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Marine Shortwave receiver IMR54
Desktop Shortwave receiver

General

HAM bands ? ?
Freq. stability ? ?
Tuning steps ? ?

Receiver

RX-range 15 kHz - 31 MHz in 10 bands 1.7-4.5 / 4.5-12.6 / 12.6-32 MHz
Modulations AM   CW   AM   CW  
Sensitivity 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)
≤ 2 µV
Selectivity Wide, Intermediate, Narrow and Very narrow settings.
500 Hz ... 25 kHz
10 kHz @ -25 dB without crystal filter
400 Hz with crystal filter
Filters ? Optional 400 Hz crystal filter
Receiver system Double conversion superheterodyne Double conversion superheterodyne
IF-freqs. ? 1st: 1600 kHz
2nd: 450 kz
Image rejection ? 45 / 60 / 90 dB
Audio output 1 W 3 W

Transmitter

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

Connections

Antenna - Clamps / screws
Impedance 72Ω 400Ω
Other - -

Electrical

Power req. Mains (110-250 V AC) Mains (110 / 220 V AC)
Current RX 82 W 65 W
TX - -

Physical

Manufactured Between 1952 and 195x in Great Britain Between 1947 and 194x in Great Britain
Dimensions 747 × 385 × 451 mm
(29.41 × 15.16 × 17.76 in)
425 × 222 × 254 mm
(16.73 × 8.74 × 10.00 in)
Weight 60.90 kg (134.4 lbs) 14.97 kg (33.0 lbs)
Form factor Base Station Base Station

Other features

Memories ? ?
Usage Marine / Navy Amateur / Ham radio operators
Features Automatic volume control BFO
Noise limiter
AVC
Standby switch
Accessories ? ?
MPN EDDYSTONE-000700 EDDYSTONE-000640