Model: "Kit M2" R-250M2 (R250M2) ("P-250M2")



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"Kit M2" R-250M2 (R250M2) ("P-250M2")
Country: Soviet Union Manufacturer/Brand: Industrial Union Proton; Charkov (Ukraine)
Year: 1966 – 1981 Type: Communication Receiver (also Amateur)Receiver used for civil commercial purposes, e.g. point-to-point maritime or aviation communications, used or second hand sets often used by radio amateurs. Often used also for military communications, partly special variants to military specifications. Mod.-ID = 82982 previous | Result List | next | New search for Radios etc. Schematics etc.: 5 (for members) Principle Superhet, double/triple conversionDouble or triple conversion superhet.
Doppelsuper oder (manchmal nur teilweise) Dreifachsuperhet.
Der Apparat verfügt über zwei Oszillatorsysteme auf zwei verschiedenen Zwischenfrequenzen (ZF). Dieses Prinzip gibt es bei Rundfunkempfängern aus Preisgründen sehr selten, doch bei kommerziellen und Amateurgeräten besserer Qualität ist das Verfahren öfters anzutreffen. Sinngemäss gilt das auch für Dreifachsuper und Kombinationen davon.
Wave bands Wave Bands in notes or not known yet.Bitte geben Sie die Wellenbänder an, falls Sie mehr wissen.
Power type and voltage Line / Storage Batteries / 127/220/12 VoltLine supply as well as storage battery supply - often battery can be loaded by the line power. Take the battery out because it can leak!
Alimentation secteur et alimentation de batterie possible.
Netz- und Akku-Speisung - meist mit eingeb. Ladegerät.
Das Gerät - meist ein Reiseapparat - lässt sich aus dem Netz oder aus Akkus speisen. Solche Akkus können heute auslaufen - darum entfernen!
Loudspeaker/pwr.out - This set has no built-in loudspeaker (separate or not necessary).This set has no built-in loudspeaker. It requires a separate loudspeaker or headset - or the set has no speaker output (not a radio).
Cet appareil n`a pas d`haut-parleur.
Das Gerät verfügt nicht über einen eingebauten Lautsprecher - entweder weil er nicht nötig ist (Gerät hat keine Tonwiedergabe) oder weil er separat zu stellen ist - bzw. das Gerät ist für Kopfhörerbetrieb.
www.radiomuseum.org Model: "Kit M2" R-250M2 (R250M2) ("P-250M2") Material Metal caseMetal case.
Caisse en métal.
Gerät, dessen Gehäuse aus Metall gefertigt ist. Es kann sich um verschiedenartige Metalle und Oberflächenbearbeitungen handeln. Ist es hingegen nur ein Chassis, so erhält das Gerät eine andere Bezeichnung.
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 660 x 472 x 445 mm / 26 x 18.6 x 17.5 inch
Valves / Tubes 20: 6k4p     (more for members)
Notes Successor of R-250M. 1.5-25.5 MHz in 12 ranges (turret tuner), with optional extension kit four additional ranges up to 33.5 MHz, AM/SSB/CW, optical projection tuning scale, motor driven AFC. 1st IF 1500-3500 kHz, 2nd IF 215 kHz. Variable IF bandwith from 1 to 14 kHz, LF filters for 0.3/2.5/5/8 kHz. Needs external power supply (WHD 305 x 220 x 250 mm, 12 Kg; DC 160 Volts, AC 6.3 Volts), or special 12 Volts DC/DC power transverter for mobile use.

R-250, R-250M and R-250M2 where the most prominent and remarkable Russian short wave receivers. The receiver line produced and modernised from 1948 until 1981. The designer was Anton Antonovich Saveliev, Yuri Alexandrov (U1SX) and others. The project was started in 1940 and finalished in 1946 - 1949. First named AS-1 and AS-2 (designers initials) The set took the Stalin Premium prize in the early 50's. While working on the design numerous other developments were taken into account, but no examples were actually obtained, so it is basically an original Russian design. AS-2 is an early version of R-250 and identical to it. Only the labels are different. Very few AS sets were produced, so it is a rare thing among the R-250 series radios. The design is very rugged. The set comes in a cabinet with two compartments and is made from Aluminium (Silumin) castings which are used on chassis etc.

All R-250 series produced from 1949 till 1981 largely in Charkov Radio Works (later IU “Proton”) and some in other factories. Name "Kit" - translated "Whale". The receiver was mainly used in soviet and her allied armed forces. Later often found in HAM radio clubstations.
Net weight 95 kg / 3351 oz
Collectors prices 2 Collector prices (for members)
Source of data -- Original-techn. papers.Die Daten stammen aus technischen Unterlagen des Herstellers - aus der Zeit der Herstellung.
Mentioned in V.I. Shapkin, The Red Ears, Moscow 2003
Literature/Schematics LTC William L. Howard, Largo
   
This model was suggested by Zenonas Langaitis.
Kaunas Lithuania R-250 supply block Kaunas Lithuania More pictures  
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"Kit M2" R-250M2 (R250M2) ("P-250M2") (Industrial Union Proton; Charkov (Ukraine))

 
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