Belgian Special Prefix

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The Belgian Institute for Postal Services and Telecommunications (BIPT) has announced that all Belgian radio amateurs and Belgian radio clubs may replace the normal prefix 'ON' in their call sign by the special prefix OS during the period between 18th April 2021, to 12th December 2021. This measure does NOT apply to short callsigns (vanity calls) and the callsigns of unmanned stations.

The BIPT explains its decision to celebrate two special events of special importance this year:

  1. The "International Radio Amateur Day", on April 18, 2021.

  2. The anniversary of the first transatlantic radio transmission, on December 12, 2021. On that date, it will be 120 years ago that Guglielmo MARCONI first succeeded in bridging the Atlantic Ocean wireless with radio signals.