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General coverage version of the Collins KWM-380. Solid state design featuring single-knob tuning over the entire frequency range without band-switching. Microprocessor controlled.

General characteristics

HAM bands
?
Frequency 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.
Memories
None

Receiver

RX-range
0.2-30 MHz
Modulations
AM   CW   USB   LSB   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.
Selectivity
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
?
Receiver system
Double conversion superheterodyne (?)
IF-frequencies
1st: ?
2nd: 455 kHz
Image rejection
≥ 60 dB
Audio output
Internal speaker

Connections

Antenna
BNC
Impedance
50Ω
Other
-

Electrical

Power requirements
Mains or 13.8 V DC
Current drain RX
?
TX
-

Physical

Dimensions (w×h×d)
394 × 191 × 457 mm (15.51 × 7.52 × 17.99 in) with feet
Weight
12.70 kg (28.0 lbs)
Form factor
Base Station
Manufactured
Between 19xx and 19xx in USA

Other features

Usage
Amateur / Ham radio operators
Features + options
Passband tuning
Built-in AC/DC power supply
Built-in speaker
Digital frequency readout
Accessories
-
RigReference ID
2520
MPN
COLLINS-000451S-1

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New and second-hand prices

Estimating the value of a rig can be challenging. We collect prices paid by real hams over the years to help you estimate the value of a used Collins 451S-1. Just bought or sold this model? Let us know what you traded it for and help other ham operators!

Based on similar Receiver equipment, the estimated value of the Collins 451S-1 is around:

  • USD 140 ~ USD 260

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