Power supply voltage does not matter for RX. It only makes a difference on TX. You could try and figure out how the output transformer is wired, but that is difficult without removing it. I would suggest powering it at 9V and seeing what the power output is. If it is a 9 V unit, power should be 4-5 W on all bands. If it is a 12 V unit, power will be about 2-3 W.?
--
73, Dan? NM3A
