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Last modified 2023-01-28

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Drake SPR-4

A picture of Drake SPR-4

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)
Other features:




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)
Image rejection:
AF output power / speaker:3 W at ?% distortion / 4 ohm
External speaker connector:




MISCELLANEOUS
Manufactured:USA, 1970-197x (Discontinued)
Additional info:New price in the US. $449.00
Related documents:
Modifications and fixes:
Reviews:
Options / Accessories:
SCC-4
5-NB
Crystal calibrator
Noise blanker
A rear picture of Drake SPR-4