vehicle with different radios and a collapsible AZI frame antenna. Former Czechoslovakia OT-62 TOPAS (OT-62 stands for Obrněný Transportér vzor 62 – "Armored Personnel Carrier model 62") ("TOPAS" stands for Transportér Obrněný PÁSový – "Tracked Armored Personnel Carrier") – A series of BTR-50 variants developed jointly by Poland and Czechoslovakia. They are similar to the BTR-50PK but have hatches in the hull sides, a more powerful PV-6 engine giving 300 hp (224 kW) and two projecting bays at the front of the superstructure instead of one like similar looking BTR-50PU (however the bays are different from one another in terms of shape). Former East Germany SPW 50P (Schützenpanzerwagen) – Nationale Volksarmee (NVA) designation for the Soviet-produced BTR-50P. SPW 50PK – NVA designation for the Soviet-produced BTR-50PK. The NVA had a number of locally modified SPWs in service SPW 50PK(Akl) (Aufklärung) – Version for reconnaissance units. SPW 50PK(D) SPW 50PK(B) (Bergefahrzeug) – A BTR-50PK converted into a recovery vehicle. It weighed 14 tonnes and had a crew of two (commander and driver), with seats for four auxiliary personnel. During rescue operations the vehicle can accommodate up to eight personnel. The SPW-50PK(B) is fitted with R-123M and R-124 radios, a rear-mounted coupling for towing, a tow hook, two extra towing cables, two special quick-release shackles, standard shackles and snap hooks, a searchlight, two lifebelts, life jackets, a set of tools, fire extinguishers and four fenders. SPW 50PK(BBS) (Batteriebeobachtungsstelle) – Observation vehicle for air defense units. SPW 50PK(KM) (Kernmine) – SPW 50PK, equipped with a tool set for combat engineers PGS-5 (Pioniergerätesatz) to locate and retrieve mines. SPW 50PK(LA) (Luftabwehr) – Command vehicle for air defense units. SPW 50PK(MRF) (Minenräumfahrzeug), also known as Minenräumfahrzeug 50PK (SPW) – A mine-clearing vehicle, equipped with two containers for mine-clearing charges WLWD of Polish design. The containers were loaded onto the roof of the troop compartment via two ramps, welded on the engine deck. SPW 50PK(Pi) – Command vehicle for combat engineer (Pioniere) units. SPW 50PK(S) – Command and staff vehicle. SPW 50PK(UF) (Unterwasserfahrt) – SPW 50PK, equipped with a tool set for combat engineers PGS-4 (Pioniergerätesatz) to prepare river crossings. SPW 50PU – NVA designation for the BTR-50PU. SPW 50PU(A) – Locally modified version for the commanders of the divisional artillery. Egypt BTR-50PK – Fitted with a glassed cabin on top of the standard superstructure. Finland BTR-50YVI (yhtymän viestijärjestelmä) – BTR-50PK converted into a command and