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R 408

R 408; Redifon Ltd.; London (ID = 268326) Commercial Re R 408; Redifon Ltd.; London (ID = 268532) Commercial Re
R 408; Redifon Ltd.; London (ID = 268533) Commercial Re
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R 408; Redifon Ltd.; London (ID = 268326) Commercial Re
Redifon Ltd.; London: R 408 [Commercial Re] ID = 268326 933x700
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For model R 408, Redifon Ltd.; London:
Redifon R 408
Country:  Great Britain (UK)
Manufacturer / Brand:  Redifon Ltd.; London
Year: 1968 ? Category: Commercial Receiver (may include amateur bands)
Semiconductors (the count is only for transistors) Semiconductors present.
Main principle Superhet, double/triple conversion; ZF/IF 80 kHz; none
Wave bands Broadcast, Long Wave and more than two Short Wave bands.
Power type and voltage Line / Storage batteries (perhaps also batteries) / 100-125; 200-250 / 24 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 8 cm = 3.1 inch
Power out 1.4 W (unknown quality)
from Model: R 408 - Redifon Ltd.; London
Material Metal case
Shape Boatanchor (heavy military or commercial set).
Dimensions (WHD) 420 x 220 x 500 mm / 16.5 x 8.7 x 19.7 inch
Notes Communications receiver for maritime use, coverage 13 - 28000 kHz, AM, USB/LSB;
Single conversion below 650 kHz, depending on frequency, first IF is 470 kHz, 1.5 Mhz or 4.5 Mhz, second IF 80 kHz. Internal crystal calibrator, analog film tuning scale.
This receiver was also used in in ship wireless stations equipped by German maritime telecommunications company Hagenuk as Receiver Hagenuk E 408R.
Net weight (2.2 lb = 1 kg) 25.5 kg / 56 lb 2.7 oz (56.167 lb)
Source of data Shortwave Receivers - Past & Present (3rd ed.)
Mentioned in -- Original-techn. papers.

Model page created by Lars-G. Lundelin. See "Data change" for further contributors.

All listed radios etc. from Redifon Ltd.; London
Here you find 8 models, 6 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.