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Country:  Great Britain (UK)
Manufacturer / Brand:  Racal Engineering (Racal Instruments) Ltd., Bracknell
Year: 1965 ?? Category: Miscellaneous (Other, Various) - see notes
Valves / Tubes 2: 6AU6 6AS6
schematic requested
Main principle RF Converter/Adapter (not voltage converter)
Wave bands - without
Loudspeaker - - No sound reproduction output.
Power out
from Model: RA-73 - Racal Engineering Racal
Material Metal case
Notes IF Converter to connect receivers with different intermediate frequencies:
RA-73C: converts 100 kHz IF to 455 kHz IF: used to connect e.g. an RA-17 with a SSB demodulator or RTTY converter of a different maker.
RA-73D: converts 455 kHz IF to 100 kHz IF: used to connect a receiver of a different maker to a Racal ISB converter operating on 100 kHz IF.
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 105 models, 50 with images and 11 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.