Exchange Old PW for New MultiMax or PW Plus
The Mac Group no longer services the PW Classic. I just learned that they offer an upgrade to a new PW MultiMax for $199 plus your PW Classic receiver or transmitter. Or you can get the Plus Kit for $218 plus your PW Classic Transmitter & Recieiver pair.
They even have an upgrade offer for the L508 meter to the L558.
America — she's a good country.