Re: [Clarification] Order of filter

On 12/08/2024 11:07, Steve Hageman wrote: One clarification - On Stacking the digital filters - the bandwidth does not narrow - I misspoke. Naturally being a Hardware Guy I forgot that the digital filters do no load each other, like analog filters can. (I should never type before two cups of c

Re: Ettus N200 Connecting to Device

ikely be required to make that work. The N200 isn't really intended to operate without *SOME* kind of daughtercard(s) installed.  The motherboard itself   doesn't really "do" RF by itself. On Friday, 9 August 2024 at 10:28:00 am AEST, Marcus D. Leech wrote: On 08/08/

Re: Ettus N200 Connecting to Device

On 08/08/2024 20:18, Q W wrote: Hi there, We are considering using a USRP N200 for a project, and want to figure out some technical details before placing the order. We plan to use N200 to control our own device based on the analog RF signal sent from the device. The general structure is to

Re: Writing Drivers for Custom Hardware

On 13/07/2024 12:55, Ian Buckley wrote: As an aside…. I wonder if the original USRP2 transport code is still captured in the public domain. This used a proprietary Ethernet transport for IQ before we switched to UDP in UHD transport. I think that was part of GnuRadio at the time, so pulling a v

Re: Writing Drivers for Custom Hardware

On 12/07/2024 16:42, Walter Szeliga wrote: Hi all,     I have a GNSS Firehose (https://transitiva.com/product/gnss-firehose-receiver-tri-band-quad-constellation/) and have been trying to get it working, in a streaming capacity, with Gnuradio. The Firehose sends packets over ethernet using the

Re: Writing Drivers for Custom Hardware

On 12/07/2024 20:25, Chris Kuethe wrote: I've not played with the ZMQ blocks, but a number of other drivers can operate in network mode, eg. UHD, SoapySDR, and rtlsdr. Since the firehose appears to use 2-bit samples I feel like you could fairly easily convert that into something resembling rtl_

Re: Assistance Needed with Signal Reception Using USRP N210 in GNU Radio Companion

On 11/07/2024 12:00, Muhammad Anas wrote: It is a VOR signal that has both FM modulated and AM modulated signal, coming from signal generator What daughtercard do you have in your N210?  What have you set the gain to on the radio block?  What is the   output level of the signal generator?

Re: USRP B210 Frequency Offset

On 15/05/2024 05:52, Moses Browne Mwakyanjala wrote: I've encountered a consistent frequency offset of around 2ppm with my new B210. Operating at a sample rate of 4 MSPS with the "internal" clock, all calibrations were performed using a sine wave from an Agilent signal generator. Though seemi

Re: Period doesn't match for frequency sweeping using probe

.  That should work.    My point was about re-tuning the hardware at those rates. On Fri, 3 May 2024 at 14:27, Marcus D. Leech wrote: On 03/05/2024 09:24, Huang Wei wrote: > Hi Adrian and Marcus, > > That solved the problem : ) > Thank you very much f

Re: Period doesn't match for frequency sweeping using probe

On 03/05/2024 09:24, Huang Wei wrote: Hi Adrian and Marcus, That solved the problem : ) Thank you very much for your help! Kind regards, Wei You're welcome. I'll note that your probe is operating at 10KHz.  Actual real radio hardware will be unlikely to be able to   re-tune at that rate, sh

Re: Period doesn't match for frequency sweeping using probe

On 03/05/2024 07:31, Adrian Winter wrote: Hei Wei, Try adding a Throttle block to the upper branch too. A quick test shows that if you have two independent data flow paths, the sample rate will be way too high (see log output in the lower left corner: rate is at 300 MS/s Each independent s

Re: B200-mini not detected thru GNU Radio

On 13/03/2024 16:13, Woods, Alex C wrote: Hello, I've constructed the Spectrum Analyzer as seen on this page (see following link to GNU radio wiki) in hopes to test the functionality of GNU radio's compatibility with the b200-mini I plan to use for a project: https://wiki.gnuradio.org/index

Re: uhd.find_devices() - AttributeError

On 05/03/2024 16:56, Trung Trieu wrote: Hello all, I've been having some issues with gnuradio 3.10 and still haven't figured it out yet. I'd really appreciate it if anyone could help me or have any pointers that I can follow. For your reference, I have an Ubuntu 22 virtual machine running on

