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Drake SPR4
Specifications

Return to Drake SPR4

Discontinued Communications Receivers 

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Specifications

Frequency Range ...... 0.15-.5, 0.5-1.5, 6-6.5, 7-7.5, 9.5-10,
                       11.5-12, 15-15.5, 17.5-18 and 21.5-22 MHz.
AC Power ............. 120/240 VAC
                       50 or 60 Hz  18 Watts
DC Power ............. 11-16 VDC (13.8 VDC nominal) 
Antenna Input ......   50 ohms nominal
Selectivity ..........  @ -6dB     @ -60dB
                        4.8 kHz   < 10.0 kHz
                        2.4 kHz   < 7.2 kHz
                         .4 kHz   < 2.7 kHz
Image Rejection ...... > 50 dB below 15 MHz, > 60 dB above 15 MHz.
Hum & Noise .......... > 60 dB below rated output 
Sensitivity .......... 10 dB S+ N/N
   SSB/CW                < 0.25µV               
   AM                   < 0.5µV   
Freq. Stability ...... ± 100 Hz 
Freq. Accuracy ....... ± 1 kHz
Intermediate Freqs. .. 1st IF = 5645 kHz
                       2nd IF = 50 kHz
Ext. Speaker Output .. 3 Watts, 4 Ohms.
                       < 10% distortion
Dimensions ........... 10.75 x 5.5 x 12.25 inches (274 x 140 x 324 mm) 
Weight ............... 18 Lbs. (8.2 kg)


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