See https://www.rigpix.com/xiegu/xiegu_g90.htm
Operating Manual
G90 top tips: mic gain 12 or 13, compressor on, I get a lot of comments on my “good audio” from ops but then again all of that is subjective Mark 2M0IIG – https://discord.com/channels/715554730323083274/746443646777294971/1384840608157401139