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Desktop Shortwave receiver
Desktop ULF/VLF Receiver

General

HAM bands ? 2000m 
Freq. stability ? ?
Tuning steps ? Continuous

Receiver

RX-range 0.54-30 MHz 15-500 / 500-1500 kHz (2 ranges, 7 bands)
Modulations AM   CW   SSB   AM   CW   FSK  
Sensitivity ? 6 µV
Selectivity ? ?
Filters ? 0.1 / 1 / 2 / 4 / 8 kHz
Receiver system ? Double conversion cuperheterodyne, including circuit arragement for cancelling drift of crystal oscillator (34 tubes)
IF-freqs. ? ?
Image rejection ? ?
Audio output ? 500 mW unbalanced, 10 mW balanced

Transmitter

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

Connections

Antenna - Proprietary
Impedance ? 125Ω
Other - -

Electrical

Power req. Mains Mains (115/230 V AC)
Current RX ? 250 W with oven on, 150 W when oven off
TX - -

Physical

Manufactured Between 1959 and 1963 in USA Between 1951 and 19xx in USA
Dimensions 482 × 266 × 330 mm
(18.98 × 10.47 × 12.99 in)
483 × 267 × 438 mm
(19.02 × 10.51 × 17.24 in)
Weight ? 37.20 kg (82.1 lbs) including power supply PP-621/URR
Form factor Base Station Base Station

Other features

Memories ? None
Usage Amateur / Ham radio operators Amateur / Ham radio operators
Features ? Operating altitude up to 10,000 feet
Accessories ? ?
MPN HAMMARLUND-HQ-000145 COLLINS-R-000389/URR