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The Eddystone 640 was designed primarily for amateur communication purposes and covers 1.7-30 MHz without gaps. An external S-meter can be attached to the rear.

General characteristics

HAM bands
?
Frequency stability
?
Tuning steps
?

Receiver

RX-range
1.7-4.5 / 4.5-12.6 / 12.6-32 MHz
Modulations
AM   CW  
Sensitivity
≤ 2 µV
Selectivity
10 kHz @ -25 dB without crystal filter
400 Hz with crystal filter
Filters
Optional 400 Hz crystal filter
Receiver system
Double conversion superheterodyne
IF-frequencies
1st: 1600 kHz
2nd: 450 kz
Image rejection
45 / 60 / 90 dB
Audio output
3 W

Connections

Antenna
Clamps / screws
Impedance
400Ω
Other
-

Electrical

Power requirements
Mains (110 / 220 V AC)
Current drain RX
65 W
TX
-

Physical

Manufactured
Between 1947 and 194x in Great Britain
Dimensions (w×h×d)
425 × 222 × 254 mm (16.73 × 8.74 × 10.00 in)
Weight
14.97 kg (33.0 lbs)
Form factor
Base Station

Other features

Memories
?
Usage
Amateur / Ham radio operators
Features + options
BFO
Noise limiter
AVC
Standby switch
Accessories
?
MPN
EDDYSTONE-000640

Manuals, diagrams and brochures

Eddystone 640 Service Manual submitted by RigReference
Eddystone 640 Redrawn Circuits submitted by RigReference
 
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