Back in February of 2021, I had a post up about the new 144 MHz on St Helena Island in the South Atlantic. On the 3rd of March, I reported that the beacon had been heard over 3000kms away in South Africa.
On the 9th of March 2021, the 144 MHz beacon was heard by David, V51DK on the west coast of Namibia over a 2253 km sea path.
V51DK who is located in the city of Swakopund has a very modest station and was just using a Diamond X200 vertical antenna at just 6-metres above ground level.
As the tropo forecast from F5LEN shows below, there were excellent conditions between St Helena and Namibia.
This form of maritime ducting is a regular occurrence is this part of the South Atlantic Ocean.
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