Power Supply ..is 1A enough?

Is 1A enough to run Reach and 3dr radio?

Toying with the idea of using a PowerBoost from Adafruit .

I think that is enough. I use 10000mAh. But not adafruit…

Reach is rated to max 500mA consumption https://docs.emlid.com/reach/electrical-specs/

Not sure what 3d radio use…

@dicky what are you using?

Just a powerbank. I think we need only 5V and about mAh, bigger mAh longer time we get.