has a frame antennae around the top of the hull and a telescopic mast on the right side of the front of personnel compartment's roof. BTR-60R-140BM – BTR-60PB converted into a SW signals vehicle similar to the BTR-60R-137B. It is equipped with three radio sets: R-140, R-405, R-123. BTR-60R-156BTR – BTR-60PB converted into a HF signals vehicle used on the operational level. It is equipped with the R-156 HF radio and two other radio sets: R-405 and R-123. BTR-60R-409BM – BTR-60PB converted into a radio relay station similar to the BTR-60R-419BR equipped with the R-409 radio set. BTR-60R-419BR – BTR-60PB converted into a low-frequency radio relay station similar to the BTR-60R-409BM. BTR-60E-351BR – BTR-60PB converted into a battery charger vehicle used by signals units. It is equipped with a 20 kW generator. The vehicle has an extra seat and carries fuel inside for the generator. BTR-60P-238BT – BTR-60PB converted into a switchboard vehicle (kompleksnaya apparatnaya telegrafnoj svyazi). BTR-60P-239BT – BTR-60PB converted into a switchboard vehicle (kompleksnaya apparatnaya telegrafnoj svyazi). BTR-60P-240BT – BTR-60PB converted into a switchboard vehicle (kompleksnaya apparatnaya telefonnoj svyazi). BTR-60P-241BT – BTR-60PB converted into a switchboard vehicle (kompleksnaya apparatnaya telegrafnoj svyazi). BTR-60MS – BTR-60PB converted into a communications Vehicle fitted with a "High Ball" antennae mount. BTR-60MBP (MBP stands for mashina boyevogo posta) – BTR-60PB converted into a base security vehicle for Strategic Rocket units. The original turret has been replaced by a new type armed with NSVT 12.7 mm heavy machine gun and equipped with an improved 1PN22M1 sight, loudspeakers, OU-3GA-2 IR search lights and additional TNPO-170 periscopes. The vehicle is also equipped with a stowage box on the right side of the hull. Behind the right side troop compartment roof hatch, there's a small bolted on plate. BTR-70 Russia BTR-60PBM – BTR-60PB modernization fitted with a new engine in a new, bigger engine compartment similar to the one in the BTR-80. The exhaust pipes are also similar, if not identical, to the ones in BTR-80s. The right side of the hull has been altered: a side door with a small hand rail for the troop compartment was added, four out of five handrails were removed (the exception being the lower front one), the firing ports were replaced with one located next to the gunner's station and a stowage box was added next to the engine compartment. The modernization is done by the Arzamas Engineering Plant. MWS