Yes Ermi, I enlisted when I was 17. After boot camp I attended Aviation Electronics Technician School (Class A) in Millington, TN. This was a 20 week, 8 hours per day course in basic electronics, soldering, the use of test equipment and troubleshooting. The meat and potatoes covered Ohms and Kirchoff, basic circuits, transmitters and receivers, radar and timing circuits, vacuum tubes and lightly on transistors. Then I was in the the AFTA program's initial start-up. (Advanced First Term Avionics) This was an intense 26 week course that nearly kicked my butt (but) I made it. So in all I had 46 weeks of schooling before I arrived at my next duty station in Albany, Ga. There were several "C" schools I went to that specialized on specific gear.
I have been involved in electronics basically my entire adult life. I owe the US Navy a lot. My bio is on QRZ.com