New USB drivers for macOS computers

After Apple updated their native requirements for drivers in Catalina and newer OS versions, the Silicon Labs team has been working hard to provide compatible drivers to comply with these requirements.

We are happy to announce these compatible USB drivers, version 6, are available and suitable for macOS latest OS versions. If you are using any third party software such as Touchstone or Vantage, or using our free VirtualMachine or equivalent solution with Parallels, you can now use RF Explorer Touch and other compatible software successfully in your macOS Catalina and newer versions.

For more details download latest drivers from and make sure to read the included release notes.

Known Issues and Limitations
This release includes the Macintosh OS driver for 64 bit
Macintosh computers running MacOS X 10.11 or greater.
For MacOS X 10.9 and 10.10, see the folder called "Legacy MacVCP Driver".
Driver Installation
Mount the DMG file and double click on
Silicon Labs VCP Driver.
On MacOS 10.13 and later, the installation of the driver may be blocked.
To unblock, open the System Preferences Security & Privacy pane and
unblock the system extension. See Apple Technical Note TN2459
"User-Approved Kernel Extension Loading" for more information.

RF Explorer Software and Firmware updates available

At RF Explorer we keep working hard, we send a big virtual hug to all our customers and colleagues being impacted by the current situation.

We are happy to provide the following free upgrades to all our client base:

RF Explorer for Windows

The new version 2.02 includes new support for WiFi channels at 5GHz for RF Explorer models working up to 6GHz. In addition to that, high resolution modes for PLUS models have been enhanced with higher speed sweep. If you need to work at more than 112pts standard sweep, you can now go up to 4096pts in a single sweep; this is also useful for CSV export with high resolution to external applications.

As an example below images show the same UHF captured data at different resolutions 112, 512 and 2048pts. At high resolution the RBW is lower and therefore the noise floor is much more sensitive

112 points standard resolution:

RFEWin 112pts 

512 points enhanced resolution:

RFEWin 512pts

2048 points high resolution:

RFEWin 2048pts

A detail of the Waterfall 3D in high resolution mode shows a much more detailed activity when compared to low resolution mode

Waterfall 2048pts

RF Explorer Touch

A new version 1.5 is available with plenty of new features:

  • Default mode is now 512 points sweep scan for PLUS models, making it easier to use the device in high resolution mode. Additional high resolution modes allow up to 4096pts.
  • New Waterfall 2D/3D graphical display (Not supported for Mac and Linux platforms)


  • New WiFi mode supporting 2.4GHz and 5GHz bands

wifi 5g

  • Added support for Limit Lines including alarm

config limit

  • New support customizable for Radio Standards

radio standard

  • Improved CSV file export, with advanced support for external applications such as WSN, IAS and WWB

config CSVfile

RF Explorer Spectrum Analyzer PLUS

The new firmware v3.18 includes a new advanced feature to allow recording and replaying sweeps in the spectrum analyzer internal memory. This new feature requires a separated license, more details at and user manual section Record / Play MENU (PLUS model only)

MenuRecord 2

RF Explorer Spectrum Analyzer Standard

The latest firmware v1.31 includes full support for 5GHz WiFi channels on models supporting 6GHz range.

In addition to these features all upgrades include bug and stability fixes.

License registration

Due to international regulatory requirements, as well as to provide first class support, our latest software upgrades require registration with a valid email. This is a simple step required only once per application.

  • We do not share email, personal information or sell information to third parties
  • All registering information is stored in offline, secure server
  • Internet connection is required for the registration step to complete

For more details on privacy policy please visit

New RF Explorer 6G Combo PLUS and 4G Combo PLUS

We are happy to introduce our two new members to the RF Explorer PLUS SLIM product family.


The new devices comes with an impressive frequency range, and all the PLUS family features including extended firmware future capabilities.

FrequencyScaleModels SLIM2

For specification details please visit:

And just in case you have a RF Explorer WSUB1G+ model, you can easily upgrade it to a 4G Combo+ or 6G Combo+ using the newly available expansion boards.


For full specifications visit:

All products are available at SeeedStudio and will be soon available in our distributor network:


Free tools from contributing users

Thanks to its open architecture and free open source software libraries, RF Explorer community has been very active for years offering custom solutions and tools, as well as adapting RF Explorer to the most surprising and challenging scenarios.

We introduce two of them today, which you may find very useful to have in your bag:

Wireless Microphone Analyzer

Developed by Bernd Konnerth, it has been refined and updated for sometime and its among the most popular tools in the Audio Pro community. It works in Windows, Mac and Linux.

Define and report Wireless Mic activity based on manufacturer channel names. For full discussion thread visit group link.

To download software and read instructions visit GITHUB project 

RF Explorer detailed scan phyton tool

Developed by mkupferman. This is a free command line solution for generating high-resolution scans with an RF Explorer, for use with coordination software like Shure Wireless Workbench. It works in Windows, Mac and Linux.

Download from GITHUB project