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Communications Receiver 730/4 (S730/4)

Communications Receiver 730/4 ; Eddystone, (ID = 2605208) Commercial Re
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Communications Receiver 730/4 ; Eddystone, (ID = 2605208) Commercial Re
Eddystone,: Communications Receiver 730/4 [Commercial Re] ID = 2605208 1400x759
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For model Communications Receiver 730/4 (S730/4), Eddystone, Birmingham
Country:  Great Britain (UK)
Manufacturer / Brand:  Eddystone, Birmingham
alternative name
Stratton & Co.Ltd.; Birmingham
Year: 1956 Category: Commercial Receiver (may include amateur bands)
Valves / Tubes 15: 6BA6 6BA6 6BE6 6AM6 or 8D3 6BA6 6BA6 6AL5 12AU7 6AL5 6AM6 or 8D3 6AU6 6BA6 5Z4G VR150-30 6AM5 or 7D9
Main principle Superhet with RF-stage; ZF/IF 450 kHz
Wave bands Broadcast and Short Wave (SW).
Power type and voltage Alternating Current supply (AC) / 100-125; 200-250 Volt
Loudspeaker - This model requires external speaker(s).
Power out
from Model: Communications Receiver 730/4 - Eddystone, Birmingham
Material Metal case
Shape Rack

A communications receiver mainly sold to the UK Ministry of Defence. It has provision for use with external power sources in the absence of mains supply. The set is a single conversion superheterodyne with an IF of 450kHz using 15 valves, and has two RF stages of amplification, two IF stages of amplification, stabilised HT for VFO and BFO, audio filter, crystal IF filter, crystal calibrator and a noise limiter. The set tunes from 480kHz
to 30MHz in 5 bands :

Band 1 12.3-30.00MHz
Band 2 5.3-12.5MHz
Band 3 2.5-5.7MHz
Band 4 1.11-2.5MHz
Band 5 480-1100kHz

Price in first year of sale 230.00 £
Literature/Schematics (1) - - Manufacturers Literature (

Model page created by Hans-Georg Wachter. 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.