It works picture www.n4iqt.com/dtv4x8/5vreg-mod.JPG The feed for 13v to the antenna was a ferite bead with 3 turns, it was attached to the board with orange hot glue. It connected to the 13v input to the ua78m06, for the mod I added a 7805 from the 18v lm317 to the bead rf choke. Stanley