I'm a newbie on here and just dipping my toe into the world of BITX's
If you're running the radio at 13.8v is there enough wriggle-room to cope with a 1.4v drop using a bridge rectifier?
Reverse polarity diodes are a blunt instrument when protecting equipment, you still have to find a replacement fuse if you're in the middle of nowhere.
I've used a bridge rectifier with the incoming 13.8v on the AC inputs and, whatever way round you connect it, you will always get the correct polarities on the +ve and -ve sides.
Martin
