Data Communications Solution

The WiNRADiO WR-G39DDC 'EXCELSIOR' series offers high-performance HF/VHF/UHF/SHF software-defined receivers with a frequency range from 9 kHz to 3500 MHz, with two independent channels of 4 MHz wide instantaneous bandwidth available for recording and further digital processing, plus a 16 MHz wide real-time spectrum analyzer. These receivers offer a flexible SDR architecture, respectable dynamic range, high sensitivity and scanning speed, fulfilling multiple roles of monitoring, surveillance, fast-search and measuring receivers, with many operational and instrumentation features not usually found on receivers of any price category.

There are two receiver models of identical RF specifications and performance, but with different types of computer interface: PCI E and USB



The WiNRADiO WR-G39DDCi 'EXCELSIOR' is a high-performance HF/VHF/UHF/SHF software-defined receiver with a frequency range from 9 kHz to 3500 MHz, with two independent channels of 4 MHz wide instantaneous bandwidth available for recording and further digital processing, plus a 16 MHz wide real-time spectrum analyzer.

(PCI-E optional reference input/output and IF output shown.)

The receiver offers an unparalleled flexibility given its SDR architecture, respectable dynamic range, high sensitivity, scanning speed and accuracy of performance, making it capable of filling not only the role of a monitoring receiver but also that of a fast search receiver and measuring receiver, with many operational and instrumentation features not usually found on receivers of any price category.

(External version for USB conncetion)


  • Frequency range 9 kHz to 3500 MHz
    (except cellular bands where required by law)
  • Ultra-fast search speed 1 GHz/s
  • Two independent receiver channels
  • Real-time spectrum analyzer up to 16 MHz wide
  • Unlimited width swept spectrum analyzer
  • Audio spectrum analyzer
  • Audio and DDC recorder
  • High sensitivity
  • Excellent dynamic range
  • Numerous signal analysis tools
  • Numerous types of search and scanning modes
  • Numerous precise measuring tools
  • Optional IF output (70 MHz)
  • Optional reference input/output (10 MHz)
  • PCI-e bus interface

The receiver has a robust front-end, which features an up-converter for excellent suppression of mirror images, eliminating a need for complex pre-selector filters which introduce distortion and reduce the noise figure.

The receiver connects to an IBM-compatible PC via the PCI-e bus. Several receivers can reside on a single PC to form a multi-channel receiver system.

This is the first time a receiver of such advanced specification and unique combination of features is being offered to the general marketplace. The receiver is intended for government, military, security, surveillance, broadcast monitoring, industrial and demanding consumer applications. Easily installed to any modern computer with the PCI-e bus interface, this receiver represents an excellent general-purpose mobile and stationary solution for HF/VHF/UHF/SHF monitoring and surveillance.

System requirements:

  • PC with 2.4 GHz quad core CPU or faster
  • One PCI-e bus slot or one free USB 2.0 port 
  • Windows XP/Vista/7

System requirements:  

PC with 2,4 GHz Quad core CPU or faster* One free USB 2.0 socket Windows XP/Vista/7 * Depending on available CPU resources on a particular computer, the receiver may work with lower-specification CPUs, but this may result in somewhat reduced performance in terms of maximum achievable selectivity and DDC bandwidth.


The WR-G39DDCi software contains numerous advanced features such as several types of searching and scanning, five types of squelch, many tuning options, virtually unlimited memories and a rich on-line help facility.

There are two concurrent DDC channels with 24 selectable output bandwidths ranging from 20 kHz to 4 MHz. Each can be used as an independent "virtual receiver". There is is also a simultaneous 16 MHz wide real-time spectrum analyzer. There are numerous demodulation modes, continuously variable demodulator bandwidth from 1 Hz to 320 kHz (in 1 Hz increments), waterfall spectrum analyzers, scanning, searching, logging and task scheduling facilities, as well as an audio real-time spectrum analyzer, test and measurement functions, noise blankers and notch filters.

There is also an integrated recorder, making it possible to instantly record and playback the received signal both at the IF and audio levels, for both channels. Recording offers also pre-buffering feature in order not to lose any transmission.

