# USRP/SDR with Gnuradio **URL:** \ **Category:** GNU Radio\ **Created:** [August 6, 2015, 9:09pm UTC](https://www.ruby-forum.com/t/usrp-sdr-with-gnuradio/242911 "2015-08-06T21:09:16Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Rafa\_F](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/958977/32.png) [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Post date:** [August 6, 2015, 9:09pm UTC](https://www.ruby-forum.com/t/usrp-sdr-with-gnuradio/242911/1 "2015-08-06T21:09:16Z")
Hello, everybody! I’m developing a project related to Cognitive Radio (an energy detector, more specifically) and I have to buy a USRP or SDR board to continue developing it. For now, I just need a simple and basic board that has a transmitter port and a receiver one and that is possible to use with Gnuradio. Only this! I don’t have experience on buying this stuff so I hope you can help me. The board can’t be expensive, because my lab has limited resources. The processor it’s not important for me (unless there is some restriction to use with Gnuradio). If you can help me sending some websites, models or tips of good boards (but not so expensive) it would be great. Cheers, Thank you a lot. ---
**Author:** ![pgpab](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/13edae/32.png) [@pgpab](https://www.ruby-forum.com/u/pgpab)\ **Post date:** [August 6, 2015, 9:30pm UTC](https://www.ruby-forum.com/t/usrp-sdr-with-gnuradio/242911/2 "2015-08-06T21:30:13Z")
On Thu, Aug 6, 2015 at 3:09 PM, Antonny C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > The board can’t be expensive, because my lab has limited resources. > Posted via [http://www.ruby-forum.com/](http://www.ruby-forum.com/). Welcome to GNU Radio. First of all, please subscribe to the mailing list ( [http://gnuradio.org/redmine/projects/gnuradio/wiki/MailingLists](http://gnuradio.org/redmine/projects/gnuradio/wiki/MailingLists)) and use your actual e-mail account rather than [ruby-forum.com](http://ruby-forum.com). Off the top of my head here’s a list of “affordable” vendors with GNU Radio support (in alphabetical order) that transmit: - Ettus ([http://www.ettus.com/](http://www.ettus.com/)) - Fairwaves UmTRX ([http://shop.fairwaves.co/accessories-and-diy](http://shop.fairwaves.co/accessories-and-diy)) - Greatt Scott Gadgets Hackrf ([HackRF Product Line - Great Scott Gadgets](https://greatscottgadgets.com/hackrf/)) - Nuand Bladerf ([http://nuand.com/](http://nuand.com/)) If you can drop the transmit requirement then also check out RTL-SDR dongles (nooelec and others). You’re going to have to do your own research to figure out what to buy. -Nathan PS - there’s way more companies than this in this particular market, but they are usually more specialized and more expensive. ---
**Author:** ![pgpab](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/13edae/32.png) [@pgpab](https://www.ruby-forum.com/u/pgpab)\ **Post date:** [August 6, 2015, 10:25pm UTC](https://www.ruby-forum.com/t/usrp-sdr-with-gnuradio/242911/3 "2015-08-06T22:25:44Z")
Hello, Nathan! Thank you for helping me. I took a look, but it’s still expensive. If I find only the board to buy (like BladeRF), it will be fine for me. It’s been a little difficult… Please, if you know more reliable companies tell me. Thanks a lot. Cheers, Antony ---
**Author:** ![pgpab](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/13edae/32.png) [@pgpab](https://www.ruby-forum.com/u/pgpab)\ **Post date:** [August 6, 2015, 10:54pm UTC](https://www.ruby-forum.com/t/usrp-sdr-with-gnuradio/242911/4 "2015-08-06T22:54:21Z")
Hi Antony, really, get away from ruby-forum. It’s mixing up replying order already now, where your thread has had only two emails. Really, as Nathan said, sign up directly – it’s so much more useable than ruby-forum. We really don’t mind if you use a gibberish email address, it’s just that ruby-forum makes it hard to follow discussions properly. Best regards, Marcus ---
**Author:** ![pgpab](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/13edae/32.png) [@pgpab](https://www.ruby-forum.com/u/pgpab)\ **Post date:** [August 6, 2015, 10:46pm UTC](https://www.ruby-forum.com/t/usrp-sdr-with-gnuradio/242911/5 "2015-08-06T22:46:45Z")
Hello Antonny: Your requirements are not very specific, but I think that the B200 should meet your requirements for doing energy detection for Cognitive Radio. It works well with GNU Radio, has transmit and receive ports, and is full-duplex. Please let me know if you have any further questions. > **[USRP B200 USB Software Defined Radio (SDR) - Ettus Research](https://www.ettus.com/all-products/UB200-KIT/)** > > USRP B200 SDR: Fully integrated, low-cost, single-board software defined radio with continuous frequency coverage from 70 MHz – 6 GHz and 56MHz of bandwidth. –Neel