Charts of RBN activity, active callsigns and (tbd) more stuff. A work in progress.
Unique active calls: 83085. Note that beacons and frequently "busted" callsigns like T2DE were not included here.
Does the Pareto principle ('80/20 rule') hold true for RBN spots?
As of today, the total number of activity hours (i.e. hours in which individual callsigns were spotted, with a lower threshold of 10 hours over the last year) registered by the RBN is: 5897183 from 83085 individual calls.
In order to fulfil the rule, 80% of 5897183 hours (= 4717746h) would have to be produced by 20% of 83085 stations (= 16617).
As of today, those 20% generated 1904108 hours of activity... Sorry, Pareto!
(Note: The minimum activity per callsign and year was 10 hours. If this threshold was increased to a more reasonable value, the 80/20 rule may hold true...)
Last modified: 2026-09-09 - Fabian Kurz, DJ5CW <fabian@fkurz.net> - Impressum / Datenschutz / Privacy Policy