Long-term trends
How bands, participation, the community and operating modes change across all evaluated rounds.
Share by the number of distinct stations per band; the 100% base is the sum of stations across bands (one station can operate several bands). The band is taken from the entry category. Vertical lines mark the first appearance of a band in history.
Value for each round (thin line) and a 12-round moving average (bold line) – one year of the contest. Participations of the callsign are highlighted as dots in the chart.
Cell intensity corresponds to the selected metric in the round of that month.
Percentage of round entries submitted with an EDI log. From round 91, entries without a log do not count towards yearly totals.
Bars: callsigns appearing in a round for the first time in history. Line: cumulative number of distinct callsigns.
How many rounds a callsign entered per year: one-off participants vs. regulars. The last (incomplete) year may be skewed.
Share of QSOs by operating mode across all logs of a round (QSOs within the contest window). Only rounds with EDI logs.
The longest QSO (ODX) of each evaluated round on the selected band; the stepped line marks the running band record. Distances are computed from locators, QSOs within the contest window from EDI logs only; the band is taken from the entry category.
Median and interquartile range (Q25–Q75) of QSO distance by calendar month, aggregated across all years – when propagation (tropo) tends to be best.
Winning score vs. the median points of all approved entries on the band in each round – how scores inflate over time.
Comparison of the number of distinct stations (by entry locator) in big squares between two years: green squares gained stations, red lost them, grey unchanged. The number in a square is the B − A difference.
Percentage of round entries in DX categories (foreign stations).