NDB Outer Gabbard Lightvessel *GA :


the 6 maritime radiobeacons Smiths Knoll Lv *SK, Goeree Lt *GR, Dudgeon Lv *LV, Outer Gabbard Lv *GA, Cromer *CM, and Noord Hinder Lt *NR formed a network on their working frequency, where each of the stations was transmitting the callsign and a dash for 1 minute each, giving the ship's radio operator good bearings to several fixed points in short time. A special item of this network was the use of a defined pitch of the dash: here it was 670 Hz to differentiate from other signals. With the use of GPS (and DGPS) signals this service became obsolete.


no recordings available


verification by PPC (Reinhard Klein-Arendt, 1986)
here is a fine letter from the headquarters of all the lighthouses and -vessels, confirming reports of Smith's Knoll, Dudgeon, and Outer Gabbard (Rudy van Dalen, 1987)
see the picture from the above entry in better resolution






Frequencies Morse Telegraphy: