The Red Ribbon Army have one in their command room, which is where they are able to keep track of Goku. Theirs can only give a general idea of where the Dragon Balls are, rather than the exact location, unlike Bulma's radar. In the Japanese version, Red also orders Black to have the creators of their radar executed due to it being faulty especially in comparison to Goku's radar (the dub omits this and instead indicates that Red ordered Black make sure that General Blue understands that he is to apprehend the old man, referring to Master Roshi).
Also in the Red Ribbon Army Saga, the Pilaf Gang has a Global Dragon Radar in their flying fortress, but it is destroyed along with the fortress when they are attacked by Colonel Silver and his men. Later, in the King Piccolo Saga, Pilaf's gang has an upgraded version of the Global Dragon Radar in their flying base, which is shaped like a globe in order to minimize ; they use this radar to help King Piccolo and his sons find the Dragon Balls.