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Desktop Shortwave Transceiver
Desktop ULF/VLF Receiver
Desktop Receiver

General

HAM bands 80m  40m  20m  15m  10m  2000m  80m  40m  20m  15m  10m 
Freq. stability ? ? ?
Tuning steps Continuous Continuous Continuous

Receiver

RX-range 10-80m 15-500 / 500-1500 kHz (2 ranges, 7 bands) -
Modulations CW   USB   LSB   AM   CW   FSK   -
Sensitivity 0.5 µV @ 10 dB S+S/N 6 µV ?
Selectivity 2.1 kHz @ 6 dB (1.8:1 shape factor) ? ?
Filters 9MHz crystal 0.1 / 1 / 2 / 4 / 8 kHz ?
Receiver system Superheterodyne Double conversion cuperheterodyne, including circuit arragement for cancelling drift of crystal oscillator (34 tubes) ?
IF-freqs. ? ? ?
Image rejection ? ? ?
Audio output External speaker required 500 mW unbalanced, 10 mW balanced ?

Transmitter

TX-range 10-80m - 80-10 m
Modulations CW   USB   LSB   - AM   CW  
RF-output SSB: 550 W PEP, CW: 360 W ? ± 40 W

Connections

Antenna SO-239 Proprietary SO-239
Impedance 50Ω 125Ω 50Ω
Other - - -

Electrical

Power req. Mains via CS550 Power Supplier / Speaker unit Mains (115/230 V AC) Mains
Current RX ? 250 W with oven on, 150 W when oven off -
TX ? - ?

Physical

Manufactured Between 1969 and 19xx in USA Between 1951 and 19xx in USA Between 1962 and 196x in Brazil
Dimensions 152 × 280 × 330 mm
(5.98 × 11.02 × 12.99 in)
483 × 267 × 438 mm
(19.02 × 10.51 × 17.24 in)
?
Weight 7.70 kg (17.0 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 ?
Usage Amateur / Ham radio operators Amateur / Ham radio operators Amateur / Ham radio operators
Features ? Operating altitude up to 10,000 feet 1 × 807 / 2 × EL34 tubes
Accessories ? ? ?
MPN GALAXY-GT000550 COLLINS-R-000389/URR DELTA-000310-I