This is a stupid question, but I can't find it in a manual or by trial and error. A ways back in another thread, someone mentioned hitting the attenuator button on a DX-398 to help with severe, 40kHz+-wide station splatter. I'd love to... but where the heck is the attenuator button on a DX-398? I've tried just about every key, nothing, and I can't see my keypad and dial labels, so I can't just look at the thing. Help, somebody with eyes and a clue?