TY - CONF T1 - Conquering The Skip Zone: Short Range Voice and Digital NVIS Communication T2 - HamSCI Workshop 2019 Y1 - 2019 A1 - Stephen Hamilton A1 - B. Lebiednik A1 - K. Hager JF - HamSCI Workshop 2019 PB - HamSCI CY - Cleveland, OH ER -