03-24-2020, 05:11 PM
You can use an untapped 2 meg pot, just do not connect the wire going to the tap at present. It only affects the tone at low volumes. The radio will work OK without it. If you tried using a 1 meg, with a 1 meg resistor, you would not have the full range of volume control, and end up stuck with half volume to full volume, not what you want.