WiNRADiO G31/33DDC

WiNRADiO G31DDC & G33DDC HF RX

WiNRADiO WR-G31DDC and G33-DDC are a high-performance, low-cost, direct-sampling, software-defined, shortwave receiver with a frequency range from 9 kHz to 50 MHz. It includes a real-time 50 MHz-wide spectrum analyzer and 2 MHz (G31DDC) or 4 MHz (G33DDC) wide instantaneous bandwidth available for recording, demodulation and further digital processing.

The receiver's superior performance results from its innovative, direct-sampling, digital down-converter architecture along with the use of leading-edge components and design concepts. These all result in a very high IP3, wide dynamic range, excellent sensitivity, selectivity and tuning accuracy. These key features create a receiver in a class of its own, with wide application potential, at a very affordable price.

  • High sensitivity
  • Audio and DDC recorder
  • Networking version of application software available
  • USB 2.0 interface
  • 2 (G31DDC) or 4 MHz (G33DDC) recording and processing bandwidt
  • 50 MHz-wide, real-time spectrum analyzer
  • go2signals support

Technical data

Feature G31DDC G33DDC
Receiver type Direct-sampling, digitally down-converting software-defined receiver Direct-sampling, digitally down-converting software-defined receiver
Frequency range 9 kHz to 49.995 MHz 9 kHz to 49.995 MHz
Tuning resolution 1 Hz 1 Hz
Mode AM, AMS, CW, LSB, USB, FMN, FSK,
UDM (user-defineable mode), DRM (optional)
AM, AMS, CW, LSB, USB, FMN, FSK,
UDM (user-defineable mode), DRM (optional)
Image Rejection 90 dB typ. 100 dB
IP3 +31 dBm typ. +31 dBm (preamp off)
+21 dBm (preamp on) C8
Attenuator 0 - 21 dB, adjustable in 3 dB steps 0 - 21 dB, adjustable in 3 dB steps
SFDR 107 dB typ. 107 dB min. (preamp off)
103 dB min. (preamp on
Noise figure 14 dB 14 dB (preamp off)
10 dB (preamp on)
MDS -130 dBm #10 MHz, 500 Hz BW -130 dBm @ 10 MHz, 500 Hz BW (preamp off)
-134 dBm @ 10 MHz, 500 Hz BW (preamp on)
Phase noise -145 dBc/Hz @ 10 kHz -145 dBc/Hz @ 10 kHz
RSSI accuracy 2 dB 2 dB
RSSI sensitivity -140 dBm -140 dBm
Processing and recording bandwidth
(DDC bandwidth)
20 kHz - 2 MHz (selectable in 21 steps) 20 kHz - 4 MHz (selectable in 24 steps)
Demodulation bandwidth
(selectivity)
10 Hz - 62.5 kHz (selectable in 1 Hz steps) 1 Hz - 62.5 kHz (selectable in 1 Hz steps)
Spectrum analyzer Input spectrum/waterfall, 30 or 50 MHz wide, 1.5 kHz resolution bandwidth
DDC spectrum/waterfall, max 2 MHz wide, 1 Hz resolution bandwidth
Channel spectrum, max 62.5 kHz wide, 1 Hz resolution bandwidth
Demodulated audio, 16 kHz wide, 1 Hz resolution bandwidth
Input spectrum/waterfall, 30 or 50 MHz wide, 1.5 kHz resolution bandwidth
DDC spectrum/waterfall, max 4 MHz wide, 1 Hz resolution bandwidth
Channel spectrum, max 62.5 kHz wide, 1 Hz resolution bandwidth
Demodulated audio, 16 kHz wide, 1 Hz resolution bandwidth
ADC 16 bit, 100 MSPS 16 bit, 100 MSPS
Sensitivity
(Typ. @ 10 MHz)
-101 dBm @ AM: 30% mod., 10 dB S+N/N
-116 dBm @ SSB: 10 dB S+N/N
-123 dBm @ CW: 10 dB S+N/N
-112 dBm @ FM: 3 kHz dev., 12 dB SINAD
Note: Below 200 kHz, the sensitivity gradually drops.
-106 dBm @ AM: 30% mod., 10 dB S+N/N
-121 dBm @ SSB: 10 dB S+N/N
-127 dBm @ CW: 10 dB S+N/N
-117 dBm @ FM: 3 kHz dev., 12 dB SINAD
Note: Below 200 kHz, the sensitivity gradually drops.
Tuning accuracy 0.5 ppm @ 25 ° C 0.5 ppm @ 25 ° C
Tuning stability 2.5 ppm (0 to 50° C) 0.5 ppm (0 to 50° C)
MW filter Cut-off frequency 1.8 MHz @ -3 dB
Attenuation 60 dB min @ 0.5 MHz
Cut-off frequency 1.8 MHz @ -3 dB
Attenuation 60 dB min @ 0.5 MHz
Preselection filters   119 filters available in automatic or manual mode (14 high pass, 14 low pass and 91 bandpass) + bypass
Antenna input 50 ohm (SMA connector) 50 ohm (SMA connector)
Output 24-bit Digitized IQ signal over USB interface 24-bit Digitized IQ signal over USB interface
Interface USB 2.0 High speed USB 2.0 High speed
Power supply 11-13 V DC @ 500 mA typ.
11-13 V DC @ 45 mA typ. (power save)
11-13 V DC @ 510 mA typ. (preamp off)
11-13 V DC @ 620 mA typ. (preamp on)
11-13 V DC @ 55 mA typ. (power save)
Operating temperature 0°C to 50°C 0°C to 50°C