Re: Group name of python scripts generated by GRC

On 09/02/2024 09:04, Elof Wecksell via GNU Radio, the Free & Open-Source Toolkit for Software Radio wrote: You might be interested in the unix command newgrp, that can change the group id of your session such that new files greated should have this group. The normal behavior for any program is

Re: Python Block : no access to code

On 01/02/2024 15:21, Paul Atreides wrote: Tom: 1) This is really more of a Linux file system permissions issue, but I would guess that if you copy the EPY block to any directory in /home/user, you will be in good shape. If you still get the error, you may need to change the permissions of the

Re: Using RFNoC blocks for satellite systems

that it would be a lot of work. Regardless, officially, RNOC IS NOT SUPPORTED on B2xx hardware. Sent from my iPhone On Jan 26, 2024, at 14:22, Marcus D. Leech wrote: On 26/01/2024 17:07, Daniel Estévez wrote: Hi Yotam, As far as I know, the B200 doesn't support RFNOC. From

Re: Using RFNoC blocks for satellite systems

On 26/01/2024 17:07, Daniel Estévez wrote: Hi Yotam, As far as I know, the B200 doesn't support RFNOC. From https://www.ettus.com/sdr-software/rfnoc/ "all USRP devices from the third-generation on (X300 Series, E300 Series) are supported by RFNoC out-of-the-box". Best, Daniel. This is the c

Re: 2 SDRs – Parallel Programming

On 05/01/2024 10:33, Jim Melton wrote: This has less to do with GNU Radio and more to do with real-time programming . A system is said to be real-time if the total correctness of an operation depends not only upon its logical correctness, bu

Re: Doppler

On 02/01/2024 05:01, Daniel Estévez wrote: By the way, Just for fun, there is this paper about what Doppler drift rates are physically meaningful in RF. This topic comes up when doing de-drift in narrowband SETI searches: https://arxiv.org/pdf/1910.01148.pdf Some of the objects at the botto

Re: Doppler

On 01/01/2024 16:11, Marcus Müller wrote: Liya, Doppler shift Δf is proportional to both speed and carrier frequency /f/₀ Δ/f/ = /f/₀ · /v///c/₀, where /v/ is the relative speed of your thing, and /c/₀ is the speed of light. The highest frequencies we can, so far, do radio communications o

Re: Doppler

On 30/12/2023 13:27, Daniel Estévez wrote: Hello Jiya, 10GHz/s is a huge drift rate, unless it is for chirped radar or something similar. Did you really mean to use 10GHz/s? Best, Daniel. "Ah, Houston, we're approaching the Black Hole, and speed says 0.C.  Houston?  Houston?  Mom?" O

Re: controlling gain of USRP Sink

On 15/12/2023 15:58, Manuel Caldas wrote: Hi all, I am using an Ettus b200 mini for transmitting a tone at 4GHz (which in turn feeds a radiometer), through a signal source block and a USRP Sink. Also in my flowgraph I have a Qt GUI Range for manually setting the USRPs Gain. I manually change

Re: MPM problem

On 22/11/2023 16:42, Alejandra Medina Díaz wrote: I'm starting using USRP X440 with a fm receiver I used before with others USRPs, but when I execute the .grc I got: Generating: '/home/lab03/Downloads/analizer1.py' Executing: /usr/bin/python3 -u /home/lab03/Downloads/analizer1.py [INFO] [UHD]

Re: Code::Blocks and FIR pm_remez algorithm

----- *From:* discuss-gnuradio-bounces+ayodha=hotmail@gnu.org on behalf of Marcus D. Leech *Sent:* Saturday, September 30, 2023 9:11 PM *To:* discuss-gnuradio@gnu.org *Subject:* Re: Code::Blocks and FIR pm_remez algorithm On 30/09/2023 22:42, N B wrote: Hel

Re: Code::Blocks and FIR pm_remez algorithm

On 30/09/2023 22:42, N B wrote: Helo, I was looking at the FIR algorithm in pm_remez.cc and saw it is based on the old Janovetz implementation of Parks-McClellan. The author of one of my DSP books, Andreas Antoniou, makes the statement that he improved on the original Parsk-McClellan algorith

Re: FM Carrier Recovery for AOA Calculation

On 01/09/2023 16:39, Marcus Müller wrote: Ah, nice! yeah, then this would work – but! any oscillator has drift, so two local oscillators will not stay on the same phase for long; if your first couple measurements are correct, but suddenly your directions become very wrong, that's what I'd inves

