The versions differed externally in the type of antennae (frames) used. As a whole the type had a very different configuration from that of the AMR 35: in the raised front and superstructure the engine was placed in the front, the driver was seated to the right with the vehicle commander to his left; and behind was a large compartment for two radio operators with a high double hatch in the back. The Artillery used only a single operator in exchange for more supplies. The unloaded weight was considerably higher than predicted, at 5950 kilogrammes. Fully loaded, including about 0.8 tonnes of radio equipment, weight increased to about 7.5 tonnes, hundred kilogrammes higher than the acceptable suspension maximum indicated by Renault. Despite the fitting of a second fuel tank, the range decreased to 150 kilometres and the reliability of the type was low with much breakage of the road wheel axles.