On Tuesday, September 26, 2017 at 7:47:52 PM UTC-4, wrote:
Perhaps this?
Not sure if it emits noise for the vhf.

https://powerwerx.com/usbbuddy-power...device-charger

These things all have a 3.7V lithium ion battery inside, and a "switching" circuit to convert that to 5V for the output. Thus they are all potential noise makers. Put the output cable 2 or 3 times through a ferrite ring if you notice too much noise in the radio. Since the pack has no other connections, that cable is the main "antenna" for the noise, so that should fix it.