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Handheld VHF Transceiver
Handheld HF/VHF/UHF Scanner / receiver
Marine Shortwave receiver IMR54

General

HAM bands 2m  6m  ?
Freq. stability ? ? ?
Tuning steps ? ? ?

Receiver

RX-range 144-146 MHz 29-54 / 108-174 / 406-512 / 806-956 MHz 15 kHz - 31 MHz in 10 bands
Modulations FM   AM   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 ? Triple conversion superheterodyne Double conversion superheterodyne
IF-freqs. ? ? ?
Image rejection ? ? ?
Audio output ? 180 mW max 1 W

Transmitter

TX-range 144-146 MHz - -
Modulations FM   - -
RF-output ? ? ?

Connections

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

Electrical

Power req. ?V DC 4.8V DC Mains (110-250 V AC)
Current RX ? ? 82 W
TX ? - -

Physical

Manufactured Between 19xx and 19xx Between 1999 and 200x Between 1952 and 195x in Great Britain
Dimensions 50 × 90 × 38 mm
(1.97 × 3.54 × 1.50 in)
64 × 165 × 45 mm
(2.52 × 6.50 × 1.77 in)
747 × 385 × 451 mm
(29.41 × 15.16 × 17.76 in)
Weight 260 gr (9.2 oz) 325 gr (11.5 oz) 60.90 kg (134.4 lbs)
Form factor Handheld Handheld Base Station

Other features

Memories ? 100 channels in 10 bank(s) @ 100 channels/second ?
Usage Amateur / Ham radio operators Amateur / Ham radio operators Marine / Navy
Features RX: UHF. Twin RX Alert beep
Alpha-tags,
Attenuator
Autolight
Limit search
Rotary control
Turbo-search (300 chn/sec)
VFO search
Automatic volume control
Accessories ? ? ?
MPN STANDARD-C-000116 UNIDEN-BEARCAT-SC-000180 EDDYSTONE-000700