Re: [Discuss-gnuradio] IMSI Catcher Catcher?

There's a talk scheduled for DEFCON 24 called "Discovering and Triangulating Rogue Cell Towers" by Eric Escobar. https://defcon.org/html/defcon-24/dc-24-speakers.html About halfway down the page. Ron On 06/20/2016 07:21 PM, Ronald F. Guilmette wrote: In message

Re: [Discuss-gnuradio] IMSI Catcher Catcher?

On 21 Jun 2016 06:02, "Ronald F. Guilmette" wrote: > > > In message <182b157d-0f2c-b5b9-a07a-6812cccd2...@gmail.com>, > Cinaed Simson wrote: > > >Actually, you would need 2 HackRF One devices since they are half duplex > >- better to buy a bladerf

Re: [Discuss-gnuradio] IMSI Catcher Catcher?

In message <182b157d-0f2c-b5b9-a07a-6812cccd2...@gmail.com>, Cinaed Simson wrote: >Actually, you would need 2 HackRF One devices since they are half duplex >- better to buy a bladerf which is full duplex > > https://www.nuand.com > >If you want to buy a working

Re: [Discuss-gnuradio] Pythonic way of how to quit the process if U is displayed on output

Yeah, they're the obsolete style. Marcus Müller has been working on a patch to use the PMT messages, but some obnoxious maintainer[1] keeps finding issues with his code :) M [1] That's me. And we'll figure out those issues :) On 06/20/2016 04:29 PM, Dave NotTelling wrote: > Martin, > >

Re: [Discuss-gnuradio] IMSI Catcher Catcher?

Actually, you would need 2 HackRF One devices since they are half duplex - better to buy a bladerf which is full duplex https://www.nuand.com If you want to buy a working device, Alibaba has them for sale https://www.alibaba.com/product-detail/IMSI-catcher_135958750.html Harris Corp -

Re: [Discuss-gnuradio] Pythonic way of how to quit the process if U is displayed on output

Martin, Are there any examples of using that thing? I see that is uses messages, but they appear to be different from PMT messages. There are some examples that use a callback in the Python script generated by GRC, but I haven't ever been able to make one of those things work. It's very

Re: [Discuss-gnuradio] IMSI Catcher Catcher?

The GNU Radio community is always excited to see new applications for the platform. We have an excellent history of supporting new developers with interesting ideas who wish to work to turn those ideas into working software. --n On Mon, Jun 20, 2016 at 2:19 PM Ronald F. Guilmette

Re: [Discuss-gnuradio] Fwd: Re: Changing sample rate during runtime

Wait, are you using a single channel? That would be very weird if you saw that issue, that's true. Otherwise, do you get this when you're switching from low rates to really high rates, or regardless of the change? M On 06/17/2016 03:55 AM, olvhammar wrote: > > > Hi Martin, > > These are the

Re: [Discuss-gnuradio] Stream tag/Message passing loops

Ngai, we have an example for this in uhd_msg_tune.grc. Maybe that'll give you a clue. M On 06/14/2016 12:14 PM, Ngai-Han Liu wrote: > Hi there, > > I've been playing around with message passing and stream tags as a > beginner and am trying to allow the centre frequency of my USRP be > changed

Re: [Discuss-gnuradio] Pythonic way of how to quit the process if U is displayed on output

You can instantiate a USRP Async Msg block, and poll that for underruns. M On 06/17/2016 11:37 AM, Pavan Yedavalli wrote: > Hi, > > Sometimes my computer acts up and displays Us on the output, meaning > that there are underruns. However, this does not happen too often, but > is a pain when I am

[Discuss-gnuradio] Error when switching between QPSK and BPSK modulations

Hi, I am developing an application which changes between the QPSK and BPSK modulations based on the signal level. My transmitter path is set as follows. File source --> Packet Encoder --> Constellation modulator --.> USRP sink. Initially, the constellation of the 'Constellation modulator' is

Re: [Discuss-gnuradio] IMSI Catcher Catcher?

I just wanted to check again, one last time, before I exit this mailing list. I got no truly useful replies to my earlier post, so I just wanted to ask again... Nobody here either knows of, or has any particular interest in creating an off-the-shelf stingray detector (aka "IMSI Catcher

Re: [Discuss-gnuradio] Load Preset parameters in block

Maybe "defaults" is not the correct word to describe what I am trying to accomplish. The parameter values that pop up when you first drop the block down onto a flowgraph aren't necessarily important. But once the user double clicks the block to open the properties dialog, I want them to be

Re: [Discuss-gnuradio] Question about tagged_stream_block

It'll crash. If you know your packet size a priori, you can tell the scheduler to only provide multiples of a 1000 samples. Cheers, M On 06/20/2016 07:17 AM, bob wole wrote: > Hi, > My flowgraph contains a tagged_stream_block, B, and it has a > length_tag_key, say "pkt_len". Each packet has a

Re: [Discuss-gnuradio] Load Preset parameters in block

On 06/20/2016 03:17 PM, Mark Arlinghaus wrote: Hi Marcus, Thank you for your quick response. Sorry I wasn't clear. I'm actually talking about GRC construction. Once the code is running the parameters won't need to be changed. If we need to change the parameters, stopping the flowgraph is

