Poldhu radio club in Cornwall, nr. England
img31m AM
AM stations in the 31m broadcast band
Inside the bladeRF transceiver from NUAND
imgLog Periodic
A log periodic antenna in the Swiss alps
The ELAD FDM-DUO, beautiful Italian styling
Introduction is a Windows console for Software Defined Radio (SDR) receivers and transceivers. Designed for the commercial, government, amateur radio and short-wave listener communities, the software provides a powerful interface for all SDR users. is working very closely with major hardware manufacturers to bring you the best SDR experience available today.

The software is being continually developed with new features added on a regular basis. Licenced radio amateurs and shortwave listeners do not need a licence to use this software.

Visit the developer's own website on for more free software.


This software supports radio from most major manufacturers, simple soundcard radios such as SoftRocks and the excellent FUNcube Dongles. What are you waiting for?

  • Clean user interface, no unnecessary features.
  • Client / server design - locate your SDR receiver anywhere in the world where's an internet connection, network bandwidth for acceptable reception can be as low as 45 kbps.
  • Low CPU usage, acheived by use of Intel's IPP library, highly efficient GDI+ programming and years of experience.
  • Licenced - to protect the codebase.
  • Multi-monitor support.

For a more complete description click here.




Licencing & Legal


This software is available free of charge only for hobby users such as  radio amateurs and shortwave enthusiasts. (The development is funded by the commercial licencees.)


Commercial and government users must either purchase a licence from TSS Inc. or have written permission from The commercial version of this software is compiled from a secure codebase, supported 365 x 24 x 7 by a team of SIGINT professionals and in use in hostile and very challenging environments.

  • Support: 365 x 24 x 7
  • Guarantee: yes
  • Future-proof: yes
  • Software expires: no
  • Training available: on-site anywhere
  • Source available: via escrow in a working Windows Hyper-V environment

System Requirements

This software is designed for Windows on the x86 hardware only, Windows on the Raspberry Pi is not supported. Although the software runs on Core 2 Duo systems with 32-bit Windows XP, the recommended minimum system configuration for a new hardware acquisition is:

  • Windows 7 64-bit,
  • Intel I3,
  • 8GB RAM.

If you are buying a video card (GPU) then NVIDIA is recommended as the software makes use of the CUDA interface for CPU-intensive computation if such a card is available. Other manufacturers may be supported at a later date.

To ensure support for SDR solutions coming to market over the next few years at least a third-generation CPU such as i5-3570 or i7-3770 should be used as these new SDR receivers will offer bandwidths of 20MHz or more which in turn require significant processing power and internal bandwidth. 

Newer computers generally use less power; have better processing and often a lower footprint.

  • DX Cluster
  • Satellites
  • WWW Servers
  • Developer

Here is a full DX cluster, just click on the image below to display the cluster in a new browser window.


The console has a full satellite tracking module which provides correct Doppler correction of any satellite.

Use the website to try radios without buying your own:

  • Full information on,
  • All features of the software are available,
  • Simple to use,
  • Discover the whole world.

Visit the developer's own website where you will find more free software and photos you will not want to hang on your wall.

Key Features

This is a feature-rich program suite, some of the essential key features desired by SDR users are:

6 receivers (VFOs)
SSB, CW, AM, FM, FM-Stereo
WASAPI & ASIO audio support
Full DSP options
Remote hardware support
Recording and playback of base (IQ) data
Digital mode display (PSK, RTTY)
User-selectable colour palette
Spectrum scale in dBm, dBµV and S-Units
Unlimited Favourites
Quick memories

Very hungry dog looking for squirrels

Please donate to help with the considerable costs: hardware, lots and lots of it, software, sadly not free (Windows, Visual Studio, Intel IPP, CodeJock, ...).

And then there's the dog food! So if you like the SDR software I write please consider a donation, at least to stop my dog from getting too hungry.


£  PayPal      $  PayPal        PayPal


Watch the software in action on the Videos page. More recordings are available on the YouTube channel. There are  recordings of real amateur enthusiasts with various radios, the recordings made from a variety of locations using a NetSDR and active antenna.

The YouTube channel contains many more interesting recordings featuring the good, the bad and sometimes the very ugly.


HF Radio Integration

Of course you can integrate an HF transceiver with an SDR receiver to create the ultimate solution in terms of cost effectiveness, integration and system flexibility.

By using a standard transceiver you have the advantage of a 'real radio', by adding an SDR receiver you have not only the ultimate bandscope but also a receiver which out-performs almost any other receiver! 

You can buy an SDR receiver such as the SDR-IQ from RFspace plus a PC bundle from your local store for less than the cost of most external bandscopes.