The ARRL is celebrating the 150th anniversary of the birth of ARRL’s first president and co-founder Hiram Percy Maxim (HPM), W1AW, born on 2nd September 1869.

The ARRL will hold an operating event this summer to celebrate HPM’s legacy from 0000 UTC on August 31st, and continue until 2359 UTC on 8th September 2019. It is open to all radio amateurs.

W1AW and all ARRL members will append “/150” to their call signs during this event (DX operators who are ARRL members may operate as <call sign>/150, if permitted by their country of license.)

More Information - http://www.arrl.org/news/view/arrl-announces-happy-150-hiram-percy-maxim-birthday-celebration