Hi bil2;
Had to laugh whrn you mentioned about using a buddy box. I don't use one. Was teaching this guy that was built like a wrestler and I'm just a little shrimp. Plane is heading for the turf in a spiral dive, yanked the transmitter out of his hand to save it. Wasn't sure whether to run like H or what, anyway he was glad I saved his plane. Went through the glow thing since the early 60s. As said, there were no instructors. Radios were not that reliable back then so didn't whether it was me or the radio that caused the prang. Electrics put the spice back into flying again. 69 yrs old and feel like i'm starting all over.