wrote in message
ps.com...
Can I use an old computer for a power supply for my mobile 2 meter 50
watt radio? Will the radio put out the same power as if it was in the
car? It calls for 13.8 volts.

Is the 12 volt output rated at 50 watts, considering the efficiency factor?
I doubt that it is. A radio of that type might need as much as 8 amperes.