Charger for Portable Devices March 14, 2016 by dapj · Published March 14, 2016 · Last modified October 1, 2022
Ultimate Morse Code Web Site – PA3BWK September 5, 2009 by dapj · Published September 5, 2009 · Last modified October 27, 2019
Didactic Tech Training – SystemTechnik Germany November 8, 2011 by dapj · Published November 8, 2011 · Last modified January 16, 2020