Re: compiling gr-limesdr error

On 13/08/2023 14:55, robin ivetic wrote: Hello, I try to install gr-limesdr on arch linux true pacman, but after gnuradio upgrade on 3.10.7, can't do that any more, and compiling gr-limesdr gives me this, and files are there CMake Warning (dev) at /lib/cmake/gnuradio/GrPython.cmake:21 (find

Re: B2xx round trip delay

On 13/08/2023 00:36, Ali G. Dezfuli wrote: Hi all, I'd like to measure the round-trip delay (RTD) between two B200 USRPs. For that, I send a raised-cosined-filtered, BPSK modulated PN-sequence, and as soon as I get this signal at the receiver, send back the same sequence from the Rx to the Tx,

Re: Rolling QT GUI Time Sink?

On 01/08/2023 22:41, Derek Kozel wrote: There used to be the WX Strip chart which internally handled displaying slow signals and scrolling them. I keep hoping to implement it, but haven't yet made the time. I wrote that WX feature "back in the day". One can achieve the same effect by using the

Re: Total SDR Newbie

On 27/07/2023 10:41, Arnie Shore wrote: While I have experience developing free, Open Source software in other environments like Computer-Aided Dispatch, Gnu radio has piqued my current interest.  Me and hardware haven't gotten along too well over the years -- I barely have a handle on Ohm's la

Re: USRP B200mini Does Not Work in Gnu Radio With Latest Version of Linux Mint (21.2)

On 25/07/2023 18:44, Gary Schafer wrote: From: "Marcus D. Leech" To: discuss-gnuradio@gnu.org Subject: Re: USRP B200mini Does Not Work in Gnu Radio With Latest Version of Linux Mint (21.2) Message-ID: Content-Type: text/plain; charset=UTF-8; format=flowed On 25/07/2023 11:2

Re: USRP B200mini Does Not Work in Gnu Radio With Latest Version of Linux Mint (21.2)

On 25/07/2023 11:20, Sylvain Munaut wrote: If that's the case, then Mint are now packaging a version of UHD that is NOT from NI/Ettus. Doesn't UHD have like a plugin system that can dynamically load .so files ? The UHD_MODULE_PATH thing ? So it could be a perfectly legit UHD just with some

Re: USRP B200mini Does Not Work in Gnu Radio With Latest Version of Linux Mint (21.2)

On 25/07/2023 11:20, Sylvain Munaut wrote: If that's the case, then Mint are now packaging a version of UHD that is NOT from NI/Ettus. Doesn't UHD have like a plugin system that can dynamically load .so files ? The UHD_MODULE_PATH thing ? So it could be a perfectly legit UHD just with some

Re: GPS module USRP x410

On 25/07/2023 09:36, Marcus Müller wrote: Hi Theo, for some USRPs, UHD used to export GPS strings as *sensors*: https://files.ettus.com/manual/page_usrp_x4xx.html#x4xx_usage_sensors You can make calls on the UHD USRP Source block to query these sensors: https://www.gnuradio.org/doc/doxygen/c

Re: USRP B200mini Does Not Work in Gnu Radio With Latest Version of Linux Mint (21.2)

On 25/07/2023 02:19, Sylvain Munaut wrote: Hi, The " type: soapy" probably means there is some weird plugin installed making soapy device appear as UHD device or something. (and so it's using any audio device as IQ source ...) If that's the case, then Mint are now packaging a version of UHD tha

Re: USRP B200mini Does Not Work in Gnu Radio With Latest Version of Linux Mint (21.2)

On 24/07/2023 22:13, Gary Schafer wrote: I just upgraded my system from Linux Mint 21.1 to 21.2. My system is an Intel i7-6700 based desktop with 32 GB of RAM. After loading the OS and going through my usual routine of loading programs and drivers, I discovered that I cannot use my USRP B200min

Re: Error strange: The daughterboard manager encountered a recoverable error in init.

