The USB IDs of Nottingham Scientific’s GNSS SDR Frontends are the following:

  • fffe:0100 Selecta
  • fffe:0020 Primo II

GNU Radio includes this mysterious gr-msdd6000 component. MSDD6000 is a 30MHz-6GHz RF frontend built by Softronics Ltd and sold by Midwest Microwave Solutions Inc.

If you compile GNU Radio 3.3.0 from the tarball with GCC 4.5, it will fail in usrp2/host/lib with the error cannot convert ‘int*’ to ‘usrp2::usrp2*’ in initialization.

This has been fixed in the git master tree, but the workaround is in the following simple patch:

Ubuntu includes Gnuradio Companion (GRC) 3.2.2 since Ubuntu 10.04. The included version has a small bug with the GRC crashing when trying to load its preferences, which makes it unusable (the error message is KeyError: ‘options’). A bug report has been opened; in the meantime, a workaround can be used:

touch ~/.gnuradio/config.conf
cat /etc/gnuradio/conf.d/grc.conf >> ~/.gnuradio/config.conf

A GNU Radio Conference is being organized: September 14-15-16, 2011 in Philadelphia. Read more

Two interesting discussions are taking place these days on the discuss-gnuradio mailing list: Why Isn’t GNU Radio Used More? and How can we make GNU Radio better?


Ettus Research is proud to announce that the SBX transceiver
daughterboard is now available for purchase.  The SBX has the following
performance characteristics:

 - 400 MHz to 4.4 GHz frequency coverage
 - +16 to +20 dBm TX output power, with 32dB of power control range
 - 0 dBm IIP3 on Receive
 - 5-7 dB NF below 3 GHz, 7-10 dB NF between 3 and 4 GHz, 10-13 dB NF
between 4 and 4.4 GHz.
 - Full duplex capable
 - Fully supported by the UHD driver system
 - Works with the entire USRP family (*)

(*) USRP1 systems with serial number lower than 500 will need a
modification to work with the SBX.  All other USRP1, USRP2, N200, N210,
E100, and E110 systems will work without modification, as long as you
are using the UHD drivers.

You can see a picture of the SBX here:

The SBX costs $475 and can be purchased from our Orders web page:


Matt Ettus
President, Ettus Research LLC