The winner of the QST Cover Plaque Award for June is Kazimierz “Kai” Siwiak, KE4PT, for his article “Is There an Optimum Height for an HF Antenna?” Congratulations Kai! The QST Cover Plaque award -- given to the author or authors of the best article in each issue -- is determined by a vote of ARRL members on the QST Cover Plaque Poll Web page. Cast a ballot for your favorite article in the July issue today.