Amateur Radio A Current Choke Balun with a 3D Printed Housing A Ground-Elevated Vertical Based on 5.6m Whip — Improved A 50-ohm Full-Wave Loop for 2m Band Setting Up a CW Skimmer Server by a Hermes-Lite2 SDRA Current Choke Balun with a 3D Printed HousingA Ground-Elevated Vertical Based on 5.6m Whip — ImprovedA 50-ohm Full-Wave Loop for 2m BandSetting Up a CW Skimmer Server by a Hermes-Lite2 SDRA digiPi APRS Unit Based on a digiPi HATA Ground-Elevated 5.6m Whip Vertical Antenna: Build GuideAmateur Radio GallerySnapshots from our latest tech experiments and DIY tutorials.