Many thanks to SWLing Post contributor, Giuseppe Morle (IZ0GZW), who shares the following: Dear Thomas my friend, I built another Tferrite, (TFERRITE 2), for medium waves-this time also with the shortwave option. A single variable capacitor, 800 pf, and a primary winding on the 2 ferrites of about 46 turns, a secondary winding of 3 [...]