Matthew,
My 12 volt QMX draws plus or minus 200 mA at first, then drops to 95 mA once the switching power supplies are working.
Is your current limit set high enough to allow the initial inrush current? I had my power supply set too low at first, around 140 mA,
and the voltage would drop dramatically as the current compliance kicked in. I thought there was a big short at first.
Since the radio wasn't actually running there was no USB connection, either.
?
For transmit I need to have the supply current set to 1.1 A or a bit higher.
?
Best of luck,
David N6AN
