I built a QDX (Rev 3a) for 9v operation, and got a Bioenno battery to power it in the field.
The Bioenno, although nominally 9V, actually puts out 10.5 volts when fully charged. I'm not sure if I should use a buck converter to limit the voltage to exactly 9V. Any thoughts, or words of wisdom from experience?
I'd be happy to do some calculations on this, but I'm not really sure which numbers to look at to determine what's a safe operating voltage to avoid blowing out the output transistors.
Leigh KG7WED