On 24/02/2024 07:27, Hans Summers wrote:
The official spec of USB 2 is 5V 500mA max. But probably many modern ports can exceed that.
I was surprised when Dan said it worked.
A QDX might take up to 700mA at 12 volts transmit.
From 5 volts a buck converter would take more than twice 700mA to produce 700mA at 12 volts.
It does seem that some USB outlets could provide that current.
73 Alan G4ZFQ