Multichannel Rrd Of Hf Band «galaktika-4k»

This device is to be operated in the composition of HFradiocenters,it provides signal reception by four independent channels in the 1-30 MHz frequency band and also provides signal transmission in analogue or digital (I/Q-samples) form tothe consumer.Computer control (USB interface), traditional LFoutputs and digital outputs of I/Q-samples provide connection of consumer equipment on subcarrier frequency.

Main parameters:

  • Four antenna inputs of 50 Ohm,
  • SWRin <2.0, Sensitivity: (SNR=10dB, BW=3kHz) < 0.5 μV,
  • Single-signal dynamic range >126 dB,
  • Dynamic range with respect to intermodulation > 90 dB,
  • Frequency pass band 0.03..12 kHz (setting step 1 Hz),
  • Selectivity by neighboring channel > 80 dB,
  • Input attenuator 0..42 dB, step 6 dB,
  • AGC depth 120 dB,
  • ADC capacity 16 bits,
  • Suppression of spurious channels >90 dB,
  • Frequency instability: 0.5•10-7,
  • Frequency tuning step – 1 Hz,
  • Spectral density of heterodyne noise (Δf=1 kHz) –120 dBs/Hz,
  • Signal transmission in analogue form on BFO frequency0…±5 kHz with 10 Hz step or in digital form withFs=22.050 kHz (I/Q-samples: 16 or 24 bits),
  • Power supply: AC 220В/50 Hz (DC 20…32 V),
  • Power consumption: 65 W.
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