Prefix LT LR LS AY

[IK0ZCW]

On 22 May 1924 Ivan O'Meara (2AC) in Gisborne, New Zealand made the first trans-Pacific contact with Carlos Braggio (CB8) near Buenos Aires, setting a world record distance. To celebrate the centenary of this DX milestone, amateur radio operators from Argentina are allowed to replace their normal prefix from 3 UTC on 20 May until 3 UTC on 27 May: LU stations can use LT, LW stations can use LR, club stations can use LS, and "other institutions" can use AY.