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Desktop Shortwave receiver
Marine Shortwave receiver IMR54
Desktop Shortwave receiver

General

HAM bands ? ? ?
Freq. stability ? ? Below 10 MHz: 50 Hz/MHz Above 10 MHz: 20 Hz/MHz Both after 30 minutes warm-up
Tuning steps ? ? ?

Receiver

RX-range 40 kHz - 31 MHz in 10 bands 15 kHz - 31 MHz in 10 bands 0.2-0.42 / 1.1-30 MHz in 5 bands
Modulations AM   CW   AM   CW   AM   CW  
Sensitivity 3 µV above 1500 kHz
8 µV for lower frequencies
15-160 kHz: 4-20 µV (10 dB S/N)
160-1500 kHz: 6-10 µV (10 dB S/N)
1.5-4 MHz: 1.5-3 µV (10 dB S/N)
4-10 MHz: 2-6 µV (10 dB S/N)
10-31 MHz: 2-10 µV (10 dB S/N)
AM: 5 µV
CM 1-2 µV
Selectivity 2 kHz @ -2.5 dB
5 kHz @ -35 dB
Wide, Intermediate, Narrow and Very narrow settings.
500 Hz ... 25 kHz
1.5 / 3.0 / 6.0 / 12.0 kHz selectable (-6 dB)
Filters ? ? 500 Hz switchable crystal filter
Receiver system Superheterodyne Double conversion superheterodyne Superheterodyne
IF-freqs. 450 kHz ? 450 kHz
Image rejection ? ? ?
Audio output ? 1 W 1 W

Transmitter

TX-range - - -
Modulations - - -
RF-output ? ? ?

Connections

Antenna - - -
Impedance 50Ω 72Ω 70/80Ω
Other - - -

Electrical

Power req. Mains Mains (110-250 V AC) Mains (100-125 or 200-250 V AC) or external PSU
Current RX ? 82 W 80 W
TX - - -

Physical

Manufactured Between 194x and 194x in Great Britain Between 1952 and 195x in Great Britain Between 1959 and 196x in Great Britain
Dimensions 520 × 305 × 342 mm
(20.47 × 12.01 × 13.46 in)
747 × 385 × 451 mm
(29.41 × 15.16 × 17.76 in)
?
Weight 22.90 kg (50.5 lbs) 60.90 kg (134.4 lbs) ?
Form factor Base Station Base Station Base Station

Other features

Memories ? ? ?
Usage Amateur / Ham radio operators Marine / Navy Military communication
Features ? Automatic volume control ?
Accessories ? ? ?
MPN EDDYSTONE-000358/I EDDYSTONE-000700 EDDYSTONE-000730/7