RA-17; Racal Engineering (ID = 479039) Commercial Re RA-17; Racal Engineering (ID = 2511415) Commercial Re
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RA-17; Racal Engineering (ID = 479039) Commercial Re
Racal Engineering: RA-17 [Commercial Re] ID = 479039 903x700
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For model RA-17, Racal Engineering (Racal Instruments) Ltd., Bracknell:
to see in Bletchley Park. It was originally installed on the RMS 'Queen Mary'
Country:  Great Britain (UK)
Manufacturer / Brand:  Racal Engineering (Racal Instruments) Ltd., Bracknell
Year: 1954 Category: Commercial Receiver (may include amateur bands)
Valves / Tubes 23: EF91 E180F 6F33 EK90 EF93 EB91 GZ33
Main principle Wadley-Loop principle (including dual superhet); ZF/IF 40000/2500 kHz
Wave bands Broadcast plus more than 2 Short Wave bands.
Power type and voltage Alternating Current supply (AC) / 100-125 / 200-250 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2.5 inch = 6.4 cm
Power out 0.05 W (unknown quality)
from Model: RA-17 - Racal Engineering Racal
Material Metal case
Shape Rack
Dimensions (WHD) 482 x 267 x 510 mm / 19 x 10.5 x 20.1 inch
Notes General coverage receiver 980 - 30000 kHz, AM, SSB (BFO).
IF bandwidths 0,1 / 0,3 / 0,75 / 1,2 / 3 / 8 kHz (-6dB), linear analog readout 1 kHz. 100 kHz calibrator.
First receiver using the "Wadley loop drift cancelling technique", development began 1955, prototypes produced 1956.
Most tubes used more then once, rectifier tube changed from GZ33 to GZ34 from S/N 1460.
Net weight (2.2 lb = 1 kg) 30.5 kg / 67 lb 2.9 oz (67.181 lb)
Source of data -- Original-techn. papers.
Mentioned in Racal Handbook, Rinus Jansen

Model page created by Martin Bösch. See "Data change" for further contributors.

All listed radios etc. from Racal Engineering (Racal Instruments) Ltd., Bracknell
Here you find 103 models, 47 with images and 11 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.


Forum contributions about this model
Racal Engineering: RA-17
Threads: 2 | Posts: 2
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racal: RA-17 (RA17); Photo
Heribert Jung
  1 Here is the info to RA-17 presented in Bletchley Park. See Attachment.


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racal: Racal RA-17 / RA-17 L Röhrenbestückung / Tube Layout
Martin Bösch
  1 Der Allwellenempfänger Racal RA17 wurde in zahlreichen verschiedenen Versionen gefertigt. Teils unterscheidet sich die Röhrenbestückung etwas, nähere Informationen sind zum Teil auf den einzelnen Modellblättern zu finden.

Röhrenpositionen / tube positions


Racal Engineering: RA-17
End of forum contributions about this model