# USRP Transmit **URL:** \ **Category:** GNU Radio\ **Created:** [March 21, 2013, 9:56am UTC](https://www.ruby-forum.com/t/usrp-transmit/227606 "2013-03-21T09:56:39Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![mrashi12](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/e5b9ba/32.png) [@mrashi12](https://www.ruby-forum.com/u/mrashi12)\ **Post date:** [March 21, 2013, 9:56am UTC](https://www.ruby-forum.com/t/usrp-transmit/227606/1 "2013-03-21T09:56:39Z")
I am transmitting and receiving using the USRP and both Leds A and C on. How to check that i am correctly Transmitting and Receiving. and how to see the Transmitted and received Signal? ---
**Author:** ![mrashi12](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/e5b9ba/32.png) [@mrashi12](https://www.ruby-forum.com/u/mrashi12)\ **Post date:** [March 21, 2013, 2:17pm UTC](https://www.ruby-forum.com/t/usrp-transmit/227606/2 "2013-03-21T14:17:53Z")
On Thu, Mar 21, 2013 at 4:55 AM, Mohammed R. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)wrote: > I am transmitting and receiving using the USRP and both Leds A and C on. > How to check that i am correctly Transmitting and Receiving. and how to see > the Transmitted and received Signal? Do you have another device that can be used to receive or transmit? That’s really the only way to know for sure what your signal looks like. Another USRP perhaps? Or you could look into getting one of the RTL-SDR devices for cheap. Or my personal favorite cheap signal detector/debugger: > **[a $16 pocket spectrum analyzer](http://ossmann.blogspot.com/2010/03/16-pocket-spectrum-analyzer.html)** > > ShmooCon was, once again, a fantastic experience this year. One of many highlights of this year's event for me was hacking on some radio d... Tom ---
**Author:** ![mrashi12](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/e5b9ba/32.png) [@mrashi12](https://www.ruby-forum.com/u/mrashi12)\ **Post date:** [March 21, 2013, 2:23pm UTC](https://www.ruby-forum.com/t/usrp-transmit/227606/3 "2013-03-21T14:23:44Z")
My wife will demand a divorce when I start carrying such a pink “Hello Kitty” device with me 🙂 Is there a more serious looking version available? Ralph. > **[a $16 pocket spectrum analyzer](http://ossmann.blogspot.com/2010/03/16-pocket-spectrum-analyzer.html)** > > ShmooCon was, once again, a fantastic experience this year. One of many highlights of this year's event for me was hacking on some radio d... Tom ---
**Author:** ![mrashi12](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/e5b9ba/32.png) [@mrashi12](https://www.ruby-forum.com/u/mrashi12)\ **Post date:** [March 21, 2013, 2:52pm UTC](https://www.ruby-forum.com/t/usrp-transmit/227606/4 "2013-03-21T14:52:58Z")
Much nicer 🙂 My Swiss army knife in RF is a RTL2832/E4000 stick, the Hama nano DVB-T-Receiver. [http://dk5ras.dyndns.org/tmp/nano.jpg](http://dk5ras.dyndns.org/tmp/nano.jpg) - unplugged after taking a look at a LTE channel with it. It is SMALL, it is (unlike the other cheap sticks) almost perfectly shielded, when you unplug the MCX connector, then there is NOTHING left but internal spurious peaks… I like it that much that I even ordered a spare one, in case I fry again a RTL4000 tuner chip for unknown reason or simply lose the tiny little thing. Can’t repeat it often enough, hdsdr, sdr#, RTL2832, USRP1, gnuradio - this opens a whole new world for RF enthusiasts. We live in an exciting decade! Ralph. ---
**Author:** ![mrashi12](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/e5b9ba/32.png) [@mrashi12](https://www.ruby-forum.com/u/mrashi12)\ **Post date:** [March 21, 2013, 2:35pm UTC](https://www.ruby-forum.com/t/usrp-transmit/227606/5 "2013-03-21T14:35:26Z")
How about this: > **[Spectrum Analyzer Wedged Into A Cellphone](https://hackaday.com/2010/02/12/spectrum-analyzer-wedged-into-a-cellphone/)** > > \[Miguel A. Vallejo\] wanted a portable spectrum analyzer for the 2.4GHz ISM band. No problem, there’s modules for that are easy to interface with a microcontroller and LCD screen. But carrying… 🙂 My wife would get a serious case of the giggles if I used a pink spectrum analyzer. MB On Thu, Mar 21, 2013 at 02:23:43PM +0100, Ralph A. Schmid, dk5ras wrote: > My wife will demand a divorce when I start carrying such a pink “Hello Kitty” > device with me 🙂 Is there a more serious looking version available? > > Ralph. – Karlsruhe Institute of Technology (KIT) Communications Engineering Lab (CEL) Dipl.-Ing. Martin B. Research Associate Kaiserstraße 12 Building 05.01 76131 Karlsruhe Phone: +49 721 608-43790 Fax: +49 721 608-46071 www.cel.kit.edu KIT – University of the State of Baden-Württemberg and National Laboratory of the Helmholtz Association