Doug KF5BOC and Bill WB8ELK Preparing a Ham Radio 2.0 Balloon Launch – Dayton 2019 Full size is 768 × 1024 pixels Karl K9LA - Presentation on Propgation at Ham Radio 2.0 - Dayton 2019 » « Bryant KG5HVO - Presentation on Youth Contesting at Ham Radio 2.0 - Dayton 2019
