by Fairwaves

The first ever truly embedded SDR

View all updates Feb 07, 2019

USB 3 Adapter Assembly Instructions & Other Community Contributions

It’s so exciting and motivating to see a community actively engaging with a product you’ve developed, helping each other resolve issues. Even more exciting is to see the quality and wide range of contributions we’re receiving. It’s beyond what we expected.

As an open source software project, we unsurprisingly have a live software issue tracker with people not only reporting bugs but also suggesting fixes and porting the software to various Linux distributions.

Some users write to us privately via our Contact Us form and often offer their help resolving issues with platforms we haven’t had access to ourselves. For example, credit for resolving the mystery of XTRX hanging some motherboards goes to a community member, with just a little guidance from our team.

If you don’t have strong software or hardware skills, you can contribute in the form of blog posts, documentation, and usability improvements. These contributions are no less noble than the ones in software and hardware.

For example, many backers found it challenging to assemble the USB 3 adaptor, which we ship disassembled if you order it separately. Assembly isn’t actually that complicated if you know how to do it. This easy-to-digest video was been contributed by another community member, Pavel Zhovner, to help fellow XTRX users:

Pavel has made some other great contributions for the USB 3 Adapter as well:

He also started adding support for XTRX into Universal Radio Hacker, which is easy-to-use software for investigating unknown wireless protocols. However, he’s stuck due to a lack of C/Python skills. Consider helping him and the rest of the community by contributing to this URH ticket if you’re proficient in C/Python.

Finally, to answer a common question: Yes, we’re planning a forum/wiki to make interaction among XTRX users easier and to facilitate further user contributions. Fixing issues and shipping orders have been taking priority so far, but we’ll get there. Stay tuned.

A warm thank you to everyone contributing and don’t be afraid to ask questions and to report issues!

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Product Choices



Get an XTRX Pro board. Does not include any cables, antennas, or adapter boards.


PCIe x2 Lite Adapter

This PCIe card securely holds an XTRX board (not included) so it can be used in a standard PCIe x4 slot. This adapter achieves the full 10 Gbit/s raw bus bandwidth and can be plugged into x4/x8/x16 PCIe slots. A six-pin JTAG connector makes it easy to program and debug the FPGA. Includes six SMA-to-U.FL cables, two screws for mounting your an XTRX board, and four 8 cm U.FL-to-U.FL cables.


4G/LTE External Antenna

From the Crowd Supply Basics project.

Abracon External Antennas exhibit low return loss characteristics, high gain, and Low Voltage Standing Ratio (VSWR). These external antennas are linearly polarized and come in a low profile package.


U.FL-to-SMA Cable

From the Crowd Supply Basics project.

A Hirose U.FL to SMA (jack) bulkhead straight connector with a 1.32 mm diameter cable. Less than -2 dB cable insertion loss up to 6 GHz. Both connectors are gold-plated brass and the cable conductor is silver-coated copper.


Active GPS Antenna

From the Crowd Supply Basics project.

A low-noise active GPS antenna suited for the GPS L1 band. Accepts 3-5V DC and outputs RF via an SMA(m) connector. Optional adhesive mounting.



We are a vertically integrated vendor of cellular equipment focused on the needs of emerging markets. We are developing, manufacturing, deploying, and operating turn-key cellular network solutions including radio equipment, towers, power and backhaul all the way to a core network and SS7 interconnect. Our team has been building software-defined radios and systems based on them since 2009 and is well known for its ClockTamer, UmTRX, and UmSITE products.

Alexander Chemeris


Sergey Kostanbaev

Software & Firmware Development

Andrey Sviyazov

Hardware Design

Albert Gardiner


Andrey Bakhmat


Andy Avtushenko


See Also

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