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The Collins 51J-4 receiver is designed for communication applications where stability and dial accuracy of the highest order are the prime requisites. Under normal operating conditions, the receiver operates in the range of 540 kc to 30.5 mc with a total setting error and drift of less than 1 kc at any frequency within its range. The receiver is designed for amplitude- modulated (AM) and continuous wave (CW) reception, although its accuracy and stability make it suitable for many applications where it is desired to receive or set definite frequencies without searching or making frequent adjustments.

General characteristics

HAM bands
?
Frequency stability
Dial calibration at room temperature is within 300 cps if the nearest 100 kc calibration point is used to adjust the fiducial.
Tuning steps
?
Memories
?

Receiver

RX-range
0.54-30.5 MHz
Modulations
AM   CW  
Sensitivity
Band 1: < 15 µV gives 10 dB S/N
Bands 2 to 30: < 5 µV gives 10 dB S/N
Selectivity
1 / 3 / 6 / 10 kHz
Filters
?
Receiver system
?
IF-frequencies
?
Image rejection
?
Audio output
?

Connections

Antenna
SO-239 + Clamps / screws
Impedance
50Ω
Other
-

Electrical

Power requirements
Mains (115 or 230 V AC, 45~70 Hz)
Current drain RX
85 W
TX
-

Physical

Dimensions (w×h×d)
536 × 317 × 333 mm (21.10 × 12.48 × 13.11 in)
Weight
24.90 kg (54.9 lbs)
Form factor
Base Station
Manufactured
Between 1957 and 1963 in USA

Other features

Usage
Amateur / Ham radio operators
Features + options
-
Accessories
-
RigReference ID
2507
MPN
COLLINS-000051J-4

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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 51J-4. Just bought or sold this model? Let us know what you traded it for and help other ham operators!

Based on historic data, today's second-hand price of the Collins 51J-4 is around:

  • USD 424.00

Price History Chart

These estimates are based on the following prices:

Year Historic price Condition Submitted by
2019 USD 425.00 Used / Good RigReference

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