[Discuss-gnuradio] GRC qtgui_sink "Clicked Freq Variable" not working.
Hello, this is my first post to the mailing list! Thanks in advance for taking the time to help me out! I'm using gnuradio v3.7.6git and Ubuntu 12.04 I am having issues with the "Clicked Freq Variable" option in the qtgui_sink block in GRC. If I understand this correctly, it should basically act just as the "Freq Set Varname" option of the WX GUI FFT Sink. The qtgui_sink block doesn't seem to be changing the variable that I put into this option when I click or double click on the frequency graph. I've attached a small GRC flowgraph to illustrate the issue. I would expect the label to change every time that I click on the frequency graph. I've looked into the source code a little bit and done some debugging and I've found that it doesn't seem like the plotPointSelected signal is even being emitted, or if it is, it isn't being captured and the appropriate callback is not being called to update the variable. I'm at a loss now. Any help would be greatly appreciated! Thank you all for your time! foo.grc Description: application/gnuradio-grc ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] GRC qtgui_sink "Clicked Freq Variable" not working.
Thanks for the reply! I looked at the gtqui_freq_sink_X blocks and they do not offer this functionality in my version of gnuradio. Must have been put in a newer version of gnuradio. On Sun, Oct 4, 2015 at 5:10 AM Tom Rondeau wrote: > On Mon, Sep 28, 2015 at 11:12 PM, Jeremy Butler > wrote: > >> Hello, this is my first post to the mailing list! Thanks in advance for >> taking the time to help me out! >> >> I'm using gnuradio v3.7.6git and Ubuntu 12.04 >> >> I am having issues with the "Clicked Freq Variable" option in the >> qtgui_sink block in GRC. If I understand this correctly, it should >> basically act just as the "Freq Set Varname" option of the WX GUI FFT Sink. >> >> The qtgui_sink block doesn't seem to be changing the variable that I put >> into this option when I click or double click on the frequency graph. >> >> I've attached a small GRC flowgraph to illustrate the issue. I would >> expect the label to change every time that I click on the frequency graph. >> >> I've looked into the source code a little bit and done some debugging and >> I've found that it doesn't seem like the plotPointSelected signal is even >> being emitted, or if it is, it isn't being captured and the appropriate >> callback is not being called to update the variable. >> >> I'm at a loss now. Any help would be greatly appreciated! >> >> Thank you all for your time! >> > > Jeremy, > > The qtgui_sink_X blocks don't have this functionality built in. Instead, > you'll want to use the qtgui_freq_sink_X blocks for this purpose. > > The general qtgui_sink blocks need a lot of rework to pull in the new > features that are currently available in the other stand-alone blocks. > > Tom > > ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Audio bandwidth
Just throwing this out there, but your low pass filter has a cutoff frequency of 7.5 kHz. It looks like you are trying to use the Slider with the ID "width" to change the cutoff frequency of the low pass filter. It doesn't look like it's actually connected to your low pass filter though because the default value of the slider doesn't match the cutoff frequency value of the low pass filter. It would be easier if you attached your .grc file instead of just a picture. On Fri, Oct 16, 2015 at 12:30 PM Hoang Nguyen Tran wrote: > Does anyone have the experience on this ? > I can receive and decode 1200 bps signal, but still no luck with 9600 bps > signal :( > > On Thu, Oct 15, 2015 at 2:04 PM, Hoang Nguyen Tran > wrote: > >> Hi, >> Regarding to this problem, I tried to use UDP sink to replace Audio sink >> or Wave file sink, then try to receive audio in on another computer with >> decoding software by VLC. >> >> When I run the VLC with command : vlc --demux=rawaud --rawaud-channels=1 >> --rawaud-samplerate=48000 udp://@:7355 >> I was able to here the sound coming from VLC, however, the sound was >> choppy, the same with audio under-run. Does anyone have explanation for >> this ? >> >> I set the UDP sink with these parameters: >> >> Payload size :1500 >> Send NULL Pkt as EOF : True >> Vec length : 1 >> >> Thanks a lot, >> Hoang >> >> On Thu, Oct 15, 2015 at 10:53 AM, Hoang Nguyen Tran >> wrote: >> >>> Hi Marcus, >>> >>> I put a variable for that, and usually I put in 24kHz for signal >>> bandwidth in Low Pass filter. >>> >>> >>> >>> >>> On Thu, Oct 15, 2015 at 10:46 AM, Marcus Müller < >>> marcus.muel...@ettus.com> wrote: >>> Hi Hoang, are you sure you want to reduce the FM signal bandwidth to 6kHz in the Low Pass filter? Best regards, Marcus On 10/15/2015 04:38 PM, Hoang Nguyen Tran wrote: Hi Tom, Thank for replying, Below is my narrow band fm receiver base on nbfm rx from http://www.oz9aec.net/ I was able to receive and decode with ISS and other sat with 1200 baud rate, but did not success with 9600 baud rate. On Thu, Oct 15, 2015 at 10:11 AM, Tom Rondeau wrote: > On Wed, Oct 14, 2015 at 2:47 PM, Hoang Nguyen Tran < > hoangn...@gmail.com> wrote: > >> Hi all, >> >> I have question related to audio bandwidth cutoff. >> Yesterday, I received very good signal from STRaND satellite 9600 >> bps, FSK modulation. >> I used audio sink to record the signal then used it for decoding. >> However, I was unable to decode signal, then I ask some another ham >> radio expert and he said because of my audio bandwidth cut off for some >> unknown reason is 3000 so it is unable to decode. >> >> Do anyone know why and how can I change the audio bandwidth cut off ? >> I used the normal WAV file sink with set up: sample rate 48000, N >> channels : 1 and Bít per sample 16. >> Thank for your time and I appreciate any comment. >> >> Best regards, >> Hoang >> > > Hoang, > > It's nearly impossible to help you here since you've given us no > information on your setup. Yes, sample rates and filter bandwidths matter > in this. You've likely got some numbers in your flowgraph wrong. > > Tom > > -- -HoangNT- PhoneNo : +841654248782 Skype : hoangastro FB : https://www.facebook.com/kenshin.rorouni ___ Discuss-gnuradio mailing listDiscuss-gnuradio@gnu.orghttps://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >>> >>> -- >>> -HoangNT- >>> PhoneNo : +841654248782 >>> Skype : hoangastro >>> FB : https://www.facebook.com/kenshin.rorouni >>> >> >> >> >> -- >> -HoangNT- >> PhoneNo : +841654248782 >> Skype : hoangastro >> FB : https://www.facebook.com/kenshin.rorouni >> > > > > -- > -HoangNT- > PhoneNo : +841654248782 > Skype : hoangastro > FB : https://www.facebook.com/kenshin.rorouni > ___ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Saving data
Hello Pedro. Have a look at the File Sink block. On Tue, Oct 20, 2015 at 2:34 PM Pedro Gabriel Adami < pedrogabriel.ad...@gmail.com> wrote: > Dear all, > > I'm developing a project based in gnuradio and I have to save some data > that I get at the end of my flowgraph. I'm using a Number Sink to see the > value of the sum I'm making, and I need to analyse these numbers. > Does anyone know how to storage/save this kind of information? It would be > great if these numbers were saved in a text file (.txt). Anyway, now I just > need to save them (no matter the way), so I can analyse them e take my > conclusions. > > Thanks a lot. > > Cheers, > Pedro Gabriel Adami > Graduando do 4º período de Engenharia de Controle e Automação no Inatel > ___ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
