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Desktop Shortwave receiver
Desktop ULF/VLF Receiver
430 MHz All Mode Transceiver

General

HAM bands 80m  40m  20m  2000m  2000m  70cm 
Freq. stability ? ? ?
Tuning steps Continuous Continuous ?

Receiver

RX-range 0.1-0.4 / 2.5-20 MHz 15-500 / 500-1500 kHz (2 ranges, 7 bands) 430-440 MHz
Modulations AM   CW   AM   CW   FSK   AM   FM   CW   SSB  
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) Double/triple conversion
IF-freqs. ? ? ?
Image rejection ? ? ?
Audio output ? 500 mW unbalanced, 10 mW balanced ?

Transmitter

TX-range - - 430-440 MHz
Modulations - - AM   FM   CW   SSB  
RF-output ? ? 10 W (AM: 4W)

Connections

Antenna Clamps / screws Proprietary SO-239
Impedance 100Ω 125Ω 50 Ω
Other - - -

Electrical

Power req. Separate PSU Mains (115/230 V AC) 12V DC
Current RX ? 250 W with oven on, 150 W when oven off ?
TX - - ?

Physical

Manufactured Between 1939 and 1945 in USA Between 1951 and 19xx in USA Between 1976 and 1979 in Japan
Dimensions ? 483 × 267 × 438 mm
(19.02 × 10.51 × 17.24 in)
?
Weight 33.00 kg (72.8 lbs) 37.20 kg (82.1 lbs) including power supply PP-621/URR ?
Form factor Base Station Base Station Base Station

Other features

Memories None None 10 channels in 1 bank(s)
Usage Amateur / Ham radio operators Amateur / Ham radio operators Amateur / Ham radio operators
Features ? Operating altitude up to 10,000 feet 10 crystal controlled channels
optional R-707PS Power supply / speaker unit
Accessories ? ? ?
MPN HAMMARLUND-SP-000210-LX COLLINS-R-000389/URR BELCOM-LS-000707