How do DX expeditions work?

Why do hams go on DX expeditions?

To give others a rare contact. The ARRL's DXCC award needs confirmed contacts with 100 of 340 DXCC entities, and some entities have no resident hams at all. When a team activates one, thousands of DXers get a new entity. Island hunters add IOTA, which counts some 1,200 island groups.125

DX is ham shorthand for distance, and the chase is described in What is ham radio? The rarer the place, the bigger the crowd calling it. For the people who go, it is also an adventure: a small team, a hard-to-reach island and weeks of radio work far from home.

DXCC entities are not only countries. An island far enough from its mainland counts on its own. Rotuma, 646 km north of the main islands of Fiji, is a separate entity from Fiji although both use the prefix 3D2.21921

Which places are the most wanted?

Club Log ranks all 340 entities by how rarely they appear in the logs its users upload. In the data of October 15, 2026, North Korea tops the list, followed by remote Pacific islands of the US and Chile, French Kerguelen and disputed islands and reefs in the South China Sea.34

Source: Club Log Most Wanted data, October 15, 2026; prefixes from the ARRL DXCC list.42

A good expedition moves an entity down the list. The ARRL notes that the 2023 trip to Bouvet, 3Y0J, moved the island from second to tenth place.14

How is a DXpedition licensed?

The team needs a license from the country that owns the place, and often a separate permit just to land. DXCC credits only operations done with proper licensing and a real physical presence in the entity. For islands, the ARRL may ask for the landing permit and a statement from the ship's captain.7

Inside Europe it is simpler. Under CEPT Recommendation T/R 61-01, a ham from a CEPT country can operate on a short visit to another CEPT country without an individual temporary license, under the host country's rules.8 Most rare entities are far outside that system, and there the team applies to the local regulator for a call sign. How licenses work at home is in How do you get a ham radio license?

Landing permits are often the hardest part:

• Heard Island, VK0EK (2016). The Australian Antarctic Division, which manages the island's marine reserve, issued the final permit on March 1, 2016, three weeks before the first contact.9
• Baker Island, KH1/KH7Z (2018). The US Fish and Wildlife Service set strict conditions for a special use permit, and the permit capped the team at 11 operators on the island.1011
• Bouvet Island, 3Y0Z (2018). The landing permit was approved by the Norwegian Polar Institute.12

How much does a DXpedition cost, and who pays?

The big ones cost hundreds of thousands of dollars. The Baker Island trip of 2018 spent more than $470,000, half of it paid by the team. The 2023 Bouvet team raised $715,000. The 2026 Bouvet budget was $1.7 million, of which $1.2 million was the ship.111314

The operators pay a large share themselves.13 The rest comes from DX clubs, foundations and individual hams:

Small expeditions cost far less and still rely on sponsors. The Rotuma team of 2018 listed dozens of individual hams and DX groups as sponsors and mailed every individual sponsor a QSL card without being asked.19

What gear and logistics does it take?

Everything arrives by plane or ship: transceivers, amplifiers, antennas, masts, tents, generators and fuel. On Rotuma, diesel generators ran 24 hours a day. Weather decides the rest: in 2018 wind, fog and rough seas, then an engine fault, stopped the 3Y0Z team from landing on Bouvet at all.1922

The four-man Rotuma team of 2018 flew in with 250 kg of radio gear: two transceivers, two amplifiers, a Spiderbeam and vertical antennas. Another 150 kg of antenna material went ahead on the supply ship with the generators and diesel. One photo shows their 30/17/12 m vertical standing in the sea at high tide.19

On Bouvet in 2023 the 3Y0J team worked from tents with the radios on buckets. Its co-leader wrote that signals were weak, so they often called three to five times to log one contact.13

How is the team organized?

Around a leader and a QSL manager. Large teams have 12 to 24 operators: VK0EK on Heard and KH1/KH7Z on Baker had 14 each, and 3Y0K on Bouvet in 2026 had 24 from 14 countries. The 3Y0J team had three co-leaders and a media officer. Small island trips manage with four.936141319

A local contact matters as much as the operators. On Rotuma, 3D2AG, a ham living in Fiji, and the team's host arranged everything on the Fijian side before the Europeans arrived.19 Before a trip, the team announces the call sign, dates, bands and QSL route. DX calendars such as NG3K's Announced DX Operations and weekly bulletins such as 425 DX News collect these announcements.2829

What is a pile-up, and how do you work one?

A pile-up is a crowd of stations calling the DXpedition at once. To keep its own frequency clear, the DX station usually works split: it transmits on one frequency and listens on others, for example "up 5 to 15", that is 5 to 15 kHz above. Callers set their radios to split mode.23

The DX Code of Conduct sums up how to behave in a pile-up. Its main points:24

• listen, and listen again, before calling;
• call only if you can copy the DX station properly;
• do not trust the DX cluster for the call sign, check it by ear;
• never tune up on the DX frequency;
• send your full call sign, then listen for a reasonable interval, and do not call continuously;
• follow the operator's instructions, such as calling only from one area.

Morse code still carries much of the work: on Rotuma three quarters of the contacts were in CW.19 More on the code itself: Morse code.

