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Handheld VHF Transceiver
Marine Shortwave receiver IMR54

General

HAM bands 6m  ?
Freq. stability 5 ppm per year ?
Tuning steps 25 kHz ?

Receiver

RX-range 30-76 MHz 15 kHz - 31 MHz in 10 bands
Modulations N-FM   AM   CW  
Sensitivity ? 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. 11.525 MHz ?
Image rejection ? ?
Audio output ? 1 W

Transmitter

TX-range 30-76 MHz -
Modulations N-FM   -
RF-output 4 W ?

Connections

Antenna Proprietary (military) -
Impedance 50Ω 72Ω
Other - -

Electrical

Power req. 24V DC Mains (110-250 V AC)
Current RX ? 82 W
TX ? -

Physical

Manufactured Between 19xx and 19xx in RACAL BCC Ltd. in England Between 1952 and 195x in Great Britain
Dimensions ? 747 × 385 × 451 mm
(29.41 × 15.16 × 17.76 in)
Weight ? 60.90 kg (134.4 lbs)
Form factor Handheld Base Station

Other features

Memories ? ?
Usage Military communication Marine / Navy
Features Range: 10 km when used with 1.2 meter standard whip antenna in open country side, and up to 20 km when used with a vehicle antenna. Automatic volume control
Accessories ? ?
MPN CLANSMAN-PRC-000351 EDDYSTONE-000700