Radiomarelli    CALIPSO     II        


                                      (  12 type set  )

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Chassis type






Frequency range

Medium waves - Long waves


6A7_ 78_75_41_ 80

Intermediate frequency

485 KHz 

Power supply

110 / 160 / 220 V. a.c.

Measure of the body

51 cm wide; 50 cm tall; 36 cm deep.

Overall dimensions

66,5 cm wide; 99,5 cm tall; 40 cm deep.


Kg. 30 circa 


Calipso II differs from the first version for the tuning dial and it can receive two bands, medium and long waves.

Electric diagram and chassis are not similar to the one of Calipso (first version).

Calipso II is a superheterodyne set also but, compared to the first version, the diagram is more evolved. In this radio was used an indirect 6,3 V heater new tube series and the frequency converter is a multi-grid tube, 6A7.

Diagram and chassis of this radio are same to the ones of Damayante model.

The turntable, which works only 78 laps, has the pick-up with the interchangeable pin system, like a gramophone. The electric motor is a Paillard mod. 4000 (Swiss made) while arm and platen were manufactured by Radiomarelli.

The upper left knob operates the power switch / volume control while the right one is for the tuning. The lower left knob (spherical in shape) has two axial positions and is used to remove the sound without switching off the radio. The right one spherical knob has two axial positions also and operates the switch band, by pulling toward yourself you select the long waves band.

Under the dial you can see a pointer tuning meter which works in series to the anodic circuit of the IF amplifier tube.

Exists a doubt about the muting switch operating of this radio, so I put in the bottom of the page three electrical diagrams which I found in three different books of the age:

In the first diagram there is a mistake and the switch is missing. In the Damayante diagram the switch is located in series to the sound speaker coil. In the third diagram the switch is located in series to the LF signal, between the 75 and 41 tubes.

The published radio, and other two radios that Iíve seen, corresponds at the second diagram, the one of Damayante.






              First diagram                        Damayante diagram                     Third diagram