Wireless Sender No. 57 440 (S440)

Country:  Great Britain (UK)
Manufacturer / Brand:  Eddystone, Birmingham
alternative name
Stratton & Co.Ltd.; Birmingham
Year: 1942–1945 Category: Commercial Transmitter (TX not Transceiver)
Valves / Tubes 6: ARP37 CV18 CV18 CV18 ECC31 ECC31
Wave bands Wave Bands given in the notes.
Power type and voltage Storage and/or dry batteries / 12 Volt
Loudspeaker - - No sound reproduction output.
Power out
from Model: Wireless Sender No. 57 440 - Eddystone, Birmingham
Material Metal case
Shape Tablemodel, with any shape - general.
Notes VHF transmitter, used in VHF duplex communications systems. Single crystal controlled channel within 50 - 100 MHz range. Output 7 - 10 Watts.
Variants: without suffix letter: 50 - 100 MHZ range
440B: range 85 - 95 MHz
440C: range 65 - 85 MHZ
RAF variant / no suffix letter: - 120 MHz
This set has been used as transmitter of Royal Army Wireless Station No. 57. Modified sets often used by ham for VHF 6m - communications in post-war years.
Mentioned in Eddystone User Group: Quick Reference Guide

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

All listed radios etc. from Eddystone, Birmingham
Here you find 235 models, 88 with images and 34 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.