Great info Billy
JS sounds are some of the best in the business, If the PM-4 would have come out befor I upgraded to the Minaska I would be using it as the call I had befor was a regular PM with an Azdern remote conversion (way too complicated) but it called dogs.

The PM speaker always sounded a little tinny to me so I made a camo cover for mine that muted the vibration some folks just wrap it with duct tape or sport tape and spray paint it.
AWS