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Portable Shortwave Transceiver
Handheld VHF/UHF Transceiver
Marine Shortwave receiver IMR54

General

HAM bands ? 2m  70cm  ?
Freq. stability ? ± 2.5 p.p.m. ?
Tuning steps 0.1 kHz 25 / 20 / 12.5 kHz ?

Receiver

RX-range 2-29.999 MHz 400-420 / 450-470 MHz 15 kHz - 31 MHz in 10 bands
Modulations AM   CW   SSB   USB   FM   AM   CW  
Sensitivity SSB/CW Narrow: 1.7µV @ 20 dB
AM: 7.5 µV @ 20 dB
0.25 / 0.28 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 ? 55 dB Wide, Intermediate, Narrow and Very narrow settings.
500 Hz ... 25 kHz
Filters CW wide: 2900 Hz, CW narrow: 400 Hz ? ?
Receiver system ? ? Double conversion superheterodyne
IF-freqs. ? ? ?
Image rejection ? ? ?
Audio output ? 400 mW @ ≤5% 1 W

Transmitter

TX-range 2-29.999 MHz 400-420 / 450-470 MHz -
Modulations AM   CW   SSB   USB   FM   -
RF-output SSB/CW: 3/30 W, AM: 7.5 W 0.5 / 2 W ?

Connections

Antenna - - -
Impedance 50Ω 50Ω 72Ω
Other - - -

Electrical

Power req. 20-28V DC 3.8V, 1700mAh (Li-ion) Mains (110-250 V AC)
Current RX 175 mA ? 82 W
TX 1.2 A ? -

Physical

Manufactured Between 198x and 19xx in UK Between 201x and 201x in China Between 1952 and 195x in Great Britain
Dimensions 330 × 90 × 250 mm
(12.99 × 3.54 × 9.84 in)
100 × 48 × 27 mm
(3.94 × 1.89 × 1.06 in)
747 × 385 × 451 mm
(29.41 × 15.16 × 17.76 in)
Weight 11.00 kg (24.3 lbs) 146 gr (5.2 oz) 60.90 kg (134.4 lbs)
Form factor Portable Handheld Base Station

Other features

Memories ? 16 channels in 1 bank(s) ?
Usage Military communication Commercial / Land mobile communication Marine / Navy
Features Range: 40 km by day under normal conditions Chargeable and Programmable through Mini USB Interface Automatic volume control
Accessories ? ? ?
MPN CLANSMAN-PRC-000320 HYTERA-TC-000320 EDDYSTONE-000700