Model: "Kit M2" R-250M2 (R250M2) ("P-250M2")
Antique radios, Old Time Radios
"Kit M2" R-250M2 (R250M2) ("P-250M2")
Country:
Soviet Union
Manufacturer/Brand:
Industrial Union Proton; Charkov (Ukraine)
Year: 1966 – 1981
Type:
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.Communication Receiver (also Amateur)
Mod.-ID = 82982
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Schematics etc.: 5 (for
members)
Principle
Double 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. Superhet, double/triple conversion
Wave bands
Bitte geben Sie die Wellenbänder an, falls Sie mehr wissen.Wave Bands given in the notes.
Power type and voltage
Line 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!Line / Storage batteries (perhaps also batteries) / 127/220/12 Volt
Loudspeaker/pwr.out
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.- For headphones or amp.
from Radiomuseum.org
Model: "Kit M2" R-250M2 (R250M2) ("P-250M2")
Material
Metal 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.Metal case
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.
This model was suggested by Zenonas Langaitis.
Kaunas Lithuania
R-250 supply block
Kaunas Lithuania
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"Kit M2" R-250M2 (R250M2) ("P-250M2") (Industrial Union Proton; Charkov (Ukraine))
