Radio20m

Radio20m — the complete companion for ham radio operators, from your first QSO to DXCC. Radio20m brings together a logbook, DX Cluster, POTA, propagation tools and a full technical reference in one app, built to keep the operator focused on the radio, not on logging overhead. 📻 QSO Logbook Log contacts with automatic band detection, edit and delete, fingerprint-based deduplication, and DXCC/Grid Square progress tracking. See your contacts on a map color-coded by band, with quick search and stats right at the top of the screen. 🔄 ADIF import/export Import your history from other loggers with byte-accurate ADIF parsing and automatic hash-based deduplication, with a preview before confirming. Export anytime — no lock-in. 📖 Callbook Look up any callsign, see your contact history with that station, add personal notes, and get the country flag identified automatically. 🌐 Multi-node DX Cluster with RBN Follow real-time spots from multiple nodes, with mode classification, continent, CQ Zone and DX country flag. Filter by band, mode, continent or country, view everything on a dedicated map with a direction arrow, and check the most active bands and countries. 🏞️ POTA (Parks on the Air) Real-time park spots, a dedicated map, auto-spot, and a Park-to-Park contact badge. ✅ Automatic QSO confirmation Contacts between two Radio20m profiles are confirmed automatically — no third party required. 🔔 Spot Alert Create custom rules by callsign, prefix, DXCC entity or band, and get a push notification the moment that spot appears on the DX Cluster. ☀️ Radio Toolkit Real-time HF conditions, Solar Cycle phase (Cycle 25), geomagnetic field, solar wind, aurora, meteor scatter, local weather via grid locator, band plan (Brazil and US), and license class privileges. 🛰️ Satellite Tracker SGP4/SDP4 orbital propagation, upcoming pass predictions, and local notifications before each pass. 🗺️ Propagation Map Grayline, long path and short path lines, and an overlaid Maidenhead grid — all on a full-screen map. 🧮 22 calculators Link budget, EIRP/ERP, antennas (J-Pole, EFHW, NVIS, radials, quad/delta loop, magnetic loop), toroid/balun, portable battery and solar panel sizing, grid-square distance, and more. 📚 Quick reference Q-Codes, prosigns, phonetic alphabet (with audio), digital mode frequencies, and a callsign speller. 🎵 Morse/CW audio generator Turn text into Morse audio with adjustable Farnsworth/Wordsworth timing, and share it with one tap. 🌎 3 languages Portuguese, English and Spanish, with light, dark or system theme. 📱 Home screen widgets (Android) HF conditions, solar data and your station status right on your home screen — no need to open the app. Radio20m is built by a ham for hams: no visual clutter, no distractions, just what matters to log your QSO fast and get back to the next contact.