On 17/07/2023 02:16, sp wrote: when I want to use USRP x310 with ubx-160 and twin-rx daughterboard I have faced this strange log... The daughterboard manager encountered a recoverable error in init. Loading the "unknown" daughterboard implementations to continue. The daughterboard cannot operat

Re: How to convert dB to dBm and dBFS in GNURadio with USRP X310 and UBX-160

arcus D. Leech ‏: On 03/07/2023 12:24, Dor Ratz wrote: How are you Marcus? First, thanks a lot. I've done measurements for a specific Gain, frequency, temperature. I've transmitted from a signal generator CW signal -> power splitter 1:2 to( spectrum analyzer

Re: Using volk_profile for all users on shared server

Remove the file temporarily. Run a flow graph that consumes some resources. Put the volk config back in place. Compare. Sent from my iPhoneOn Jun 26, 2023, at 7:01 PM, Richard Bell wrote:What is a good way to test whether this is working or not?On Thu, Jun 22, 2023 at 5:58 PM Marcus D. Leech

Re: Help Regarding Transmitting Gain of USRP N-200

On 25/06/2023 16:49, Arhum Ahmad wrote: Respected sir, I am using N-200 USRP for transmitting a signal. While transmitting, I havechangedthe Gain value in the SDRutransmitting block, but my signal strength at the receiver remains the same. I also stop and restart the code but the change in gai

Re: Using volk_profile for all users on shared server

On 22/06/2023 20:50, Richard Bell wrote: Hello, I am managing a server that is connected to several USRP N320s and USRP X300s, that many users access. The server is running Ubuntu 22.04 with GNU Radio 3.10.6.0 and UHD 4.4.0.0, installed from source. I would like to know if there is a way to

Re: how to use 2 usrp b210 to receive synchronously

On 30/05/2023 08:12, Gwenhael Goavec-Merou wrote: With the link: https://lists.gnu.org/archive/html/discuss-gnuradio/2019-11/msg00034.html Sorry Gwen The key is to set a common start-time on the two multi_usrp objects (after making sure that both units have   a common understanding of clock

Re: Resource issues when trying to record 2 FM broadcast

On 20/05/2023 09:12, Martin Lefkowitz wrote: Here is the screen capture of the Marcus Leech version of the two FM demodulate as described here https://wiki.gnuradio.org/index.php?title=Frequency_Xlating_FIR_Filter https://github.com/patchvonbraun/wfm_stuff With a samplerate of 2.4M it uses

Re:

On 16/05/2023 03:12, Natasya Nurul Putri wrote: Hello Everyone I want to ask about hot to connect USRP devices on ubuntu I have done USRP install on ubuntu. but, when I connect USRP device to PC. However, on ubuntu OS the device (USRP)  is not found. How to solve this problem? Looking for you

Re: Getting GPS data into stream

takes these files and actually converts them to valid XLSX without the misconversion footguns, and that same tool could also be run in a browser for those having a hard time executing python on their machines. Cheers, Marcus On 03.05.23 23:05, Marcus D. Leech wrote: On 03/05/2023 16:51, Marcus

Re: Getting GPS data into stream

On 03/05/2023 16:51, Marcus Müller wrote: Do agree, but really don't like CSV, too underspecified a format, too many ways that comes back to bite you (aside from a thousand SDR users writing emails that their PC can't keep up with writing a few MS/s of CSV…) I like CSV because you can hand yo

Re: Getting GPS data into stream

On 03/05/2023 14:59, Fabian Schwartau wrote: Sorry, forget it. Wrong sink... You probably want: https://wiki.gnuradio.org/index.php/File_Meta_Sink Am 03.05.23 um 20:52 schrieb Fabian Schwartau: OK, I think I found an easier way (at least for me), without having to write my own module - never

Re: Getting GPS data into stream

On 03/05/2023 14:04, Marcus Müller wrote: Hi Fabian, I'd write a block that copies a stream in- to output. It might query gpsd every time the work() function is called, or have a FIFO into which data from gspd is being pushed by a separate thread (or by reading from  a socket or however gspd

Re: Pail of Milky Way Horn Radio Telescope

On 02/05/2023 19:17, Glen Langston wrote: Hi Marcus Leech (and Muller), Well you beat me to it! It’s great that you can pre-confirm my results. I’ll have to look at the rest of your memos. Do you mind if we cross-post your memo CERRA memo, as a LightWork memo too? Maybe it will be better to

Re: Pail of Milky Way Horn Radio Telescope

, is pretty reliable and easy. Cheers Glen On May 2, 2023, at 7:03 PM, Marcus D. Leech wrote: On 02/05/2023 18:58, Marcus Müller wrote: Hey Glen, this is really cool stuff! Tried to give this a bit of reach on Mastodon [1], but I'm far from the audience I used to have on twitter.

