Hi Barry W2UP, iirc it's quite simple: The harder you press it the louder you are on Bouvet. But don't press it on their TX QRG as there are always several police men with a bigger knob than you have. 73 Rob DM4AO on Tuesday, January 31, 2023 at 16:11 you wrote: > Could someone explain how the tuning knob works again? > Barry W2UP