ARO Field Atlas
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Activation Leaderboard

Top operators ranked by radio contacts, unique locations, and program diversity across POTA (Parks), SOTA (Summits), WWFF (Nature Reserves), GMA (Mountains), and IOTA (Islands).

All time This year This month
What do these terms mean?

Entities: Unique parks, summits, reserves, or other outdoor locations registered in programs like POTA, SOTA, WWFF.
QSOs: Radio contacts made during activations (short for "QSO", a Q-code meaning a two-way contact).
Programs: Outdoor radio programs (POTA = Parks on the Air, SOTA = Summits on the Air, WWFF = World Wide Flora and Fauna, GMA = Global Mountain Activity, IOTA = Islands on the Air).
Countries: Number of distinct countries where the operator has activated entities.

Activation Leaderboard
#Callsign Entities QSOs ProgramsCountriesLast active
🥇HB9BIN POTA 150SOTA 59474490,1392262026-06-20
🥈HB9DQM SOTA 72972932,4421252026-06-24
🥉HB9BQU POTA 13SOTA 61062331,7192262026-06-20
Rank:4HB9CBR SOTA 56056075,3821252026-06-12
Rank:5HB9CEV SOTA 53953939,9621242026-06-23
Rank:6HB9CRY POTA 45SOTA 40845316,3592252026-06-19
Rank:7HB9DST SOTA 45045020,3221252026-05-25
Rank:8HB9AFI SOTA 40440458,8521252026-06-16
Rank:9HB9HBV POTA 32SOTA 33536711,6982252026-06-23
Rank:10HB9EVF POTA 2SOTA 35635821,7582252026-06-20
Rank:11HB9HBU POTA 24SOTA 3183429,8852252026-06-23
Rank:12HB9NBG SOTA 33033010,9111202026-06-14
Rank:13HB9JOE SOTA 3283285,9941252026-05-29
Rank:14HB9FZC SOTA 3283289,6621202026-06-14
Rank:15HB9BCB POTA 12SOTA 28830033,4582262026-05-28
Rank:16HB9BAB SOTA 29829835,7131252026-06-19
Rank:17HB9CYX POTA 41SOTA 24428516,2342252026-06-23
Rank:18HB9HCS POTA 5SOTA 27127611,0932252026-06-14
Rank:19HB9GIN SOTA 2712717,3901182026-06-17
Rank:20HB9FPM SOTA 2592592,7851252025-10-19
Rank:21HB9GKR SOTA 2542547,4671252025-07-05
Rank:22HB9PIM SOTA 2422427,1791192026-06-24
Rank:23HB9DIZ POTA 38SOTA 20123911,0232262026-06-07
Rank:24HB9DGV POTA 8SOTA 22823622,0742252026-06-18
Rank:25HB9TVK SOTA 23123114,6911252026-06-11
Rank:26HB9FRP POTA 29SOTA 2012302,1952212026-06-20
Rank:27HB15SOTA SOTA 23023017,0291242021-05-08
Rank:28HB9DBM POTA 7SOTA 2182259,5972262026-06-24
Rank:29HB9FHX POTA 26SOTA 1832093,2332252026-06-15
Rank:30HB9TWM SOTA 2032039,1521252026-06-18
Rank:31HB9/DL6GCA SOTA 1961964,6541222026-05-23
Rank:32HB9DPR SOTA 1941944,8161252026-05-21
Rank:33HB9BCK POTA 38SOTA 15319120,7752252026-06-22
Rank:34HB9IIO POTA 9SOTA 18018911,2262142026-06-01
Rank:35HB9AFH SOTA 1871875,7321242025-04-27
Rank:36HB9BXQ SOTA 1841848,4781242026-05-23
Rank:37HB9EIV POTA 7SOTA 1731805,6982252026-06-20
Rank:38HB9EAJ POTA 3SOTA 17217513,1932222026-06-20
Rank:39HB9HCI SOTA 1721722,1961232026-06-04
Rank:40HB9BHW SOTA 17017010,6801252026-06-18
Rank:41HB9HDI POTA 1681685,376122026-04-19
