Grimeton Radio

Live, off-air, recording of a morse code (CW or continuous wave) transmission in English from station SAQ, Grimeton Radio, Sweden, on 16 November 2022 beginning at 16:00 UTC on a very low frequency (VLF) of 17.2 kHz. The signal originates from the historic Alexanderson alternator transmitter at Grimeton near Varberg on the southwest coast of Sweden, running at about 80 kW. The antenna is essentially omnidirectional.

The transmitter was tuned up before the broadcast with many sequences of VVV VVV VVV DE SAQ SAQ SAQ being sent. The message, titled UNESCO 50th Anniversary Telegram, began at 16:00 UTC, lasted about 9 minutes and 30 seconds, and is as follows:

CQ CQ CQ DE SAQ SAQ SAQQ THIS IS GRIMETON RADIO STATION SAQ IN A TRANSMISSION USING THE ALEXANDERSON 200 KW ALTERNATOR ON 17.2 KHZ. THE 16TH OF NOVEMBER 2022 MARKS THE 50TH ANNIVER4RY OF THE WORLD HERITAGE CONVENTION. UNESCO WORLD HERITAGE SITES ARE IRREPLACEABLE ASSETS OF HUMANITY BUT MANY OF THEM ARE THREATENED TODAY THROUGH UNCONTROLLED URBANIZATION, UNCHECKED TOURISM, ARMED CONFLICT AND CLIMATE CHANGE. TO ENSURE THEIR PROTECTION,INTERNATIONAL COOPERATION TO PROMOTE PEACE, INTERNATIONAL UNDERSTANDING AND SUSTAINABLE DEVELOPMENT IS MORE IMPORTANT THAN EVER. SIGNED: LENA SOMMESTAD, CHAIR SWEDISH NATIONAL COMMISSION FOR UNESCO, WORLD HERITAGE GRIMETON RADIO STATION AND THE ALEXANDER-GRIMETON FRIENDSHIP ASSOCIATION. FOR QSL INFO PLEASE READ OUR WEBSITE: WWW.ALEXANDER.N.SE DE SAQ SAQ SAQ

Note that indicates the start of a new paragraph; means end of transmission; and means end of work.

The broadcast was received by the Web-interface wideband software-defined radio at the University of Twente in Enschede, The Netherlands, with a "Mini-Whip" antenna in CW mode with 0.40 kHz RF filtering and real-time noise reduction. The CW tone is about 760 Hz and the message was sent at about 15 words per minute. Reception was fairly good with some occasional atmospheric noise (QRN).