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Desktop Shortwave receiver
Desktop Speaker
Marine Shortwave receiver IMR54

General

HAM bands 160m  80m  60m  40m  30m (WARC)  20m  17m (WARC)  15m  12m (WARC)  11m (CB)  10m  ? ?
Freq. stability ? ? ?
Tuning steps Continuous ? ?

Receiver

RX-range 0.3-30 MHz in 9 bands - 15 kHz - 31 MHz in 10 bands
Modulations AM   CW   USB   LSB   - AM   CW  
Sensitivity < 3 µV (15 dB S/N @ 3 kHz bandwidth) ? 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 Continuously variable between 1.3-6 kHz (-6 dB) ? Wide, Intermediate, Narrow and Very narrow settings.
500 Hz ... 25 kHz
Filters ? ? ?
Receiver system Single conversion below 1.5 MHz / Double conversion above 1.5 MHz ? Double conversion superheterodyne
IF-freqs. 1st: 1.25-1.45 MHz
2nd: 100 kHz
? ?
Image rejection 0.3-1.5 MHz: >50 dB / 1.5-10 MHz: >70 dB / 10-30 MHz: >50 dB ? ?
Audio output 2.5 W ? 1 W

Transmitter

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

Connections

Antenna SO-239 - -
Impedance 75Ω ? 72Ω
Other - - -

Electrical

Power req. Mains ? Mains (110-250 V AC)
Current RX 85 VA max - 82 W
TX - - -

Physical

Manufactured Between 1967 and 1973 in Great Britain Between and Between 1952 and 195x in Great Britain
Dimensions 426 × 222 × 381 mm
(16.77 × 8.74 × 15.00 in)
? 747 × 385 × 451 mm
(29.41 × 15.16 × 17.76 in)
Weight 22.00 kg (48.5 lbs) ? 60.90 kg (134.4 lbs)
Form factor Base Station Base Station Base Station

Other features

Memories 8 channels in 1 bank(s) ? ?
Usage Amateur / Ham radio operators Amateur / Ham radio operators Marine / Navy
Features ? ? Automatic volume control
Accessories ? ? ?
MPN EDDYSTONE-000830/7 DRAKE-000002-CQ EDDYSTONE-000700