The receiver is entirely software-defined, which means that additional demodulations or decoding modes can be easily added by a mere software change.

WR-G39DDCi Specifications

Receiver typeDual DDC software-defined receiver with up-converter superheterodyne front end
Frequency range9 kHz to 3500 MHz
Tuning resolution1 Hz
ModeAM, AMS, CW, LSB, USB, ISB, DSB, FMN, FMW (stereo), FSK,
UDM (user-defineable mode), DRM (optional)
Image Rejection90 dB (< 50 MHz)
75 dB (50 - 500 MHz)
77 dB (> 500 MHz)
IP3+6 dBm typ. (< 50 MHz) @ 5 kHz spacing
+1 dBm typ. (> 50 MHz) @ 10 kHz spacing (preamp off)
SFDR90 dB typ. (< 50 MHz)
87 dB typ. (> 50 MHz) (preamp off)
86 dB typ. (> 50 MHz) (preamp on)
Noise figure15 dB typ. (< 50 MHz)
15 dB typ. (> 50 MHz) preamp off
6 dB typ. (> 50 MHz) preamp on
MDS-129 dBm / 500 Hz typ. (< 50 MHz)
-129 dBm / 500 Hz typ. (> 50 MHz) preamp off
-138 dBm / 500 Hz typ. (> 50 MHz) preamp on
Internal spuriiBelow -100 dBm, typ. less than -115 dBm of equiv. antenna input
RSSI accuracy2 dB
RSSI sensitivity-140 dBm
Processing and recording bandwidth20 kHz - 4 MHz (selectable in 24 steps)
Demodulator processing bandwidth20 kHz - 320 kHz (selectable in 13 steps)
Demodulation bandwidth (selectivity)1 Hz - 320 kHz (continuously variable in 1 Hz steps within current demodulator processing bandwidth)
Spectrum analyzer16 MHz wide real-time spectrum, 1.5 kHz resolution bandwidth
ADC16 bit, 100 MSPS
Search speedUp to 1 GHz/s
Scanning speedUp to 80,000 ch/s (12.5 kHz channel separation)

AM: 30% mod., 10 dB S+N/N

SSB, CW: 10 dB S+N/N

FM: 3 kHz dev., 12 dB SINAD

FMW: 50 kHz dev., 12 dB SINAD

Mode< 50 MHz typ.
(@ 14 MHz)
> 50 MHz (preamp off) typ.
(@ 800 MHz)
> 50 MHz (preamp on) typ.
(@ 800 MHz)
AM-102 dBm
(1.8 &#181;V)
-103 dBm
(1.6 &#181;V)
-110 dBm
(0.7 &#181;V)
SSB-114 dBm
(0.45 &#181;V)
-114 dBm
(0.45 &#181;V)
-123 dBm
(0.16 &#181;V)
CW-122 dBm
(0.18 &#181;V)
-122 dBm
(0.18 &#181;V)
-130 dBm
(0.07 &#181;V)
FM-112 dBm
(0.56 &#181;V)
-112 dBm
(0.56 &#181;V)
-120 dBm
(0.22 &#181;V)
FMWnot specified-106 dBm
(1.1 &#181;V)
-113 dBm
(0.5 &#181;V)
Note: Below 500 kHz and above 3.3 GHz, the sensitivity gradually drops.
Typical figures (CW, 500 Hz BW, 10 dB S+N/N) are as follows:
500 kHz   -121 dBm
200 kHz   -118 dBm
100 kHz   -112 dBm
50 kHz   -106 dBm
20 kHz   -98 dBm
10 kHz   -90 dBm
3.5 GHz   -115 dBm
3.4 GHz   -118 dBm
3.3 GHz   -122 dBm
Intermediate frequenciesIF1: 3910 MHz (BW=30 MHz)
IF2: 70 MHz (BW=16 MHz)
Tuning accuracy0.5 ppm @ 25 &#176; C
Tuning stability0.5 ppm (0 to 50&#176; C)
Antenna input50 ohm (SMA connector)

Specifications are subject to change without notice due to continuous product development and improvement.

download brochure WR-G39DDC