ARO Field Atlas
← Map Rankings

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 38SOTA 831216,9022162026-06-28
🥈HB9ISN POTA 54SOTA 19733,095272026-06-28
🥉HB9CYX POTA 22SOTA 40622,3182142026-06-27
Rank:4HB9CEV SOTA 53531,3231132026-06-27
Rank:5HB9CBR SOTA 52523,9181112026-06-12
Rank:6HB9BCK POTA 18SOTA 34522,3502102026-06-22
Rank:7HB9CRY POTA 17SOTA 33501,469292026-06-25
Rank:8HB9HUP POTA 17SOTA 27441,007292026-06-27
Rank:9HB9HBV POTA 13SOTA 30439132122026-06-23
Rank:10HB9PIM SOTA 42423991132026-06-27
Rank:11HB9HBU POTA 12SOTA 30428612122026-06-23
Rank:12HB9DQM SOTA 42421,104192026-06-27
Rank:13HB9INY POTA 21SOTA 20416172112026-06-15
Rank:14HB9DIZ POTA 12SOTA 27391,5302112026-06-07
Rank:15HB9FHX POTA 10SOTA 28385152112026-06-26
Rank:16HB9FZC SOTA 3737295182026-06-14
Rank:17HB9NBG SOTA 3636344182026-06-14
Rank:18HB9AFI SOTA 36361,537142026-06-16
Rank:19HB9EAJ POTA 2SOTA 33351,421292026-06-20
Rank:20HB9GFQ POTA 6SOTA 28341,172262026-06-16
Rank:21HB9GIN SOTA 3131388182026-06-27
Rank:22HI8AM POTA 26SOTA 2281,001222026-04-26
Rank:23HB9HZC POTA 27SOTA 1281,522232026-04-20
Rank:24A65D POTA 27271,502122026-04-20
Rank:25HB9EVF POTA 1SOTA 23241,1792112026-06-27
Rank:26HB9ELZ SOTA 2424429192026-06-13
Rank:27HB9CGA SOTA 2424867152026-06-15
Rank:28HB9HCS POTA 1SOTA 2223474272026-06-14
Rank:29HB9TWM SOTA 22225351122026-06-26
Rank:30HB9HIC SOTA 2222502142026-06-24
Rank:31HB9FRP POTA 5SOTA 16212192102026-06-20
Rank:32HB9DGV POTA 8SOTA 1321572252026-06-28
Rank:33HB9DLT POTA 2020988112026-06-28
Rank:34HB9TVK SOTA 1919502142026-06-11
Rank:35HB9BQU POTA 4SOTA 1519577272026-06-25
Rank:36HB9LEK SOTA 1818147162026-05-24
Rank:37HB9HXX POTA 4SOTA 1418137282026-06-01
Rank:38HB9IJS SOTA 1717216182026-06-07
Rank:39HB9HXJ SOTA 1717371192026-06-27
Rank:40HB9HWI POTA 1SOTA 1617236252026-06-01
Rank:41HB9IQL SOTA 1616421142026-06-24
Rank:42HB9GUX POTA 8SOTA 816304252026-04-23
Rank:43HB9DBM POTA 3SOTA 1316300282026-06-24
Rank:44HB9WDE SOTA 1515143182026-05-30
Rank:45HB9IMQ POTA 5SOTA 1015206262026-06-07
Rank:46HB9HWJ SOTA 1515179182026-06-27
Rank:47HB9FUE SOTA 1515319142026-05-09
Rank:48F4MFS POTA 1515787122026-06-08
Rank:49HB9TNF SOTA 1414212142026-06-21
Rank:50HB9OME POTA 3SOTA 1114352262026-06-23
Rank:51HB9IAB SOTA 1414294132026-06-24
Rank:52HB9CDH POTA 2SOTA 1214493282026-06-13
Rank:53HB9EKO POTA 2SOTA 11131652102026-06-20
Rank:54HB9JAY SOTA 1212211152026-06-13
Rank:55HB9HXG SOTA 1212153142026-06-14
Rank:56HB9HWF POTA 7SOTA 512268242026-05-17
Rank:57HB9HOR POTA 4SOTA 812190252026-06-24
Rank:58HB9EIV SOTA 1212149142026-06-20
Rank:59HB9BHU SOTA 1212246172026-05-30
Rank:60HB3YIY SOTA 121299152026-06-06
Rank:61NK4Q POTA 11111,219112026-05-09
Rank:62HI8D POTA 11111,544112026-06-14
Rank:63HB9HDV POTA 1111288112026-05-10
Rank:64HB9HDC POTA 1SOTA 1011436282026-06-27
Rank:65HB9ENL SOTA 1111137182026-06-20
Rank:66HI3NLER POTA 1010229112026-06-25
Rank:67HB9HBT SOTA 101059142026-06-28
Rank:68HI3TAR POTA 4SOTA 59373232026-06-23
Rank:69HB9JNH POTA 99232112026-05-21
Rank:70HB9IIO POTA 2SOTA 79193242026-06-01
Rank:71HB9HXH POTA 99204112026-06-21
Rank:72HB9HUT SOTA 99174132026-06-14
Rank:73HB9BHW SOTA 99214132026-06-18
Rank:74HB9HGW POTA 5SOTA 3890242026-06-28
Rank:75HB9GVW SOTA 8884132026-06-14
Rank:76HB9CZF POTA 1SOTA 78157242026-06-26
Rank:77DC6ST POTA 88248122026-06-14
Rank:78HI8AN POTA 77812112026-06-14
Rank:79HB9FMC POTA 7773112026-05-20
Rank:80HB9EIZ SOTA 77133152026-04-25
Rank:81HB9BAB SOTA 77694142026-06-27
Rank:82HB9/M0YCJ SOTA 77109122026-04-05
Rank:83HB9/LZ1EEA SOTA 7731132026-04-30
Rank:84HB3YPH SOTA 7791122026-03-17
Rank:85HB3YNL SOTA 77109132026-06-27
Rank:86HI5YJM POTA 5SOTA 161,347222026-06-25
Rank:87HI5PPH POTA 661,814112026-06-26
Rank:88HB9JOE SOTA 6688162026-05-29
Rank:89HB9HTP SOTA 6647132026-04-05
Rank:90HB9HRJ POTA 2SOTA 46130232026-05-17
Rank:91HB9FVF SOTA 6651152026-06-06
Rank:92HB9/DF7TR SOTA 66117152026-06-27
Rank:93HI5ATA POTA 55586112026-06-20
Rank:94HB9WDF SOTA 5548152026-05-30
Rank:95HB9VQS SOTA 5543122026-05-24
Rank:96HB9IRX POTA 1SOTA 4537232026-05-25
Rank:97HB9ILY SOTA 5539122026-06-24
Rank:98HB9IKS SOTA 5542142026-06-21
Rank:99HB9HNT SOTA 5559142026-05-02
Rank:100HB9DST SOTA 5561142026-05-25

Data last refreshed: 2026-06-28

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