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HF/VHF Surveillance Receiver
Desktop Shortwave receiver

General

HAM bands 15m  12m (WARC)  11m (CB)  6m  10m  4m  ?
Freq. stability ? ?
Tuning steps Continuous Continuous

Receiver

RX-range 20-80 MHz 0.55-30 MHz
Modulations AM   FM   N-FM   CW   AM   CW  
Sensitivity AM ca. 0,5 μV
FM ca. 1,2 μV
?
Selectivity 4 / 10 / 50 kHz @ -6 dB ?
Filters ? ?
Receiver system Double conversion superheterodyne ?
IF-freqs. 10 MHz / 455 kHz ?
Image rejection ? ?
Audio output Requires headphones or external speaker ?

Transmitter

TX-range - -
Modulations - -
RF-output ? ?

Connections

Antenna - -
Impedance 50Ω ?
Other - -

Electrical

Power req. Mains (220 V AC) Mains
Current RX 16 W ?
TX - -

Physical

Manufactured Between 1980 and 198x in USA Between 1970 and 1972 in USA
Dimensions 483 × 90 × 478 mm
(19.02 × 3.54 × 18.82 in)
?
Weight 8.20 kg (18.1 lbs) ?
Form factor Base Station Base Station

Other features

Memories None ?
Usage Military communication Amateur / Ham radio operators
Features ? ?
Accessories DRO-290 Digital Nixie-tube display ?
MPN WATKINS-JOHNSON-WJ-000521A-1 HALLICRAFTERS-S-000125