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Mobile UHF Transceiver
Desktop Shortwave receiver
Desktop ULF/VLF Receiver

General

HAM bands 70cm  ? 2000m 
Freq. stability ? Within 1100 Hz (or 120 Hz using optional oven standard) over the temperature range of 0-50 °C. ?
Tuning steps ? Selectable steps of 10 Hz, 100 Hz, 1 kHz or 1 MHz; 200 steps per revolution (20 for 1 MHz steps) of tuning knob. Continuous

Receiver

RX-range 430-440 MHz 0.2-30 MHz 15-500 / 500-1500 kHz (2 ranges, 7 bands)
Modulations FM   AM   CW   USB   LSB   FSK   AM   CW   FSK  
Sensitivity ? (at 1.6 to 30 MHz, not more than antenna input) 0.5 µV for 10 dB S+N/N for SSB and CW using 2.1 kHz filter and 3.5 µV in AM (30% mod 1 kHz) using 6-kHz filter 0.2 to 1.6 MHz, not more than 1.5 µV SSB/CW and 10 µV AM for above conditions. 6 µV
Selectivity 6 kHz (-6 dB), 15 kHz (-60 dB) Filter -3dB Min -60 dB Max
6.0 6.0 kHz 30.0 kHz
2.1 2.1 kHz 4.4 kHz
360 360 Hz 1250.0 Hz

optional
AC-3811 140 Hz 600 Hz
AC-3812 1.7 kHz 3.4 kHz
AC-3814 3.0 kHz 9.0 kHz
?
Filters ? ? 0.1 / 1 / 2 / 4 / 8 kHz
Receiver system ? Double conversion superheterodyne (?) Double conversion cuperheterodyne, including circuit arragement for cancelling drift of crystal oscillator (34 tubes)
IF-freqs. ? 1st: ?
2nd: 455 kHz
?
Image rejection 60 dB ≥ 60 dB ?
Audio output ? Internal speaker 500 mW unbalanced, 10 mW balanced

Transmitter

TX-range 430-440 MHz - -
Modulations FM   - -
RF-output High: 35 W, Low: 5 W ? ?

Connections

Antenna - BNC Proprietary
Impedance 50 Ω 50Ω 125Ω
Other - - -

Electrical

Power req. 13.8V DC Mains or 13.8 V DC Mains (115/230 V AC)
Current RX 0.8 A ? 250 W with oven on, 150 W when oven off
TX Max 10 A - -

Physical

Manufactured Between 199x and 199x in Japan Between 19xx and 19xx in USA Between 1951 and 19xx in USA
Dimensions 140 × 40 × 154 mm
(5.51 × 1.57 × 6.06 in)
394 × 191 × 457 mm
(15.51 × 7.52 × 17.99 in)
483 × 267 × 438 mm
(19.02 × 10.51 × 17.24 in)
Weight 860 gr (1.9 lbs) 12.70 kg (28.0 lbs) 37.20 kg (82.1 lbs) including power supply PP-621/URR
Form factor Mobile Base Station Base Station

Other features

Memories 100 channels in 1 bank(s) None None
Usage Amateur / Ham radio operators Amateur / Ham radio operators Amateur / Ham radio operators
Features ? Passband tuning
Built-in AC/DC power supply
Built-in speaker
Digital frequency readout
Operating altitude up to 10,000 feet
Accessories ? ? ?
MPN ALINCO-DR-M000040H COLLINS-000451S-1 COLLINS-R-000389/URR