Note: This model has been superseded.
Please consider our suggested replacement model.


The WiNRADiO WR-G313i is a software-defined high-performance HF receiver (9 kHz to 30 MHz, optionally extendable to 180 MHz) on a PCI card.

This receiver is intended for government, military, security, surveillance, broadcast monitoring, industrial and demanding consumer applications.

WiNRADiO WR-G313 receiver in use

The receiver is extremely sensitive, making it possible to comfortably read CW signals under 0.05 µV input levels, yet featuring a respectable 95 dB dynamic range making the receiver resistant to strong signal overload. The high sensitivity is also matched by that of the S-meter: The fully calibrated S-meter shows the received signal levels in dBm, µV or S-units, down to the ‑140 dBm noise floor.

The hardware and software package consists of the receiver card, Windows-based software, a start-up antenna and a user's manual.


WiNRADiO WR-G313i PCI card

The PCI card plugs into an available slot of an IBM-compatible PC. Several receivers (as many as there are free PCI slots available) can be controlled by a single PC - an ideal solution for high-performance multi-channel automatic monitoring systems.

There is a single SMA antenna connector and an output line audio jack which can be used to connect the receiver output directly to a sound card line-input or an amplified speaker.

The receiver has its own on-board DSP, and does not rely on the PC sound card for its performance. As the DSP performs the final stage IF filtering and all demodulation, this receiver is entirely software-defined, which means that additional demodulation or decoding modes can be easily added by a mere software change. (For example, an optional DRM decoder/demodulator is also available.)

No cables or power supplies needed - no clutter on your desk. Every modern desktop computer can be converted into a powerful HF monitoring station with minimum fuss.



The WR-G313i software contains numerous advanced features, many tuning and scanning options, virtually unlimited memories and a rich on-line help facility:

WR-G313i front panel

There are numerous demodulation modes, continuously variable IF bandwidth 1 Hz to 15 kHz (in 1 Hz increments), a 20 kHz wide real-time spectrum analyzer with 16 Hz resolution, noise blanker and notch filter. There is also an integrated recorder, making it possible to instantly record and playback the received signal.

Apart from audio recording and playback, the receiver can also record an entire 20 kHz wide IF spectrum, making it possible to thoroughly analyze the received signal, and "re-receive" the same signal again and again with different IF filter bandwidths, notch filter, noise blanking or demodulator settings, to arrive at the best possible reception of weak or interference-prone transmissions.

In addition to the real-time narrow-band spectrum analyzer, there is also a wide-band spectrum analyzer which contains additional professional instrumentation facilities: the ability to display minimum and maximum spectrum sweeps, search for peaks, average spectra, save and print spectra, marker mode, etc.

Another useful feature, previously unavailable with receivers of this price class, is a test and measurement facility, performing measurements on the received signal including frequency accuracy, amplitude modulation depth, frequency deviation, THD (total harmonic distortion) and SINAD. An audio spectrum analyzer is also included, making it possible to observe the demodulated spectrum in real-time with a resolution of 5 Hz.

The unique research and education function makes it possible to explore interactive block diagrams of the software-defined demodulator, for each demodulation mode, and observe demodulation taking place on real-time signals using two spectrum analyzers and a vector voltmeter.

The Client/Server Option makes it possible to control the receiver remotely via LAN or Internet. The receiver may be located physically on the opposite side of the globe, but to the user it will appear as if it was connected locally.

WR-G313i Package

What's included?

The standard WR-G313i package includes:

 WR-G313i receiver card
 CD ROM with application software and user's guide
 Start-up antenna
 Audio lead
 BNC-to-SMA adapter


System requirements:

 PC with 500 MHz Pentium CPU or faster
 One free PCI slot
 Windows XP, Vista, Windows 7, 8 or 10

Interested? Please use our Rapid Response Form to register your interest in this product, or to request more information.

 Independent Reviews
 Detailed Technical Specifications
 Real-time Spectrum Analyzer
 Wide-band Spectrum Analyzer
 Hardware Options
 WaveBase 3
 Client/Server Option
 Advanced Digital Suite Option
 DRM Demodulator/Decoder
 WR-AX-05E Long Wire Antenna
 WR-LWA-0130 Antenna Adapter
 WR-CMC-30 Common-Mode Choke
 Third party developer's information
 Application Software Download
 Comparative Summary of WiNRADiO Receivers
 WiNRADiO Dealers
 Online ordering via