Greyline Map — live day/night for HF DXing
Free web tool by Andrea Bernardo IK2XDE (XDEnews.net, The Italian Dx Network) that shows the greyline, the twilight band along the day/night, in real time. Around sunrise and sunset low-band HF signals on 160, 80 and 40 metres can propagate over very long distances between stations near the terminator.
Features
- Live terminator and greyline band (sun from −8° to +2°), time slider ±24 hours.
- Home Maidenhead locator from 4 to 10 characters (e.g. JN45MQ97XX) or GPS position, with locator grid overlay.
- CQ zone and ITU zone boundaries with zone numbers, country prefixes from cty.dat.
- Flat, Natural Earth, azimuthal beam map, globe and zoomable satellite map views.
- Sun and moon position, moon phase, sunrise and sunset in UTC at your QTH.
- Click any DX point for locator, CQ/ITU zone, distance, short path and long path bearing.
- 4K PNG export, English and Italian interface.
Mappa greyline gratuita per radioamatori: giorno/notte in tempo reale, griglia locator Maidenhead, zone CQ e ITU, Sole e Luna, mappa azimutale per le direttive.