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The v4.1a software version allows connecting to remote Perseus receivers through any TCP/IP connection*.

Release 4.1a was released to address USB 3.0 compatibility issues and refine Windows 8 support. For the latest advices and support, please refer to the Perseus support group hosted on Yahoo.

NOTE (*) The minimum required upload bandwidth on the server side is 80 kbps. Three profiles were defined to simplify server setup (GPRS, ADSL, LAN).  Operation behind a router is possible after setting up the correct port forwarding rules.

For more information about the client-server architecture and setup, please refer to the Client-Server Reference PDF file included in the 4.1a zipped file.

Download the Perseus Software v4.1a

(19 June 2013 - 7.71 MB .zip file)

Release notes are included in the zipped package. This release works as a fully featured demo version for 30 days, for those who don't own a Perseus receiver.


This is the software version distributed by Microtelecom up to 31 August 2015 along the Perseus receiver and it never expires. The software options indicated by the initial dialog of the application are no more for sale as they will be included in the new V5 software version. When prompted by the Software Options Dialog check the box "Don't show me this dialog again" and you won't be bothered by them anymore.


NEW FM+ Software v1.1a (8 August 2015 - 2.5 MB .zip file)
This software version of the FM decoder software supports W7/W8.1/W10 platforms with mixed USB3.0/USB2.0 ports.
The software does not require a registration anymore and is provided for free on as is basis.
Please read the readme.txt file provided with the distribution for more.

ExtIO DLL for Studio1 - Winrad
(18 July 2012 - 1.6 MB .zip file)
Updated with latest FPGA cores and DLL (includes support for all Perseus output sampling rates).


Are you interested in processing the wideband zero-IF data stream offered by the Perseus receiver and control the receiver with your own application software?

Microtelecom has developed a simple yet powerful SDR Development Toolkit (SDRDK) which allows you to interface your software to the Perseus receiver hardware directly.

The Microtelecom SDRDK includes C language APIs, control DLLs for Windows, FPGA configuration files images and a tutorial console application which explains step by step how to interface to the Perseus receiver and get out of it the data you're interested in.The SDRDK compiles with Microsoft Visual Studio C++ 5.0 or higher on Microsoft Windows XP and Windows Vista.

Please note that the SDRDK does not contain any digital signal processing code, either in source form or executable. The SDRDK is not meant for filtering, demodulating or any other signal processing task. It simply provides you the means to control the Perseus receiver and get the wideband zero-IF data stream as it comes out of the receiver digital down converter (24 bit IQ samples, from 125 kS/s to 2 MS/s).

The development toolkit is offered for free to those who request it under the terms of the Microtelecom SDRDK Licensing Agreement.

 Download the Perseus SDRDK

Once the Microtelecom SDRDK Licensing agreement conditions are accepted you will receive a personal notification e-mail with a link to the SDRDK download page).
Please note that this version of the SDK is not yet compliant with new USB3.0/USB2.0 ports and can be used only on systems equipped with true USB2.0 ports.
An updated version of the SDK will be available after the publication ot the Perseus V5 software.


(1 Jan. 2009 - 3 MB .pdf file)

Japanese (Short Guide)
(1 Jan. 2009 - 0.5 MB .pdf file)

(24 Mar. 2009 - 3 MB .pdf file)

(10 Dec. 2008 - 3 MB .pdf file)

(11 Feb. 2013 - 1.6 MB .pdf file)
courtesy of Jari Perkiömäki, OH6BG

(Sept. 2014 - Ver. 4.X  - 6.7 MB .pdf file)

CI-V Interface reference
(30 November 2012 - 309 kB .pdf file)

The driver package includes support for the following operating systems:
  • Windows 7
  • Windows 8/8.1
  • Windows 10
Download the Perseus WinUsb drivers
(27 September 2016)

After the download unzip the archive in a folder of your hard disk and read the installation instructions to install the Perseus WinUsb drivers accordingly to the Microsoft Windows operating system version you are using.

You dont need to install this driver package if your Perseus receiver is already detected by your operating system.


If your Perseus v.4.1a version does not works on modern platforms equipped with USB3.0/USB2.0 ports it is suggested to replace the perseususb.dll library contained in the v4.1a package with the new library here provided.

Download the archive, unzip it on your hard disk and overwrite the perseususb.dll file with the new version.

When the Perseus v4.1 software starts click on the Microtelecom icon to open the software settings and verify that the the DLL version listed in the dialog has a version number 3.9

Download the perseususb.dll update for USB3.0 systems
(27 September 2016 - 46 kB .zip file)


This is a alpha-release of the V5 Perseus software. Click on the image above to expand it.

V5 software main features:
  • Resizable application window up to a HDMI screen resolution of 2560x1400 pixels
  • New, faster Digital Signal Processing engine
  • Much faster spectrum/waterfal screen refresh rate up to 120 lines/second
  • Much improved waterfall quality
  • Dynamic spectrum averaging for a more comfortable spectral view
  • Revised tuning options with better man-machine interface
  • Full support for XP/W7/W8.1/W10 Microsoft Operating Systems
  • Future support for split spectrum/waterfall display operations.
The V5 archive includes the client and the server Perseus sofware along with a demonstrative version which does not require any registration.
The demonstrative V5 software is completely free but have some limitations:
  • The tuning range in real-time mode is limited to the frequencise between  13.6 MHz and 14.2 MHz.
  • Software settings are not saved among different sessions
  • Network mode is disabled
  • Zoom function is disabled
The license file for the full V5 Perseus software is available at the price of 59 Euro. To order it please run the Perseus application and follow the instructions (please note that V5 software licences are locked to the receiver serial number)
Licenses are free for Perseus units sold by Microtelecom s.r.l. after October 1, 2015.

Download the Perseus V5 Software
(17 November 2015 - 5 MB .zip file)

Save the the archive on your hard-disk, unzip it and run.
Minimum system requirements and basic release notes are listed in the README.TXT file contained in the distribution archive.


As some of the tuning methods of this software release have been changed from previous versions and new ones have been added, plese refer to this quick guide to learn all of the ways you can tune a signal with the new Perseus V5 software edition.

Download the Perseus V5 Quick Tuning Guide
(11 August 2015 - ,pdf file)