Rank:42HI8D POTA 16116113,737112026-06-14
Rank:43NK4Q POTA 16016013,061112026-05-09
Rank:44HB9EWO SOTA 1581583,9991202024-04-27
Rank:45HB9GUX POTA 15SOTA 1421576,4772252026-04-23
Rank:46HB9BHU POTA 1SOTA 1541555,4712252026-05-30
Rank:47HB9HNT POTA 2SOTA 1521544,4792182026-05-02
Rank:48HB9FUE SOTA 15115110,3771242026-05-09
Rank:49HB9ELZ SOTA 1461465,7101242026-06-13
Rank:50HB9TNF SOTA 1391398,8811142026-06-21
Rank:51HB9LEK POTA 1SOTA 1331342,9812162026-05-24
Rank:52HB9GVW SOTA 1341343,8591212026-06-14
Rank:53HB9FVF SOTA 1281283,2231242026-06-06
Rank:54HB9EKO POTA 9SOTA 1171263,8162252026-06-20
Rank:55HB9GFQ POTA 16SOTA 1071234,4122142026-06-16
Rank:56HI8AM POTA 117SOTA 41217,654242026-04-26
Rank:57HB9ZAP SOTA 1161164,5581252026-06-18
Rank:58HB9HUP POTA 26SOTA 901163,8402182026-06-21
Rank:59HI8AN POTA 1141146,680112026-06-14
Rank:60HB9CYV POTA 3SOTA 1081116,7092172025-12-06
Rank:61HB3YNL SOTA 1061062,3111102026-05-23
Rank:62HB3XXX SOTA 1041041,4601242023-05-15
Rank:63HB3XTZ SOTA 1031031,3741172025-08-06
Rank:64HB9CDH POTA 9SOTA 931028,0482252026-06-13
Rank:65HB9/F5HTR SOTA 1021023,4961192026-05-17
Rank:66HB9IAB SOTA 1011016,8421132026-06-24
Rank:67HB9/MM0YCJ SOTA 1011011,340192020-09-24
Rank:68HB9CGA SOTA 10010024,4381182026-06-15
Rank:69HB9BQB POTA 6SOTA 941004,2782262026-06-17
Rank:70HB9JAY SOTA 98982,2481212026-06-13
Rank:71HB9HTM SOTA 95951,4111242024-11-10
Rank:72HB9OME POTA 10SOTA 84949,7242142026-06-23
Rank:73HB9HXJ SOTA 93933,0381172026-06-20
Rank:74HB9CLT SOTA 93934,2961182026-04-29
Rank:75HB9AXL SOTA 91914,1121112021-09-02
Rank:76HB9BYZ SOTA 90901,0981132017-04-10
Rank:77HB9IQL SOTA 87872,2831242026-06-15
Rank:78HB9EIZ POTA 2SOTA 85874,9862202026-04-25
Rank:79HB9HZC POTA 56SOTA 30864,2882112026-04-20
Rank:80HB9CZF POTA 1SOTA 84853,7912262026-05-29
Rank:81HB9HBT POTA 1SOTA 82838732222026-06-21
Rank:82HB9EWU SOTA 82821,3631252026-05-22
Rank:83HB9BNC SOTA 80802,155142025-11-13
Rank:84HB9AGO SOTA 808012,8741142025-07-06
Rank:85HB9BGG SOTA 79791,5461152017-09-15
Rank:86HB9RVS SOTA 77778221102014-03-17
Rank:87HB9IJS SOTA 76762,4601172026-06-07
Rank:88HB9HDC POTA 9SOTA 67765,2462172026-05-30
Rank:89HB9GHJ SOTA 7676760142021-07-05
Rank:90HB9SOTA SOTA 75752,4231202026-05-30
Rank:91HB9WDE SOTA 72729231222026-05-30
Rank:92HE8AFI SOTA 70702,282172009-12-22
Rank:93HB9SVT SOTA 69691,5911232019-08-18
Rank:94HB9CKV SOTA 69693,858142025-10-15
Rank:95HB9HAT SOTA 68685,739132025-08-10
Rank:96HB9ISN POTA 50SOTA 17672,888262026-06-23
Rank:97HB9WDF SOTA 65658861212026-05-30
Rank:98HB3YPH SOTA 65657371242026-03-17
Rank:99HB9HVK SOTA 63632,723132019-10-27
Rank:100HB9CGL SOTA 63632,142162026-06-18

Data last refreshed: 2026-06-24

As we onboard more countries, the leaderboard will grow. Currently showing data for Switzerland, Liechtenstein, and the Dominican Republic.