by Fairwaves

The first ever truly embedded SDR

View all updates Aug 03, 2017

GRCon’17 and XTRX rev3 Ready for Prototyping

Planning to attend GRCon’17? Drop us a message if you want to meet, or just find us there to chat!

Meantime we’re working hard to produce XTRX rev3 prototypes by GRCon’17 and show some cool demos. No promises so far though.

Andrey has just finished 7th redesign of rev3 (I think 7th, I’ve lost count at some point) and we’re preparing files for prototype manufacturing. I thought we’re done when Andey finished the 6th redesign, but then Andrey and Sergey found that XTRX is dissipating almost 1W of power at a linear converter that powers the analog part of XTRX. And 1 W is a too big part of the 2.5 W power budget to be ignored. Then they found why XTRX was not working well at high temperatures at high frequencies – LMS7002M built-in LDO degrades with temperature and doesn’t provide enough current to run the chip. So Andrey and Sergey decided to fix this with a small change in the XTRX power system. Then the change became bigger, and bigger, and bigger, since there isn’t any end to perfection. In the end they’ve changed the whole power supply of XTRX (about 20% of the components). And now there is almost no space left on the board.

As the result XTRX will be _much_ more power efficient and stable. And it will have “deep sleep” mode when the whole board shuts down and consumes almost no power. Exact figures will be known when we get the prototypes from the fab. Stay tuned.

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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


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