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Who hears me
Enter a callsign and see where you're heard: which Reverse Beacon Network skimmers and which PSK Reporter receivers picked you up, in CW, RTTY, FT8, FT4 and the other digital modes, how strong and on which band, on the map and as a list.
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Signal over distance
One dot per receiver, band and mode. Tap a band in the legend to hide it, hover over it to highlight it. Drag out an area to zoom in (dragged horizontally only: just the distance); the view stays put when refreshing, and a double click or “Auto zoom” shows everything again. With “also who didn't hear you” there's a strip under each chart: one line per receiver (grouped to about 20 km) that heard others on the same bands and modes in the time span, but not you. That way you can see where the cloud is thin because nobody is listening, and where because you're not getting through. Hollow dots: location only approximate (centre of the country). Via the F2 layer one hop reaches about 4000 km; where the cloud drops off in steps, the next hop often starts. The numbers are also in the per-receiver list below.
Where the spots come from
The Reverse Beacon Network is a network of automatic receivers (skimmers) that log which callsign they hear on which band and when, in CW and RTTY with signal-to-noise ratio and speed, plus FT8 and FT4 in a separate stream. This page records both streams itself, logged in with a real callsign as on the DX cluster. Where a skimmer is located comes from the RBN skimmer list (locator, fetched once a day); if it's missing there, it sits in the centre of its country, marked “approx.” in the list.
PSK Reporter (Philip Gladstone, N1DQ) collects what digital mode software at radio amateurs' stations around the world decodes: mostly FT8 and FT4, plus JS8, WSPR, PSK and more, each with the receiver's locator. For callsigns from Germany, Austria, Switzerland, Liechtenstein and Luxembourg this page records the stream itself, via the MQTT service by Tom M0LTE. For all others it asks PSK Reporter: then only the last 24 hours, and at most every five minutes.
You're only heard while you transmit: calling CQ or working a QSO raises the hit count. Neither network hears plain voice. Spots are kept for two days. Without your own location, the distance is calculated from your locator (if PSK Reporter knows it) or from the centre of your country.
Map: land areas from Natural Earth (public domain), in German-speaking countries the base map of the xOTA map (Protomaps, data © OpenStreetMap contributors, ODbL), map library MapLibre (BSD). Locations of SOTA summits from the SOTA summit list, bunkers from WWBOTA, castles from the COTA group.