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Pre-Selection & Protection Unit MA-197B

Pre-Selection & Protection Unit MA-197B; Racal Engineering (ID = 2633745) Military
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Pre-Selection & Protection Unit MA-197B; Racal Engineering (ID = 2633745) Military
Racal Engineering: Pre-Selection & Protection Unit MA-197B [Military] ID = 2633745 750x453
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For model Pre-Selection & Protection Unit MA-197B, Racal Engineering (Racal Instruments) Ltd., Bracknell:
From: 'Electronic Engineering' volume 37, year 1965.
Country:  Great Britain (UK)
Manufacturer / Brand:  Racal Engineering (Racal Instruments) Ltd., Bracknell
Year: 1965 ?? Category: Military Equipment (not Re, Tr or RXT)
Main principle RF-Circuit or wave trap (separate, can also be an antenna with amp.)
Wave bands Short Wave (SW only)
Power type and voltage Alternating Current supply (AC) / 100-125; 200-250 Volt
Loudspeaker - - No sound reproduction output.
Power out
from Model: Pre-Selection & Protection Unit MA-197B - Racal Engineering Racal
Material Metal case
Shape Rack
Dimensions (WHD) 483 x 178 x 480 mm / 19 x 7 x 18.9 inch
Notes Preselector and Front End - Protector.
For Preselection and Protection of receiver front-ends against HF up to 40V.
Operational in Segments 2-4 / 4-8 / 8-16 / 16-24 MHz.
Variants: MA-197A, MA-197B-1 (RAF contract), MA-197B-3 for Dutch Navy; MA-197C modified for use with RA-17/117 and RA-217/1217.
Net weight (2.2 lb = 1 kg) 20.5 kg / 45 lb 2.5 oz (45.154 lb)
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 107 models, 54 with images and 12 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.