Re: Pail of Milky Way Horn Radio Telescope

On 02/05/2023 18:58, Marcus Müller wrote: Hey Glen, this is really cool stuff! Tried to give this a bit of reach on Mastodon [1], but I'm far from the audience I used to have on twitter. It's pretty cool that a galvanized pail does the job so well, would have thought zinc wouldn't be low-lo

Re: Pail of Milky Way Horn Radio Telescope

On 02/05/2023 18:58, Marcus Müller wrote: Hey Glen, this is really cool stuff! Tried to give this a bit of reach on Mastodon [1], but I'm far from the audience I used to have on twitter. It's pretty cool that a galvanized pail does the job so well, would have thought zinc wouldn't be low-lo

Re: Latency due to hardware initialization

ue, 25 Apr 2023, 17:23 Marcus D. Leech, wrote: On 25/04/2023 02:23, Ahmad Oweis wrote: Hi all, I'm investigating the factors behind the latency in my simple GRC flow graph, I have a theory and I'd be grateful if someone can confirm it or refute it. Say I

Re: Latency due to hardware initialization

On 25/04/2023 02:23, Ahmad Oweis wrote: Hi all, I'm investigating the factors behind the latency in my simple GRC flow graph, I have a theory and I'd be grateful if someone can confirm it or refute it. Say I have a simple flow graph consisting of a file source connected to a hardware sink.

Re: GNURadio/USRP stream tag execution not as expected

On 18/04/2023 15:46, Nicolas Buhr wrote: Update: I found a way to make it work on the X310 (and in a limited way also for the B210) If I implement it as a bursty transmission (with tx_sob, tx_eob and tx_time tag) I can calculate the time of the gain change from tx_time and the sample rate and

Re: E312 RuntimeError: rpc::timeout: Timeout of 2000ms while calling RPC function 'get_num_xbars'

make basics questions, im new using GNU-Radio and the e312 El mié, 12 abr 2023 a las 11:22, Marcus D. Leech () escribió: On 12/04/2023 10:49, JORGE GONZALEZ ORELLANA via GNU Radio, the Free & Open-Source Toolkit for Software Radio wrote: > Hello everyone > &

Re: E312 RuntimeError: rpc::timeout: Timeout of 2000ms while calling RPC function 'get_num_xbars'

On 12/04/2023 10:49, JORGE GONZALEZ ORELLANA via GNU Radio, the Free & Open-Source Toolkit for Software Radio wrote: Hello everyone I was fixing a problem with the mpm version, for some reason, I had different versions both in my host and in the e312, i fixed that problem by installing GNU-rad

Re: Modifying File Sink

In that parameter field will do what you want. I strongly suggest learning a bit of Python to use GRC. Your "for loop" example isn't quite relevant, since GRC uses what's called a "data flow" programming model.  At its top level,   it's NOT a "procedural&

Re: Modifying File Sink

On 02/04/2023 17:41, DİREN ERDEM AYDIN wrote: Dear all, I would like to modify the file sink so that when I changed the receiver frequency during simulation, the file sink will create a new file and record new frequency data there. Is it possible to do that? and where can I find the source co

Re: N310 radio Sample Rate setting

On 25/03/2023 15:45, George Edwards wrote: Hello GNURadio Community, I am about to use a N310 radio to transmit and receive data. My problem is I do not know how to interpret the sample rate parameter. I will pose some questions that I am seeking answer to (I read there are 3 Master Clocks fo

Re: FFT Size and Signal & Vector Sources Amplitude Unit

On 09/03/2023 10:14, Wolfgang Wilde wrote: In fact, in real world and with real measurement devices, the units are not related to "instantaneous voltages" and even lesser "voltages seen at the antenna". Any form of antenna may deliver different voltages. Is it some Yagi antenna? Or is the activ

Re: FFT Size and Signal & Vector Sources Amplitude Unit

On 08/03/2023 15:43, DİREN ERDEM AYDIN via GNU Radio, the Free & Open-Source Toolkit for Software Radio wrote: Dear All, Changing only FFT size of the freq sink block during simulation drops signal power drastically, screenshots are given in the attachments. I am providing the pulse burst from

Re: Qt ImportError

On 07/03/2023 15:58, Daniel R. Marlow wrote: -Original Message- From: discuss-gnuradio-bounces+marlow=princeton@gnu.org On Behalf Of Marcus D. Leech Sent: Tuesday, March 7, 2023 3:19 PM To: discuss-gnuradio@gnu.org Subject: Re: Qt ImportError On 07/03/2023 15:05, Daniel R

Re: Qt ImportError

On 07/03/2023 15:05, Daniel R. Marlow wrote: from PyQt5 import Qt Make sure you have your system setup to run Python3 by default? I have Ubuntu 22.04, same as you.  I don't have this problem. I installed everything from APT packages.

