Japan Radio Co.
NRD-630

Specifications

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Communications Receivers 

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NRD-630 Specifications

Frequency Range ..... 90.000 - 29999.999 kHz
Reception Modes ..... CW, MCW, DSB, USB/LSB, FSK, FAX, ISB
Power ............... 85-264 VAC 50/60 Hz  
                      or 24 VDC 50 W.
Antenna Impedance ... 50 ohm
Selectivity (-6dB) .. 6.0 kHz
                      3.0 kHz
                      2.7 kHz
                      1.0 kHz 
                      0.5 kHz 
                      0.3 kHz 
Sensitivity ......... 2µV SSB 1.6-30 MHz (10 dB S+N/N)
Stability ........... ± 0.2 PPM
IF Frequencies ...... 1st 70.455 MHz, 2nd 455 kHz, 3rd 17 kHz
IF Rejection ........ > 80 dB
Image Rejection ..... > 70 dB
Standard Steps ...... 1 Hz, 10 Hz, 100 Hz, 1 kHz
                      5 kHz, 9 kHz, 10 kHz or 100 kHz. 
RF Attenuator ....... 20 dB
BFO Range ........... ± 9.999 kHz 1 Hz steps
Clarifier Range ..... ± 200 Hz 1 Hz steps
PBS Range ........... ± 2.3 kHz
Audio Output ........ 1 watt internal speaker
                      1 watt external speaker 8 ohm
                      10 mW or more headphone 600 ohm
Line Output ......... ± 10 dB (600 ohm balanced)
Circuit Type ........ Triple Conversion Superheterodyne
Temperature ......... -15° to 55°C 
Dimensions .......... 19 x 7.5 x 12 inches (480x149x294 mm)  
Weight .............. 22 Lbs. net (10 kg)


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