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Desktop HF/VHF Transmitter
Desktop Shortwave Transmitter
Desktop Shortwave Transmitter

General

HAM bands 80m  40m  20m  15m  6m  10m  160m  80m  40m  20m  15m  10m  160m  80m  40m  20m  15m  10m 
Freq. stability ? ? ?
Tuning steps ? ? Continuous

Receiver

RX-range - - -
Modulations - - -
Sensitivity ? ? ?
Selectivity ? ? ?
Filters ? ? ?
Receiver system ? ? ?
IF-freqs. ? ? ?
Image rejection ? ? ?
Audio output ? ? ?

Transmitter

TX-range 80-10 + 6 m 160-10 m 160-10 m
Modulations AM   CW   CW   AM   CW   SSB  
RF-output AM: 40 W, CW: 70 W 25 W AM: 200 W, SSB/CW: 275 W

Connections

Antenna - - -
Impedance ? ? 50/600Ω
Other - - -

Electrical

Power req. Mains Mains Mains
Current RX - - -
TX ? 40 W ?

Physical

Manufactured Between 196x and 196x in USA Between 195x and 196x in USA Between 1956 and 1962 in USA
Dimensions ? 240 × 335 × 254 mm
(9.45 × 13.19 × 10.00 in)
530 × 290 × 410 mm
(20.87 × 11.42 × 16.14 in)
Weight ? 11.35 kg (25.0 lbs) 33.00 kg (72.8 lbs)
Form factor Base Station Base Station Base Station

Other features

Memories ? ? None
Usage Amateur / Ham radio operators Amateur / Ham radio operators Amateur / Ham radio operators
Features XTAL or external VFO XTAL & VFO XTAL and VFO
Accessories ? ? ?
MPN E.F.-JOHNSON-VIKING-CHALLENGER E.F.-JOHNSON-VIKING-NAVIGATOR E.F.-JOHNSON-VIKING-VALIANT