Source: rigpix
Receivers
Updated: 09/02/2026
Collins 51J-4
Confidence score: 50%
Estimated value
348€
Theoretical estimate
296€
Minimum
400€
Maximum
Specifications
GENERAL
- Type
- HF receiver
- Frequency range
- 0.54 - 30.5 MHz in thirty 1 MHz bands
- Tuning steps
- Continuous
- Frequency stability
- Within 300 Hz @ room temperature if the nearest 100 KHz calibration point is used to adjust the fiducial
- Mode
- AM / CW / MCW
- Channels / memory management
- None
- Power supply
- Mains: 115 / 230 VAC (Fixed power cord)
- Current drain / power consumption
- 85 W
- Antenna impedance / connector
- Hi-Z / SO-239
- Dimensions (W*H*D)
- 483*267*333 mm (19*10.5*13.11")
- Weight
- 19.5 Kg (43 lb)
- Other features
- Noise limiter. 500 KHz IF output. 100 KHz calibrator.
RECEIVER SECTION
- Receiver system
- Single conversion superheterodyne (1.5-3.5 MHz) IF: 500 KHz Double conversion superheterodyne (3.5-30.5 MHz) 1st IF: 1.5-2.5 MHz (Even bands) - 2.5-3.5 MHz (Odd bands) 2nd IF: 500 KHz Triple conversion superheterodyne (0.5-1.5 MHz) 1st IF: 10.5-11.5 MHz 2nd IF: 2.5-3.5 MHz 3rd IF: 500 KHz
- Sensitivity
- Band 1: Less than 15 uV gives 1 W @ 10 dB S/N Band 2-30: Less than 5 uV gives 1 W @ 10 dB S/N
- Selectivity
- 100 Hz to 6.3 KHz (Depending on filter complement & selectivity setting)
- AF output power / speaker
- 1.5 W at 15% distortion / External only
- External speaker connector
- 4 or 600 ohm, Screw terminals
User reviews
Write a review
Share your experience with the Collins 51J-4