Worldwide MQTT subscription · 324 Maidenhead fields · map starts at IM (coverage depends on broker wildcard support)
Connection Starting…
Select a band using the buttons and/or a cell in the Maidenhead fields matrix.
Spots in window 0
Active grids 0
Last update UTC —
DIRECTION
SIGNAL
MIN SNR
Band activity: 0LowMediumHighVery high· relative to busiest band
Lines connect the approximate centres of the TX and RX Maidenhead locators. Click a line or marker for spot information. Grid-centre locations are approximate, not station antenna coordinates.
Click a cell to inspect matching spots. Counts are reports, not unique QSOs. Only active grids in the selected field are shown.
Live propagation map — IM
ALL · ALL
ALL · ALL
Azimuthal equidistant view shows up to 20,000 km from the map centre (nearly the entire globe). Use + / − to change the radius in 2,000 km steps (starting at 16,000 km); ↺ resets zoom to 20,000 km. Drag with your mouse or finger to rotate the Earth and change the map centre. Double-click to return to 65°N, 12°W. The flat basemap is used in this projection.
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Each active directed two-field path with at least 3 spots (for example, IM → FN) receives at least one line when the number of paths does not exceed the selected limit. Remaining lines are distributed in proportion to the number of spot reports per path, without exceeding the number of reports available. Opposite directions count as different paths. If more paths are active than the selected limit, the most active paths take priority. The selected time window determines which spots are eligible; matrix and rankings follow the selected field filter, or show worldwide activity in ALL mode.
324 Maidenhead fields — spot activity (18 × 18)
Click a field to filter the map and matrix. Click it again to show all fields.
Rows: latitude A–R (north at top). Columns: longitude A–R (west to east). Each spot counts once in its TX field and once in its RX field; if both ends share a field, it counts twice. In ALL mode, counts include worldwide received reports. With a field selected, counts include only spots involving that field.
Live spot details — 0 matching spots
Latest 1,000 reports matching the selected grid, band, SNR and time window (newest first). This table is not limited to the 500 paths drawn on the map.
Time (UTC)
Band
Frequency (MHz)
Mode
TX callsign
TX locator
RX callsign
RX locator
SNR (dB)
Distance (km)
Waiting for spots…
Path allocation — directional spots vs map lines
Each directed Maidenhead field path has its own row (e.g. EM → FN and FN → EM). Sorted by spot count, highest first. Only directional paths with at least 3 spots are eligible for map lines, regardless of the selected line limit. Paths with 1–2 spots remain in this audit with 0 lines. The azimuthal projection may clip lines outside its visible radius.