Demonstrating the handset on a tough talker transceiver base. Just got the handset only. However, it does still work fine on the tough talker transceiver, just displays the usual loaner message. These phones were usually car mounted phones only. I now have all the Motorola Dynatac car phone models, 2000, 4000, 6000 & 6800, yay ! It has taken a long time to find all of them. Another thing, when I have this 2000 handset on the tough talker, the ringer in the tough talker base is used instead of the handset ringer, and this sounds completely different to the usual Motorola car phone ring tone. Chris.