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Monitoring Scope
External Speaker
Marine Shortwave receiver IMR54

General

HAM bands 80m  60m  40m  30m (WARC)  20m  17m (WARC)  15m  12m (WARC)  11m (CB)  6m  10m  ? ?
Freq. stability ? ? ?
Tuning steps ? ? ?

Receiver

RX-range 3.5-54 MHz - 15 kHz - 31 MHz in 10 bands
Modulations All mode   - AM   CW  
Sensitivity 60 mV / 1/4" deflection (horizontal and vertical) ? 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)
Selectivity ? ? Wide, Intermediate, Narrow and Very narrow settings.
500 Hz ... 25 kHz
Filters ? ? ?
Receiver system ? ? Double conversion superheterodyne
IF-freqs. ? ? ?
Image rejection ? ? ?
Audio output ? 40W max. - 200Hz ~ 6.6kHz 1 W

Transmitter

TX-range ? - -
Modulations All mode   - -
RF-output ? ? ?

Connections

Antenna SO-239 - -
Impedance 50Ω ? 72Ω
Other - - -

Electrical

Power req. Mains (120-240 V AC) ? Mains (110-250 V AC)
Current RX 25 W - 82 W
TX ? - -

Physical

Manufactured Between 1974 and 197x in USA Between 201x and 20xx in Japan Between 1952 and 195x in Great Britain
Dimensions ? 200 × 120 × 232 mm
(7.87 × 4.72 × 9.13 in)
747 × 385 × 451 mm
(29.41 × 15.16 × 17.76 in)
Weight ? 1.05 kg (2.3 lbs) 60.90 kg (134.4 lbs)
Form factor Base Station Base Station Base Station

Other features

Memories ? ? ?
Usage Amateur / Ham radio operators Amateur / Ham radio operators Marine / Navy
Features ? ? Automatic volume control
Accessories ? ? ?
MPN HEATHKIT-SB-000614 ICOM-SP-000037 EDDYSTONE-000700