How does FT8 work on a DXpedition?

Through a special mode of the WSJT-X software. The DXpedition is the Fox, the callers are Hounds, and one Fox can send up to five signals at once for up to about 500 contacts an hour in ideal conditions. The newer SuperFox mode, in WSJT-X 2.7.0, answers up to nine Hounds in one signal.2526

SuperFox also carries a one-time password, so a pirate cannot pose as the expedition. The key for it is issued by the NCDXF to the leader of a specific operation.26

When do DXpeditions happen?

When the weather and the permit allow, and the team watches the solar cycle and the season. NASA and NOAA announced in October 2024 that the Sun had reached the maximum of Solar Cycle 25. Critics questioned the Baker Island team for going in June 2018, near the bottom of the cycle.2711

Not every team can wait for good conditions: the Baker Island team answered its critics in the NCDXF newsletter.11 All three recent Bouvet trips, in 2018, 2023 and 2026, sailed from Cape Town in the southern summer, between January and March.221314

How do you get a QSL from a DXpedition?

Check the expedition's log on Club Log, then request the card there through OQRS, either direct or via the bureau. Expeditions can also upload their logs to the ARRL's Logbook of The World, which confirms the contact electronically for DXCC. Cards go out through the expedition's QSL manager.323019

• Log search. Club Log hosts DXpedition logs. Its log search page shows whether your call sign is in the log, band by band, without a login.34
• Live streams. Many expeditions upload contacts to Club Log as they happen, so you can see your QSO within minutes.35
• OQRS. An online QSL request: pay by PayPal for a direct card, or ask for a cheaper card via the bureau.32
• Bureau. A national QSL bureau exchanges cards in bulk, at a fraction of the cost of direct mail.33
• LoTW. To upload, a DXpedition needs a call sign certificate, and for some entities the ARRL asks for the landing permit or proof of entry.31

What QSL means, and what a card looks like, is in Ham radio call signs.

A real example: Rotuma 2018, 3D2EU

A German and Dutch team led by Hans, DL6JGN, operated from Rotuma Island as 3D2EU from late February to March 15, 2018. Rotuma counts as a separate DXCC entity and is IOTA OC-060. In three weeks the four operators logged 30,139 contacts, 22,275 of them in Morse code.1920216

Source: the 3D2EU team's website, archived in 2019, and the EUDXF announcement.1920

Rotuma has about 43 km² of land. It has been part of Fiji since 1881, but its people and language are Polynesian. The team stayed with local hosts, and the shipping, the generators and the fuel were arranged from Suva weeks ahead.19

To check a contact with 3D2EU today, search the call sign in the 3D2EU log on Club Log. It holds 30,510 contacts, slightly more than the team's own count at the end of the trip.34

Another example: Kosovo 2020, Z66DX

Six German hams flew to Kosovo on October 12, 2020, in the middle of the COVID-19 pandemic, and operated from Pristina as Z66DX from October 15 to 28. Kosovo has counted as a DXCC entity only since January 2018, so many DXers still needed it. Club Log holds 33,230 contacts from the trip.3839422

Source: the Z66DX team's website, archived in 2021, the DARC Mecklenburg-Vorpommern bulletin and Funkzentrum news of October 2020, and the EUDXF announcement.38394041

Compared with Rotuma, Kosovo needs no long journey: the team flew in and operated from the capital, Pristina. The hard part in 2020 was the pandemic itself, which is why EUDXF made an exception for a trip it would not normally fund.3841

The trip was also a farewell. Franz, DL9GFB, had been on more than 20 DXpeditions; he died on December 22, 2020, and Z66DX was his last.38 To check a contact with Z66DX today, search the call sign on Club Log.42

Famous DXpeditions in numbers

The big trips of the last ten years show the range. Heard Island and Baker Island each produced around 70,000 contacts with 14 operators. Bouvet turned one team back in 2018 and let the next log only about 19,000 contacts before 3Y0K logged more than 100,000 in 2026. Rotuma shows what four people can do.91122133719

Does PoC radio have anything like a DXpedition?

No. A PoC radio talks over the mobile network, so distance and propagation do not matter: a call to another continent sounds the same as a call next door. A DXpedition exists because ham radio signals have to cross that distance through the ionosphere, and a rare place on the air is hard to reach.

If you need to talk across a country without a license and without antennas, see What is a PoC radio? and the types of two-way radio.

Questions

Sources

1. DXCC · ARRL
2. ARRL DXCC List: current entities, January 2026 edition · ARRL
3. Most Wanted · Club Log knowledge base
4. Most Wanted list JSON API (data of October 15, 2026) · Club Log
5. Introduction to IOTA, a brief summary · IOTA Ltd
6. IOTA Directory: Oceania · IOTA Ltd
7. DXCC Rules (Section I, Rule 7; Section III, Rules 1–3) · ARRL
8. Recommendation T/R 61-01: CEPT Radio Amateur Licence · ECC, CEPT
9. Heard Island 2016 expedition news · Cordell Expeditions, archived
10. US Fish and Wildlife Service okays Baker Island DXpeditions, with strict conditions · ARRL