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Desktop Shortwave receiver
Desktop Shortwave Transceiver
20m Single Sinde Band Transceiver

General

HAM bands ? 80m  40m  20m  15m  10m  20m 
Freq. stability ? ± 50 cps per hour after warm up ?
Tuning steps ? ? Continuous

Receiver

RX-range 0.55-30 MHz 10-80 m 20 m (14.2-14.35 MHz)
Modulations AM   CW   AM   CW   SSB   USB  
Sensitivity ? 0.5 µV for 10 dB S/N in SSB mode ?
Selectivity ? SSB: 2.8 kHz (-6 dB) ?
Filters ? ? ?
Receiver system ? Double conversion superheterodyne ? conversion superheterodyne
IF-freqs. ? ? ?
Image rejection ? ? ?
Audio output ? Requires external speaker ?

Transmitter

TX-range - 10-80 m 20 m (14.2-14.35 MHz)
Modulations - AM   CW   SSB   USB  
RF-output ? AM: 100 W (input), SSB: 200 W (PEP input), CW: 200 W (input) 150 W (PEP input)

Connections

Antenna - SO-239 + Clamps / screws SO-239
Impedance 50 Ω 25/100Ω 50/75Ω
Other - - -

Electrical

Power req. Mains Mains (NCX-A) ?
Current RX ? ? ?
TX - ? ?

Physical

Manufactured Between 1961 and 1963 in USA Between 1965 and 196x in USA Between 1962 and 196x
Dimensions 311 × 133 × 209 mm
(12.24 × 5.24 × 8.23 in)
350 × 165 × 310 mm
(13.78 × 6.50 × 12.20 in)
?
Weight 4.00 kg (8.8 lbs) 10.40 kg (22.9 lbs) ?
Form factor Base Station Base Station Base Station

Other features

Memories ? None None
Usage Amateur / Ham radio operators Amateur / Ham radio operators Amateur / Ham radio operators
Features ? ? ?
Accessories ? NCX-A Power supply / speaker ?
MPN HEATHKIT-GR-000091 NATIONAL-COMPANY-NCX-000005-MKII SWAN-(CUBIC)-SW-000120