A couple of 5amp or 10amp Silicon diodes (5 watt rating) will give you a
voltage drop of about 1.2v or 12.6v feeding the board.
I had to crank up my power supply to 15.1v to get a consistent 12v out
of a 7812 feeding the mainboard.
tim ab0wr
On Sat, 02 Jun 2018 08:25:45 -0700
"KE0GYC" <dragonfanatic90@...> wrote:
I believe 13.8 is considered the upper limit for the uBITX main
board.? It should work fine as-is, but I wouldn't push it any hotter.
If you wanted to be extra careful, you may want to put a 12v voltage
regulator like a LM7812 inline with the main board's power.? The PA
power line (brown wire, IIRC) can run off the higher voltage just
fine and may get you a bit more power even.
