Source: rigpix
Receivers
Updated: 09/02/2026
Drake SPR-4
Confidence score: 50%
Estimated value
736€
Theoretical estimate
626€
Minimum
846€
Maximum
Specifications
GENERAL
- Type
- HF receiver
- Frequency range
- 0.15-30 MHz in twentythree 500 KHz ranges (Depending on XTALs)
- Tuning steps
- Continuous
- Frequency stability
- ? ppm
- Mode
- AM / SSB / CW
- Channels / memory management
- None
- Power supply
- Mains: 120 / 240 VAC or 12 VDC
- Current drain / power consumption
- Max 18 W @ mains Max 500 mA @ 12 VDC
- Antenna impedance / connector
- 50 ohm (Range C-H) / Phono (RCA) Hi-Z (Range A-B) / Phonno (RCA)
- Dimensions (W*H*D)
- 274*140*324 mm (10.79*5.51*12.76")
- Weight
- 8.2 Kg (18.08 lb)
RECEIVER SECTION
- Receiver system
- Double conversion superheterodyne 1st IF: 5.645 MHz 2nd IF: 50 KHz
- Sensitivity
- AM: 0.5 uV (10 dB S+N/N) SSB/CW: 0.25 uV (10 dB S+N/N)
- Selectivity
- AM: 4.8 KHz (-6 dB) 10 KHz (-60 dB) SSB: 2.4 KHz (-6 dB) 7.2 KHz (-60 dB) CW: 400 Hz (-6 dB) 2.7 KHz (-60 dB)
- AF output power / speaker
- 3 W at ?% distortion / 4 ohm
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