My KX3 volume is too low. When I crank up the volume to the max level, it is sometimes barely loud enough to hear. Here’s what’s been suggested (and I’m working on testing).

• In the AGC menu adjust AGC THR (AGC threshold).
• Tap the TUNE button.
• Turn off NR.
• Check RF gain. (Did that. It is at max = 0. Lower levels are negative.)
• Turn preamp on.
• Make sure you don’t have an antenna problem.
• Swap between headphones and speaker. (I’ve been using headphones. The speaker will show me whether it is a problem with headphone sensitivity.)