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Desktop Shortwave Transceiver
Marine Shortwave receiver IMR54
80-10 m Amateur Converter

General

HAM bands ? ? 80m  40m  20m  15m  10m 
Freq. stability less than 100 Hz drift after 10 minutes warmup ? -
Tuning steps ? ? Continuous

Receiver

RX-range 15/20/40 m 15 kHz - 31 MHz in 10 bands 80-10 m
Modulations CW   SSB   AM   CW   All mode  
Sensitivity less than 1 µV provides readable signal 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 2 kHz (-6 dB) Wide, Intermediate, Narrow and Very narrow settings.
500 Hz ... 25 kHz
-
Filters ? ? -
Receiver system Direct conversion Double conversion superheterodyne -
IF-freqs. ? ? -
Image rejection ? ? -
Audio output ? 1 W -

Transmitter

TX-range 15/20/40 m - -
Modulations CW   - All mode  
RF-output 40m: 3 W, 20m: 2.5 W, 15m: 2 W ? -

Connections

Antenna BNC - RCA (Tulip)
Impedance 50Ω 72Ω
Other - - -

Electrical

Power req. 13V DC Mains (110-250 V AC) Mains
Current RX 35 mA 82 W ?
TX 450 mA max - ?

Physical

Manufactured Between 1972 and 1975 in USA Between 1952 and 195x in Great Britain Between 1956 and 195x in USA
Dimensions 235 × 216 × 108 mm
(9.25 × 8.50 × 4.25 in)
747 × 385 × 451 mm
(29.41 × 15.16 × 17.76 in)
146 × 133 × 119 mm
(5.75 × 5.24 × 4.69 in)
Weight 2.04 kg (4.5 lbs) 60.90 kg (134.4 lbs) ?
Form factor Base Station Base Station Base Station

Other features

Memories ? ? None
Usage Amateur / Ham radio operators Marine / Navy Amateur / Ham radio operators
Features ? Automatic volume control ?
Accessories ? ? ?
MPN HEATHKIT-HW-000007 EDDYSTONE-000700 RME-MC-000055