Ducretet R4 (2nd Model)

Ducretet R4 01
Ducretet R4 02
Ducretet R4 03
Ducretet R4 04
Ducretet R4 05
Ducretet R4 06
Ducretet R4 07
Ducretet R4 08
Ducretet R4 09
Ducretet R4 10
Ducretet R4 11
Ducretet R4 12
Ducretet R4 13
Ducretet R4 14
Ducretet R4 15
Ducretet R4 16
Ducretet R4 17
Ducretet R4 18
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Country:                                         France  

Manufacturer / Brand:              Ducretet (-Thomson; avant: Fernand Ducretet et Ernest Roger etc.); Paris

Year:                                                1932

Valves / Tubes                               4: 35, 27, 47, 80   plus voltage regulator tube

Main principle                             TRF with regeneration

Tuned circuits                               2 AM circuit(s)

Wave bands                                    Broadcast (MW) and Long Wave.

Power type and voltage             Alternating Current supply (AC) / 110 Volt

Loudspeaker                                 Electro Magnetic Dynamic LS (moving-coil with field excitation coil)                         

Material                                          Wooden case (Mahogany)

Shape                                                Tablemodel, high profile

Dimensions (WHD)                     280 x 360 x 215 mm

Notes                                                The R4 receiver is available in two versions:

     1st model with BF connection by resistance-capacity
     2nd model with LF connection by transformer

                                                            The detection is done using a triode 27 (instead of the 24 in the 1st model) 

                                                            while the connection between the detector and the final lamp

                                                            is carried out by a LF transformer.

                                                            The receiver has a 0.65 A, 25/75 V regulator. It is equipped with a Thomson type 45 speaker.           

Price in first year of sale           1’750.00 FRF