One of the best kept secrets of amateur radio is the amazing QEX Magazine published by the ARRL and edited by my guest today, Kai Shiwiak, KE4PT.  If you are a home brewer and want a more indepth amateur radio technology understanding, then QEX should be on your desk every month. Kai provides a fascinating look at home-brewing, the digital modes, and modest antennas for the antenna challenged ham in this episode of QSO Today.