Re: Spurs in UBX-160 Daughterboard with USRP X310

On 06/03/2023 08:54, Dor Ratz wrote: Hey Marcus, Thanks a lot. I'm using external 10 MHz reference clock (REFCLK) with 1e-12[Hz] frequency resolution -> it feeds my PLL in the UBX-160 daughterboard in the X310 USRP. The REFCLCK input to the X310 is used to control the master-clock(s) on the

Re: Spurs in UBX-160 Daughterboard with USRP X310

On 02/03/2023 13:09, Dor Ratz wrote: Hey, Do you know how to assess the RF PLL resolution in integer-N mode? I've looked in ANALOG max2871 PLL datasheet - not sure I found the answer there. https://www.analog.com/media/en/technical-documentation/data-sheets/max2871.pdf The Ettus team is CC h

Re: Spurs in UBX-160 Daughterboard with USRP X310

On 01/03/2023 13:14, Dor Ratz wrote: Hey Marcus, How are you? Not sure if you got my email. Do you know anyway I can change transmitted frequency using PMT message when doing your solution? In addition, something that seemed to help me: I used this: https://lists.gnu.org/archive/html/disc

Re: Galileo Frequency Shifting and Filtering

On 01/03/2023 13:01, Kyeong Su Shin wrote: Hello all: Regarding the signal amplification: * Amplifiers CAN improve the SNR, when used properly. The idea is to minimize the noise figure of the receive chain by putting a good LNA and filters (prevents LNA overload) in front of the c

Re: Galileo Frequency Shifting and Filtering

On 01/03/2023 08:50, David Dima wrote: Hi, Sure, but the power of this kind of signals is below noise level. Current antenna amplifies 30dB but it still not enough to see anything in the spectrum (I have checked it alredy). Regards, David You generally won't be able to see GPS signals in the

Re: Error With GPSDO USRP x300

On 22/02/2023 18:14, Jones, James (jtjones49) wrote: Hello, I have a USRP x300 and I am trying to use the GPS module for clock sync. I am running Ubuntu 20 and am using external GPS antennas and am using GNUradio version 3.10.5.1 . I have the following arguments for the USRP source block: Syn

Re: Error With GPSDO USRP x300

On 22/02/2023 18:14, Jones, James (jtjones49) wrote: Hello, I have a USRP x300 and I am trying to use the GPS module for clock sync. I am running Ubuntu 20 and am using external GPS antennas and am using GNUradio version 3.10.5.1 . I have the following arguments for the USRP source block: Syn

Re: Spurs in UBX-160 Daughterboard with USRP X310

On 21/02/2023 08:43, claudio.franch...@tlrnet.eu wrote: Hi Dor,    if the 6kHz spurious from the carrier are discrete, it has nothing to do with phase noise, but rather could be residuals from fractional divisions of the NCOs. On the other hand, with reference to the measurements

Re: Issue with UHD and GNUradio

On 15/02/2023 18:13, Jones, James (jtjones49) wrote: Hello, I need to use the latest version of UHD to work with my USRP image. The version that comes with GNUradio will not work as it is not updated. I have the latest version of UHD installed on my computer, but when installing GNUradio it ins

Re: Galileo E5a and E5b bands simultaneously receiver with GRC

On 14/02/2023 15:16, Sylvain Munaut wrote: Hi, - Number of channels: 1 ( Since USRP 2190 model has only 1 local oscillator, it will not be possible to use 2 simultaneously channels for receiving) Well, you could still tune the RF between the two freq and then use the DDC to shift and decimat

Re: How to display a part of the GRC spectrum?

en in complex baseband delivered by hardware*, and NOT necessarily   about it being a tool that is useful to simulate actual hardware -- at least, not in real time. On Fri, Feb 3, 2023, 9:38 AM Marcus D. Leech wrote: On 03/02/2023 11:30, George Edwards wrote: Hi Fabian, Than

Re: How to display a part of the GRC spectrum?

On 03/02/2023 12:07, George Edwards wrote: Thank you Marcus, thank you everyone! A more fundamental question I have is: Let's assume I was working at a low sample rate, say 32 kHz. Both the QT Freq GUI and the webgui would display a spectrum between -16 kHz +16 kHz. Suppose, I would like the

Re: How to display a part of the GRC spectrum?

