Please have patience, this is my first time with a boat anchor radio. I have a Yaesu FT-902DM. Following the Instruction manual for Pre-tuning - Page 14 Everything seems to go as expected until I get to, Pre-Tuning on Item 1 - Adjusting the Preselect control, does not seem to have any effect on receiver noise. on Item 2 - Rotating the CARR control does not have any effect on the meter reading. Can anyone point as to what the problem might be?