Re: [Discuss-gnuradio] Manipulating Waterfall Display

On Wed, Dec 7, 2011 at 1:28 PM, Robert Sorbello wrote: > Hey Everyone, > > I am new to GNURadio, and am at the beginning stages of learning > Python/C++, just to give you a frame of reference. I am currently > working on developing a RTI plot from data collected by the USRP2/USRP > N210. After w

[Discuss-gnuradio] underrun occurs when frequency changing

Dear all, I am trying to transmit a sequence at various frequencies on USRP N200 with LFTX. When I use the uhd.single_usrp_source.set_center_freq() to change the frequency then insert the the sequence as a message in the msgq buffer in another thread other than top_block, underrun occurs. The

Re: [Discuss-gnuradio] grc hardcoded to use xterm as a terminal emulator?

On 12/09/2011 02:42 PM, Timo Juhani Lindfors wrote: Hi, I just noticed that grc/python/Generator.py is hardcoded to use xterm as a terminal emulator. This is somewhat problematic [1] for me so I'd like to make it configurable, how would you rather see that done? Would adding a new option (like "

[Discuss-gnuradio] grc hardcoded to use xterm as a terminal emulator?

Hi, I just noticed that grc/python/Generator.py is hardcoded to use xterm as a terminal emulator. This is somewhat problematic [1] for me so I'd like to make it configurable, how would you rather see that done? Would adding a new option (like "no_gui_terminal_emulator") to the flowchart be too mes

Re: [Discuss-gnuradio] DPSK Block - Verifying Received Message

Thanks for adding to the discussion Paul. I should have made it clear that testing w/ the packets should have been independent from the "streaming" BER test. -John On 12/9/2011 9:48 AM, Paul M. Bendixen wrote: 2011/12/9 John Malsbury > Domenic, Wh

Re: [Discuss-gnuradio] DPSK Block - Verifying Received Message

2011/12/9 John Malsbury > Domenic, > > Whenever you are transferring data from a transmitter to a receiver it is > reasonable to use some sort of framing. If you want a quick test, use a > packet encoder and decoder on your transmitter and receiver, respectively. > This will packetize the data

[Discuss-gnuradio] BBN_80211 and UHD

Has anyone updated (or in the process of updating) the BBN_80211 or FTW_OFDM project for UHD support? If you could share them with me, that will save us the effort of duplicating your work and would be appreciated. Evan ___ Discuss-gnuradio mailing

Re: [Discuss-gnuradio] DPSK Block - Verifying Received Message

All excellent advice. I would also add that the gr-digital blocks already do a lot of this--framing and the like. They're a good place to get some clues even if you want to roll your own. -- Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org On Dec 9, 2011,

Re: [Discuss-gnuradio] Differences between USRP series

Seokseong Jeon, Your summary captures some of the differences between the USRP's. If you haven't already, take a look at the link below for more details. One thing to note is the USRP2 has been discontinued in favor of the N200/N210 series. http://www.ettus.com/faq If you are interested i

Re: [Discuss-gnuradio] DPSK Block - Verifying Received Message

Domenic, Whenever you are transferring data from a transmitter to a receiver it is reasonable to use some sort of framing. If you want a quick test, use a packet encoder and decoder on your transmitter and receiver, respectively. This will packetize the data and eliminate the continuous fl

[Discuss-gnuradio] PPM Signal Generation

Hi, is it possible to generate a PPM signal with GNU Radio + USRP2 with a bit rate of 1MBit/s? In particular, I want to transmit Mode-S replies which are modulated using PPM on 1090Mhz. In order to do so, I have to send 0.5µs wide pulses with time-shifts of 0 µs or 0.5 µs. The generation of

[Discuss-gnuradio] DPSK Block - Verifying Received Message

All, I was playing around with the DPSK block provided with GNU Radio. I was able to get my two USRPs talking to each other. I placed a file sink on the random source generator (set to transmit 10 random binary digits) and I'm able to see what was actually sent from that file (command: od -d f

Re: [Discuss-gnuradio] Gtk-WARNING when calling GUI

try: sudo apt-get install gtk2-engines-pixbuf On Fri, Dec 9, 2011 at 2:57 AM, Songsong Gee wrote: > Hello, > > Is there anyone seeing message like > Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap", > when calling any GUI window? > > I'm wondering that this message is cau