On 03/02/2023 11:30, George Edwards wrote: Hi Fabian, Thanks for your suggestion! However, it will not help me because I would like to see the spectrum displayed over the proper range 1GHz +/- 4MHz. George I think we now need more information about your setup.  What type of hardware?    I k

Re: How to display a part of the GRC spectrum?

On 03/02/2023 11:04, Fabian Schwartau wrote: Hi George, I don't know if the Frequency sink can do that for you, but I guess it cannot. One way is to mix the signal with a complex oscillation and a multiplier with the oscillator running at the negative frequency you wish to downshift the signa

Re: Grc_gnuradio import blks2 replacement?

On 01/02/2023 13:03, George Edwards wrote: Porting an older version of some code that used an earlier version of gnuradio libs, and am rebuilding with gnuradio 3.10.  Old code referred to an import of blks2 from grc_gnuradio which then fails with No module named grc_radio. Is there a replacemen

Re: Qt widgets Improvement

On 29/01/2023 14:20, Rohit Bisht wrote: I'd like to start with "integrating gnu with qt creator" because it would make it easier to write code in the integrated qt environment and speed up build, run, and testing. I believe adjusting the cmake file and fixing paths to missing library files wo

Re: Dual-Frequency simultaneously receiver using one USRP 2901

On 26/01/2023 09:02, claudio.franch...@tlrnet.eu wrote: Hi, David, the USRP 2901 is a dual channel RTX, so it can definitely receive two different channels at the same time, i.e. two different (carrier) frequencies. We just have to see the management through GNURadio, but here I refer to tho

Re: **Cant use UHD SINK and UHD Source in the same flowgraph

On 16/01/2023 16:30, Taylor Clark wrote: sorry about that, I am away from the laptop but I am using maint3. 8-gnauradio(v3.8.5.0 to be specific) uhd v4. 3.0-rc2 I will also note I have tried gnuradio v3.9.4.0 and have the same problem. the device is claimed by one uhd block which functions.  I

Re: **Cant use UHD SINK and UHD Source in the same flowgraph

On 16/01/2023 09:52, Taylor Clark wrote: Hey all, I am using the x410 with a flowgraph that has uhd source and uhd sink in the same flowgraph however, I believe its because the device is already claimed. Here is the output I am getting   self.uhd_usrp_source_1 = uhd.usrp_source(   File "/us

Re: Updating FPGA image on Ettus N321

On 10/01/2023 18:03, Joseph Maloyan wrote: Hello, I am currently trying to update the image of the FPGA. I am following the guide at this link... https://kb.ettus.com/USRP_N300/N310/N320/N321_Getting_Started_Guide When I try to update through network, I get the following regarding mismatched

Re: USRP B210 TX/RX switching between transmitting and receiving

On 10/01/2023 14:11, Daniel Estévez wrote: On 10/01/2023 20:01, okan erturk wrote: So TX has a priority over RX, am I right? I don't now for sure, but I guess that would make sense, because typically you would be attempting to RX continuously, while TXing some bursts (which would leave gaps

Re: USRP B210 TX/RX switching between transmitting and receiving

On 10/01/2023 14:01, okan erturk wrote: So TX has a priority over RX, am I right? Not sure what you mean by "priority". The RX/TX port will be connected to the TX whenever it's transmitting. The RX chain can either be connected to the RX2 port all the time, or if it's configured for   TX/RX,

Re: 3.9/3.10 and UHD Firmware

On 09/01/2023 20:25, Eric McDonald wrote: I'm running Ubuntu 20.04 and have an x310.  I flashed it with the latest 'apt install libuhd-dev' which appeared to be UHD 4.3 and put the FPGA at capability 39. However, 'apt install gnuradio-dev' installs GR 3.10 which installs libgnuradio-uhd3.10.4 w

Re: AFSK Demodulator attempt fail

On 05/01/2023 20:32, ke wrote: Hi. I'm trying to demodulate an AFSK signal, but I'm getting intermittent signal on the output. What am I doing wrong? The GRC file: https://nas.egzi.duckdns.org/share.cgi?ssid=4977729dc7584c24ad4fd6c941e08301 First thing that pops out at me is that it's

Re: USRP B210 overflow and underflow

icients in a generic FFT filter--the FFT filters tend to be more computationally efficient for larger numbers   of taps, where "larger" is somewhat system specific, but I tend to use them for anything where there are more than   about 50 or 60 taps. On Tue, Jan 3, 2023 at 5

