EI4HQ

Here’s you’ll find links to a daily spectrogram for the NAVTEX MW sub-band, recorded at Cobh, Cork Harbour, Ireland, IO51uu during June 2026. I started saving these first, on the 7th of June 2026. Each spectrogram covers a 16h 44m period, that being the length of the longest night of the year here, with 15m…

The official NAVTEX Manual produced by the Swedish Maritime Administration on behalf of the Radiocommunications sub-committee of the International Maritime Organisation, introduces NAVTEX (NAVigational TEleX) as “…an international automated direct-printing service for promulgation of Maritime Safety Information (MSI), navigational and meteorological warnings, meteorological forecasts and other urgent safety-related messages to ships. It was developed to…