Others can correct me if I am wrong, but I don't think it uses anywhere near 3 amps.
> My BY jumper will mostly be used in the shack. I have a 'wall
> wart" whose output is rated at 12V and 3.5A. Someone said the
> amperage might not be enough to power the transmitter. I can't
> find any information, so I am asking this group. Can I use it to
> both receive and transmit?