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Desktop Shortwave receiver
Desktop ULF/VLF Receiver
Multiband SSB Transceiver

General

HAM bands 80m  40m  20m  15m  10m  2000m  80m  40m  20m  15m  10m 
Freq. stability ? ? 100 Hz after 30 minutes warm up
Tuning steps ? Continuous Continuous

Receiver

RX-range 10-80 m 15-500 / 500-1500 kHz (2 ranges, 7 bands) 80-10 m
Modulations AM   CW   SSB   AM   CW   FSK   AM   CW   SSB   USB  
Sensitivity ? 6 µV ?
Selectivity ? ? 2.4 kHz @ -6 dB / 4.2 kHz @ -60 dB
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 ? ? 50 dB
Audio output Requires external speaker 500 mW unbalanced, 10 mW balanced 2 W @ 5% THD into 8 ohms

Transmitter

TX-range - - 80-10 m
Modulations - - AM   CW   SSB   USB  
RF-output ? ? 500 W PEP

Connections

Antenna - Proprietary SO-239
Impedance 50 Ω 125Ω 50-75Ω
Other - - -

Electrical

Power req. Mains Mains (115/230 V AC) Mains
Current RX ? 250 W with oven on, 150 W when oven off ?
TX - - 450 W

Physical

Manufactured Between 19xx and 19xx in USA Between 1951 and 19xx in USA Between 1982 and 19xx in Brazil
Dimensions 374 × 169 × 292 mm
(14.72 × 6.65 × 11.50 in)
483 × 267 × 438 mm
(19.02 × 10.51 × 17.24 in)
398 × 360 × 180 mm
(15.67 × 14.17 × 7.09 in)
Weight 9.00 kg (19.9 lbs) 37.20 kg (82.1 lbs) including power supply PP-621/URR 12.50 kg (27.6 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 ? Operating altitude up to 10,000 feet Digital display
Accessories ? ? ?
MPN COLLINS-000075S-1 COLLINS-R-000389/URR DELTA-DBR-000550-II