Re: USRP B210 overflow and underflow

On 03/01/2023 16:53, Karen young wrote: sample_rate is 5M what it is you're doing at those rates: I am using a USRP B210 to transmit and receive pulse signals using attached antennas. The antennas work at 430MHz. See attached fig. and what kind of computer/OS you're using: image.png One thing

Re: USRP B210 overflow and underflow

On 29/12/2022 10:56, Karen young wrote: Hi, I am using a USRP B210 to transmit and receive pulse signals using attached antennas, and try to measure the phase delay between the transmitted and received signals. I do not understand why the following problems are happening. What can I do to fix

Re: usrp n200 problem: error when running uhd_cal_tx_dc_offset

On 28/12/2022 23:55, Ali G. Dezfuli wrote: seems it's ok: $ uhd_usrp_probe [INFO] [UHD] linux; GNU C++ version 11.3.0; Boost_107400; UHD_4.3.0.0-14-g1e718d9b [INFO] [USRP2] Opening a USRP2/N-Series device... [INFO] [USRP2] Current recv frame size: 1472 bytes [INFO] [USRP2] Current send frame s

Re: usrp n200 problem: error when running uhd_cal_tx_dc_offset

  Num transmitted samples:  0   Num sequence errors (Tx): 0   Num sequence errors (Rx): 0   Num underruns detected:   0   Num late commands:        0   Num timeouts (Tx):        0   Num timeouts (Rx):        0 Done! On Wed, Dec 28, 2022 at 7:00 PM Marcus D. Leech

Re: usrp n200 problem: error when running uhd_cal_tx_dc_offset

On 28/12/2022 04:55, Ali G. Dezfuli wrote: Hi all, I have gnuradio on this system: ubuntu 22.04 uhd 4.3.0.0-14-g1e718d9b gnuradio v3.11.0.0git-316-gc11667ef I have a USRP N200 from 2011 but have not worked with it for the last couple of years. After a long while, I just run $ uhd_cal_tx_dc_offs

Re: Is there something similar to the zero-span of spectrum analyzers in gnuradio?

On 19/12/2022 10:50, Juan Antonio wrote: I think I'm not explaining myself well again. What I want to see in the time domain is a single carrier of an 8mhz signal. That's why I was referring to the zero-span function of spectrum analyzers. I have tried to isolate a single 1K carrier using fi

Re: 回复： 回复： Problems implementing USRP b210 dual channel transceiver

On 07/12/2022 07:49, 能书能言 wrote:     The number of data packets in ① is not correct, but the number of data packets in ② is correct. Therefore, to avoid more problems, I choose ②.     By viewing the pictures in the attachment and your explanation, f_ RF is LO frequency? Then the two channels sh

Re: Implementation of OFDM TX and RX using GNURadio and USRP

On 27/11/2022 16:05, Daniel Estévez wrote: On 27/11/2022 17:23, Marcus D. Leech wrote: On 27/11/2022 05:26, Daniel Estévez wrote: Hi, Another option for extracting one or a range of items from a vector is to use Vector to Stream followed by Keep 1 in N or Keep M in N. See near the bottom

Re: Implementation of OFDM TX and RX using GNURadio and USRP

On 27/11/2022 05:26, Daniel Estévez wrote: Hi, Another option for extracting one or a range of items from a vector is to use Vector to Stream followed by Keep 1 in N or Keep M in N. See near the bottom of this flowgraph for an example: https://github.com/daniestevez/reu-2022/blob/main/polyp

Re: Implementation of OFDM TX and RX using GNURadio and USRP

*From:* discuss-gnuradio-bounces+waalamiri42=tntech@gnu.org on behalf of Marcus D. Leech *Sent:* Saturday, November 26, 2022 6:44 PM *To:* discuss-gnuradio@gnu.org *Subject:* Re: Implementation of OFDM TX and RX using GNURadio and USRP

Re: Implementation of OFDM TX and RX using GNURadio and USRP

On 26/11/2022 15:19, Al Amiri, Wesam (waalamiri42) wrote: Dears, I am working on the implementation of OFDM TX and RX using GNURadio 3.10.3 and USRP N210 (with UHD_4.2.0). In the implementation, I followed the GRC flow graph provided by GNU Radio Workshop (Slides 259 - 260) with changing the

  1   2   3   4   5   6   7   8   9   10   >