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Last modified 2017-08-31

Drake SPR-4

A picture of Drake SPR-4

SPECIFICATIONS

GENERAL
Type:HF receiver
Frequency range:0.15-30 MHz in 23*500 KHz ranges (depending on XTALs)
Tuning steps:Continuous
Mode:AM/SSB/CW
Channels/memory management:No
Power supply:Mains: 120 / 240 VAC
12 VDC
Current drain/power consumption:Max 18 W @ mains
Max 500 mA @ 12 VDC
Antenna impedance/connector:50 ohms (range C-H), Hi-Z (range A-B)/ RCA (Phono)
Dimensions (W*H*D):274*140*324 mm (10.79*5.51*12.76")
Weight:8.2 Kg (18.08 lbs)
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 ohms
External speaker connector:




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