[USRP-users] GNU Radio amateur group meeting

Reminder! Amateur Radio group meeting **27 February 2021 16:00 UTC** Subject: A Look at Project 25 (P25) Digital Radio Presenter: Aaron Rossetto, National Instruments See the details at https://wiki.gnuradio.org/index.php/Talk:HamRadio No registration required. 73, -- Barry Duggan KV4FV https://

[USRP-users] GNU Radio Amateur Radio group meeting

Amateur Radio group meeting **27 February 2021 16:00 UTC** Subject: A Look at Project 25 (P25) Digital Radio Presenter: Aaron Rossetto, National Instruments See the details at https://wiki.gnuradio.org/index.php/Talk:HamRadio No registration required. 73, -- Barry Duggan KV4FV https://github.com/

[USRP-users] Don't forget - GNU Radio Amateur Radio group meeting

**16 January 2021 16:00 UTC** Subject: Using GRC to build radios: Make the flow graph work for you Presenter: John Petrich W7FU See the details at https://wiki.gnuradio.org/index.php/Talk:HamRadio#16_January_2021_16:00_UTC No registration required. 73, -- Barry Duggan KV4FV https://github.c

Re: [USRP-users] Transmit underruns

ect the sideband with the default option of the QT GUI Chooser block before you start the flow graph (you can't change filter taps on the fly). The test file is here. http://www.w6rz.net/ssbaudio.wav Ron On 1/5/21 15:29, Barry Duggan via USRP-users wrote: > Ubuntu 20.10 >

Re: [USRP-users] Transmit underruns

Thanks for your reply. Did you forget to give the link to the GRC file? 73, --- Barry Duggan KV4FV https://github.com/duggabe On Tue, 5 Jan 2021 17:33:24 -0800, Ron Economos wrote: Here's an ssb flow graph that's known to work. You can select the sideband with the default option of the QT GUI C

[USRP-users] Transmit underruns

Ubuntu 20.10 GRC 3.9.0.RC0 UHD 4.0 B200mini USRP_ssb_xmt.grc - https://pastebin.com/ypyERUGE I have experimented with various combinations of send_buff_size and send_frame_size but continue to get underruns while transmitting. I've also tried setting the Audio Source 'OK to Block' to 'Yes' and

[USRP-users] Amateur Radio group meeting in January

**16 January 2021 16:00 UTC** Subject: Using GRC to build radios: Make the flow graph work for you Presenter: John Petrich W7FU Agenda: * Getting started with GRC * Basic flow graph workspace organization * Flow graph details * Data flow problem solving * Practical odds and ends for real radios

[USRP-users] REMINDER: GR Amateur Radio video meeting

**Saturday 12 December 2020 16:00 UTC** Subject: Transmit / Receive switching and station control Presenter: Gavin Jacobs VE7GSJ Agenda: * Requirements for TX/RX switching * VE7GSJ Solution (hardware & GNURadio Companion) * Demo on 2m repeater See the details at https://wiki.gnuradio.org/index.

[USRP-users] GR Amateur Radio video meeting

**Saturday 12 December 2020 16:00 UTC** Subject: Transmit / Receive switching and station control Presenter: Gavin Jacobs VE7GSJ Agenda: * Requirements for TX/RX switching * VE7GSJ Solution (hardware & GNURadio Companion) * Demo on 2m repeater See the details at https://wiki.gnuradio.org/index.

[USRP-users] REMINDER: GR Amateur Radio video meeting

For those interested in using GNU Radio in amateur radio applications, we have set up an On-line video meeting - I will present a program on Frequency Shift Keying, with a live On-the-Air demonstration of radioteletype - It will be on **Saturday 7 November 16:00 UTC** - see the details at http

Re: [USRP-users] B200mini questions

uble-check them.  The maximum sampling rate is 61.44 Msps. --Neel Pandeya On Wed, 28 Oct 2020 at 19:45, Barry Duggan via USRP-users mailto:usrp-users@lists.ettus.com>> wrote: Using a B200mini, I have the following questions: - If I have one antenna connected to the TRX port,

[USRP-users] B200mini questions

Using a B200mini, I have the following questions: - If I have one antenna connected to the TRX port, is the receiver blocked during a transmit? - What are the maximum and minimum sample rates supported? Thanks, --- Barry Duggan KV4FV https://github.com/duggabe ___

[USRP-users] GNU Radio Amateur Radio video meeting

For those interested in using GNU Radio in amateur applications, we have set up the following: * On-line video meeting ** a host / moderator will present a topic with a demonstration ** next meeting: **Saturday 7 November 16:00 UTC** ** we will limit the session to one hour ** see the details (i

[USRP-users] Announcing the first GNU Radio Amateur Radio monthly meeting group

As a result of the CRGon20 Breakout session on HamRadio, there seems to be a lot of enthusiasm for the formation of a monthly group meeting for those interested in using GNU Radio in amateur applications. So we have set up the following: * On-line video meeting ** a host / moderator will prese

Re: [USRP-users] AM transmission

Hi Ernest, Look at https://wiki.gnuradio.org/index.php/File:USRP_AM_xmt_fg.png You will need to adjust your RF frequency. Attached is the grc file for it, but it is for 3.8. If you need to look at any of the parameters, use your editor for my grc file to find them. If you do not need the exac

Re: [USRP-users] AM transmission

Ernest, I recommend working through the https://wiki.gnuradio.org/index.php/Tutorials, and then when you get to the https://wiki.gnuradio.org/index.php/Simulation_example:_AM_transmitter_and_receiver you could adapt it to using your USRP in place of the ZMQ sockets. If you need additional h

[USRP-users] UHD USRP Source block message port

Hi! I am using a GNU Radio USRP Source block and would like to know what messages in addition to 'freq' are accepted. I have been unable to find any documentation on it. I have a B200mini. Thanks, -- Barry Duggan KV4FV ___ USRP-users mailing list