
  • 10 minute rule violation for MOST (as per 5.3.1 and 5.3.3 above);
  • Band change violation for MO2T (as per 5.4).

16.3. The log will be reclassified into Check Log in case of more than 75% score reduction after checking.

16.4. RDXC Contest Committee decisions are final.

RDXC Contest Committee invites all the radio amateurs from Russia and foreign countries to take part in 30 Russian DX Contest, which became one of the most popular contessts in the world.

  1. List of Russian Regions with useful info.
  2. Trophy.
  3. How to prepare and send the RDXC Log.