Re: [Discuss-gnuradio] Audio underrun when using Audio Sink

Hi Kevin & Marcus, thank you for your answers. After a while of testing I've got interesting results. Firstly, even though it brought 100% CPU load on one core, the packet encoder is not a problem as the underruns also occured without it. Anyway, thank you for your suggestion, I'll certainly look

Re: [Discuss-gnuradio] Load Preset parameters in block

Hi Marcus, Thank you for your quick response. Sorry I wasn't clear. I'm actually talking about GRC construction. Once the code is running the parameters won't need to be changed. If we need to change the parameters, stopping the flowgraph is acceptable. It's really just meant to make the

Re: [Discuss-gnuradio] Load Preset parameters in block

On 06/20/2016 02:15 PM, Mark Arlinghaus wrote: Hello, Is there a way to load preset default parameters in a block. For example, I have a channel model block that takes several parameters, such as the doppler spread, path delays, path gains, doppler spectrum, etc., and I want to have presets

[Discuss-gnuradio] Load Preset parameters in block

Hello, Is there a way to load preset default parameters in a block. For example, I have a channel model block that takes several parameters, such as the doppler spread, path delays, path gains, doppler spectrum, etc., and I want to have presets that will auto-populate the parameters in the

Re: [Discuss-gnuradio] Software Defined Radio Academy 2016

Thanks, Markus! I have added this event to the website: http://gnuradio.org/events/ Cheers, Ben On Mon, Jun 20, 2016 at 7:38 AM, Markus Heller wrote: > Dear lists, > > the SDRA-2016 is right ahead! Next Saturday, 25.06. the SDRA will be > hosted as a subconference to the big

Re: [Discuss-gnuradio] [SOCIS] SCF

Hi Chris - For your Tensor Flow work, will you be using Tim O'Shea's OOT module? https://github.com/osh/gr-tf As part of your SOCIS, do you anticipate submitting any new blocks to that OOT project? Cheers, Ben On Sun, Jun 19, 2016 at 11:34 AM, Christopher Richardson <

[Discuss-gnuradio] GRCon 16 Latex Files

The website that should have the Latex template files for paper submission is broken, http://gnuradio.org/grcon-2016/papers/ If this cannot be quickly fixed, would someone send out the template files to the mailing list please? Thank you, Rich ___

Re: [Discuss-gnuradio] Re channel state information on rx_ofdm.grc

Thanks Marcus. Following up on the rx_time format, I notice from the link that the timestamp format is the same as uhd::time_spec_t . Therefore the timestamp printed out on a tag is of the form: full_seconds and a fractional_seconds. For e.g., I see: Offset: 667 Source: n/a Key: rx_time

Re: [Discuss-gnuradio] Control the transmission rate of TX_OFDM.grc

Replace the random source with message strobe-> random pdu generator->pdu to tagged stream Best regards, Marcus On 06/20/2016 04:31 PM, avinash kalyanaraman wrote: > Hi All, > > I am doing an OFDM transmission with tx_ofdm.grc and receiving it with > rx_ofdm.grc. I am using the Random Source of

[Discuss-gnuradio] Control the transmission rate of TX_OFDM.grc

Hi All, I am doing an OFDM transmission with tx_ofdm.grc and receiving it with rx_ofdm.grc. I am using the Random Source of the tx_ofdm unmodified. I want to be able to control the packet transmission rate - for e.g. 10 packets every 100ms. How can I modify the grc to be able to do this ?

[Discuss-gnuradio] Question about tagged_stream_block

Hi, My flowgraph contains a tagged_stream_block, B, and it has a length_tag_key, say "pkt_len". Each packet has a length of 1000 samples. The upstream block (A-->B) tags first sample with key "pkt_len" and value 1000 and then the upstream block tags sample number 901 with key "pkt_len" and value

Re: [Discuss-gnuradio] Audio underrun when using Audio Sink

Hi Paul, I'd like to second Kevin's notion that if anything is limiting your sample flow, it's the filter in the resampler. I don't know exactly what type of filter you chose, but I did the following (in python): from gnuradio import filter as gr_filter res =

Re: [Discuss-gnuradio] Displaying angle measurements with a nice GUI

Thank you all for your comments! and sorry for late response. I tried using WX DOA Compass, it seems exactly what i need. but i can't get it to work. I'm using "probe signal", "function probe", and the "WX DOA Compass" blocks. But when i execute the flow graph it's immediately terminate. Tried

[Discuss-gnuradio] Software Defined Radio Academy 2016

Dear lists, the SDRA-2016 is right ahead! Next Saturday, 25.06. the SDRA will be hosted as a subconference to the big HAMRADIO conference at Friedrichshafen trade fair. The SDRA will be hosted in the room "BERLIN" in the east part of the conference center and talks will start at 10:00 hrs.

Re: [Discuss-gnuradio] events, Friedrichshafen (Germany), Linuxwochen (Vienna)

Hello everybody, next Saturday 25.06. there will be a big "HAM NIGHT" party at Friedrichshafen's HAMRADIO fair. To those of you who attend the HAMRADIO fair: Right after the Software Defined Radio Academy (SDRA) will have ended at 1800 hrs, we will walk to the party together. The SDRA will be

[Discuss-gnuradio] Construction of BEC channel

Hi everyone, I'm a beginner on GNURadio and trying to simulate the Binary Symmetric Channel and Binary Erase Channel with AWGN. So I use a BPSK-mapper at the transmitter and relevant demapper at the receiver, then mapper-channel-demapper is equivalten to a BSC.