On 11/26/2020 4:55 PM, AS wrote:
...I get low voltage warnings on my SN10b fairly early into the flight when keying the radio, a KTR72N.

Uli - Follow the guidance given and track down the voltage drop!
Likely somewhere upstream of BOTH the radio and SN10.
Corroded connector, too thin wire, etc...

Caution: If you go over 15v, you will fry the SN10...