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HF Receiver
VHF Transceiver
Mobile VHF Transceiver

General

HAM bands 160m  80m  40m  20m  10m  2m  6m 
Freq. stability ? ? ?
Tuning steps Continuous ? 100 kHz

Receiver

RX-range 0.54-38.1 MHz in five bands 144-146 MHz 38-55 MHz
Modulations AM   CW   FM   CW   SSB   FM  
Sensitivity ? ? ?
Selectivity ? ? ?
Filters ? ? ?
Receiver system ? ? ?
IF-freqs. ? ? ?
Image rejection ? ? ?
Audio output ? ? External handset

Transmitter

TX-range - 144-146 MHz ?
Modulations - FM   CW   SSB   FM  
RF-output ? High: 25 W, Low: 1 W 0.9 W

Connections

Antenna - - BNC + Proprietary (military)
Impedance ? 50 Ω 50Ω
Other - - -

Electrical

Power req. Mains 13.8V DC 1.5, -6, 67.5 and 135 V DC 12 V DC from battery pack and a built-in voltage converter
Current RX ? ? ?
TX - Max 6 A ?

Physical

Manufactured Between 1938 and 19xx in USA Between 1983 and 198x in Japan Between 196x and 197x in Sweden by SRA
Dimensions ? 149 × 54 × 208 mm
(5.87 × 2.13 × 8.19 in)
265 × 455 × 85 mm
(10.43 × 17.91 × 3.35 in)
Weight ? 1.70 kg (3.8 lbs) 4.60 kg (10.1 lbs)
Form factor Unknown Mobile Mobile

Other features

Memories None ? ?
Usage Amateur / Ham radio operators Amateur / Ham radio operators Military communication
Features Separate speaker. S-meter option ? ?
Accessories ? ? ?
MPN HALLICRAFTERS-S-000018-SKY-CHALLENGER-II STANDARD-C-005800E MILITARY-RA-000105