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Desktop Shortwave receiver
Mobile dual-band transceiver
Marine Shortwave receiver IMR54

General

HAM bands ? 2m  70cm  ?
Freq. stability 10 ppm per °C (2 ppm per °C at 2182 kHz) ± 5 p.p.m. ?
Tuning steps ? 12.5 / 20 / 25 kHz ?

Receiver

RX-range 0.3-0.55 / 1.5-30 MHz in 5 bands + 2182 kHz 118-174 / 220-260 / 350-390 / 400-490 MHz 15 kHz - 31 MHz in 10 bands
Modulations AM   CW   SSB   FM   N-FM   AM   CW  
Sensitivity 300-550 kHz
15 µV for 15 dB S/N

1.5-30 MHz
5 µV for 15 dB S/N
FM: 0.18 µV
N-FM: 0.22 µV
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 7 kHz (-6 dB)
30 kHz (-40 dB)
? Wide, Intermediate, Narrow and Very narrow settings.
500 Hz ... 25 kHz
Filters ? ? ?
Receiver system Single conversion ? Double conversion superheterodyne
IF-freqs. 720 kHz ? ?
Image rejection 85 dB (65 dB for 0.3-0.55 MHz) ? ?
Audio output 1 W @ 10% THD >2W@5% 1 W

Transmitter

TX-range - 136-174 / 400-480 MHz -
Modulations - FM   N-FM   -
RF-output ? VHF: 50/25/10/5 W, UHF: 35/25/10/5 W ?

Connections

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

Electrical

Power req. 12 or 24V DC 13.8V DC Mains (110-250 V AC)
Current RX Max 250 mA @ 13.8 VDC 0.8 A 82 W
TX - 10 A -

Physical

Manufactured Between 1970 and 197x in Great Britain Between 2013 and 20xx in Taiwan Between 1952 and 195x in Great Britain
Dimensions 317 × 162 × 203 mm
(12.48 × 6.38 × 7.99 in)
140 × 40 × 212 mm
(5.51 × 1.57 × 8.35 in)
747 × 385 × 451 mm
(29.41 × 15.16 × 17.76 in)
Weight 6.30 kg (13.9 lbs) ? 60.90 kg (134.4 lbs)
Form factor Base Station Mobile Base Station

Other features

Memories ? 758 channels in 1 bank(s) ?
Usage Marine / Navy Amateur / Ham radio operators Marine / Navy
Features ? ? Automatic volume control
Accessories ? ? ?
MPN EDDYSTONE-EC000010A2 ADI-AM-000580 EDDYSTONE-000700