Saturday, April 25, is the 28th International Marconi Day (IMD), organized by the Cornish Radio Amateur Club in Cornwall, UK. IMD recognizes the anniversary of the birth of wireless pioneer Guglielmo Marconi, born on April 25, 1874. Participating stations are expected to be on the air during the period 0000 to 2400 UTC (ie, starting the evening of Friday, April 24, in US time zones). The occasion offers an opportunity to contact historic Marconi-related radio sites around the world on HF.

Among stations planning to be on the air is VP8VPC in the Falkland Islands. The VPC suffix recalls the call sign of the Marconi spark transmitters in Stanley. The 150 kW transmitter built in 1915 fed seven 305-foot masts and operated on 60-70 kHz. It was the most remote and most powerful station in the Royal Navy's First World War network of stations. After the war VPC handled commercial message traffic to South America.

Certificate information and additional details are on the IMD website.