I got started in electronics from CB and RC electronics. I got the geek/ham radio license myself, but never use it. I have a friend in the 10/11-meter business :wink: . Recently, I designed a simple circuit that can draw 800 amps for about 30 seconds from a 100-amp car alternator without damaging the alternator. It's basically a capacitance multiplier that takes two 12V batteries and puts them in series through relay/solenoids upon keying. I recently added common emitter, which has much less loss then emitter follower. The CBers call it a motor maul.