WR-G33EM Marine Receiver

Note: This product has been superseded.


The WiNRADiO WR-G33EM is a high-performance receiver specially developed for marine applications. It covers the HF frequency range to 30 MHz, and contains a number of decoding facilities including HF Fax, NAVTEX, DSC and TELEX, as well as classical AM, SSB and CW radio modes.

A GPS option is also available which integrates the receiver with a high-resolution global mapping facility.

WiNRADiO WR-G33EM receiver in use

This high-performance marine receiver is extremely sensitive and optimized to work with relatively short antennas, typically found in a marine environment, yet featuring a respectable dynamic range making the receiver resistant to strong signal overload.

WiNRADiO WR-G313e receiver

The receiver comes in a small enclosure which connects to an IBM-compatible PC (desktop or laptop) via the supplied USB cable. An external antenna connects to the receiver.

 Frequency range 9kHz to 30MHz
 AM, LSB, USB, DSB, CW conventional modes
 DSC, HF Fax, NAVTEX, TELEX marine modes
 High sensitivity
 Excellent dynamic range
 Real-time spectrum analyzer
 Spot-on tuning in 1Hz steps
 Continuously variable bandwidth
 Automatic scheduling, recording and playback
 GPS option

The WiNRADiO G33EM: A ground-breaking marine receiver that will surely amaze you.


Software Defined Radio

The WR-G33EM is the first Software Defined Radio specifically designed for marine applications.

A Software Defined Radio (SDR) is one where most of the radio signal processing is performed in software, using digital signal processing methods, rather than using traditional hardware parts, resistors, capacitors, diodes, etc. The received signal is digitized early in the signal processing chain, and any further processing, demodulation and decoding of the digitized signal is then performed entirely in software.

There are many advantages to this approach, especially the flexibility of demodulation modes - new modes can be added easily by simply upgrading software. The G33EM also performs better than a comparable conventional receiver, thanks to advanced signal processing techniques which make it possible to implement sharper selectivity filters, and more accurate demodulators and decoders than conventional hardware.

The performance of a Software Defined Radio receiver is also more consistent, stable and reliable because component tolerances and aging do not play such an important role as in a conventional receiver.

And finally, the G33EM receiver offers far more features and facilities than a conventional receiver. For example, the real-time spectrum analyzer with continuously variable bandwidth, graphical notch filter and IF recording are some of the many features which were previously unavailable on a conventional marine radio, in particular at such an affordable price level.

Classical radio modes Click here to learn more about G33EM classical modes (AM, SSB, CW).
DSC mode Click here to learn more about G33EM DSC mode.
NAVTEX mode Click here to learn more about G33EM NAVTEX mode.
FAX mode Click here to learn more about G33EM FAX mode.
TELEX mode Click here to learn more about G33EM TELEX mode.
WR-G33em Package

What's included?

The standard WR-G33EM package includes:

 WR-G33EM receiver
 Application software
 Comprehensive user's manual
 Start-up test antenna
 BNC-to-SMA adapter
 USB interface cable
 Low-noise AC/DC linear power supply
 Fused fly lead for alternative DC power


System requirements:

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

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