Talk:HamRadio: Difference between revisions

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Thanks to Gavin for an excellent talk. It can be viewed at https://www.youtube.com/watch?v=rTp6vQk5MqE
Thanks to Gavin for an excellent talk. It can be viewed at https://www.youtube.com/watch?v=rTp6vQk5MqE


=== TBD January 2021 16:00 UTC ===
=== 16 January 2021 16:00 UTC ===
Subject: Using GRC to build radios: Make the flow graph work for you
Subject: Using GRC to build radios: Make the flow graph work for you


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* [[Media:SSB-CW_transmitter_DSP_-_GRC_3.8_(annotated).grc]]
* [[Media:SSB-CW_transmitter_DSP_-_GRC_3.8_(annotated).grc]]


Link to Zoom presentation: TBD
Link to Zoom presentation:
    https://seti.zoom.us/j/81352632665


== Questions and Suggestions for future meetings ==
== Questions and Suggestions for future meetings ==

Revision as of 15:53, 31 December 2020

Notes about the video meetings

Saturday 17 October 2020, 20:00 UTC

After some technical difficulties with Big Blue Button, we moved to Zoom and succeeded in doing the planned agenda:

  • Presentation of gr-RTTY-basics package
   https://github.com/duggabe/gr-RTTY-basics
https://github.com/duggabe/gr-webserver
  • Audio loopback demo
  • Live Over-the-Air demo

The time (20:00 UTC) proved to be too late for participants East of Greenwich, so an earlier one was scheduled for 7 November.

Saturday 7 November 16:00 UTC

The meeting followed the agenda above. There was a minor audio difficulty with the loopback, but I proceeded to present the Over-the-Air demo successfully.

View the presentation on https://www.youtube.com/watch?v=_HmbRk-UG8Q

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

Files:

Thanks to Gavin for an excellent talk. It can be viewed at https://www.youtube.com/watch?v=rTp6vQk5MqE

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
  • Group discussion

Files:

Link to Zoom presentation:

   https://seti.zoom.us/j/81352632665

Questions and Suggestions for future meetings

Questions

  • The Ham Radio chat room on Matrix is available for follow-up and continuing discussion.
    • server: https://chat.gnuradio.org
    • or via the Homeserver in a matrix app: gnuradio.matrix.ungleich.cloud
    • room: #HamRadio:gnuradio.org
  • Questions about meetings also can be sent to "duggabe@dcsmail.net"

Suggested topics

  • Transmit hardware to operate below 50 MHz.
  • amateur radio satellite service
  • FreeDV
  • Contact ISS
  • EME - moon bounce communications
  • How to implement JS8, JS8-Call, and FT8 in GR
  • An in-depth walkthrough of GQRX
  • DMR or P25 in detail