This year marks the 150th anniversary of the birth of the League’s first president and cofounder, Hiram Percy Maxim (HPM), W1AW. HPM was born on September 2, 1869.

As has been done with earlier birthday milestones, ARRL is again holding an operating event to celebrate HPM’s legacy.

Happy 150! The Hiram Percy Maxim Birthday Celebration!

This event is open to all amateurs, and the goal is straightforward: Find stations operating in the event, many adding “/150” to their call signs, and contact as many as possible during the 9-day celebration on each of the event bands (using any/all of the 3 event modes on each band).

The 9-day event begins 0000 UTC August 31 and runs until 2359 UTC September 8, 2019.