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Desktop ULF/VLF Receiver
Desktop Receiver
Desktop Receiver

General

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

Receiver

RX-range 15-500 / 500-1500 kHz (2 ranges, 7 bands) ? -
Modulations AM   CW   FSK   AM   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) ? ?
IF-freqs. ? ? ?
Image rejection ? ? ?
Audio output 500 mW unbalanced, 10 mW balanced ? ?

Transmitter

TX-range - - 80-10 m
Modulations - - AM   CW  
RF-output ? ? ± 40 W

Connections

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

Electrical

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

Physical

Manufactured Between 1951 and 19xx in USA Between 1964 and 196x in Brazil Between 1962 and 196x in Brazil
Dimensions 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 Base Station

Other features

Memories None ? ?
Usage Amateur / Ham radio operators Amateur / Ham radio operators Amateur / Ham radio operators
Features Operating altitude up to 10,000 feet BFO 1 × 807 / 2 × EL34 tubes
Accessories ? ? ?
MPN COLLINS-R-000389/URR DELTA-000209 DELTA-000310-I