#OnThisDay in #TechHistory, Bell Labs announced the invention of the junction #transistor: ubm.io/29mC4Cb pic.twitter.com/FeC6Lep8HT
A16 Update: Alan Roe’s guide to music on shortwave radio goo.gl/fb/s2Ls6i#shortwave#swl#dx
MyLoTW is a viewer app for ARRL’s Logbook of the World dxcoffee.com/eng/2016/my-lo… #lotw #dx #hamr #hamradio @arrl pic.twitter.com/c6QtTIv8rC