Digital Modes - Weak Signal Transmission: Difference between revisions

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= Digital Modes =
= Digital Modes =
* [https://www.sarcnet.org/page-12.html#SARCNETdigital SARCNET Goes Digital]
* [https://www.sarcnet.org/page-12.html#SARCNETdigital SARCNET Goes Digital]
= Digital Modes Using Baofeng =
* [https://cupano.com/2018/04/23/digital-modes-with-vhfuhf_1/ Digital Modes with VHF UHF]


= WSJTS =
= WSJTS =

Revision as of 05:18, 8 February 2024

Digital Modes

Digital Modes Using Baofeng


WSJTS

Notes on WSJT-X Installation for Mac OS X

  • If you have already downloaded a previous version of WSJT-X then I suggest you change the name in the Applications folder from WSJT-X to WSJT-X_previous before proceeding.
  • I recommend that you follow the installation instructions especially if you are moving from v2.3 to v2.4 or later, of WSJT-X or you have upgraded macOS.
  • Double-click on the wsjtx-...-Darwin.dmg file you have downloaded from K1JT's web-site.
  • Now open a Terminal window by going to Applications->Utilities and clicking on Terminal.
  • Along with this ReadMe file there is a file: com.wsjtx.sysctl.plist which must be copied to a system area by typing this line in the Terminal window and then pressing the Return key.
sudo  cp  /Volumes/WSJT-X/com.wsjtx.sysctl.plist  /Library/LaunchDaemons
  • You will be asked for your normal password because authorisation is needed to copy this file.
  • (Your password will not be echoed but press the Return key when completed.)
  • Now re-boot your Mac. This is necessary to install the changes.
  • After the reboot you should re-open the Terminal window as before and you can check that the change has been made by typing:
sysctl -a | grep sysv.shm
  • If shmmax is not shown as 52428800 then contact me since WSJT-X might fail to load with an error message: Unable to create shared memory segment.
  • You can now close the Terminal window.
  • It will not be necessary to repeat this procedure again, even when you download an updated version of WSJT-X.
  • It might be necessary if you upgrade macOS.
  • Drag the WSJT-X app to your preferred location, such as Applications.

Audio Configuration

  • You need to configure your sound card.
  • Visit Applications > Utilities > Audio MIDI
  • Setup and select your sound card and then set Format to be 48000Hz 2ch-16bit for input and output.

Preferences

  • Now double-click on the WSJT-X app and two windows will appear.
  • Select Preferences
  • Under the WSJT-X Menu and fill in various station details on the General panel'.
  • I recommend checking the 4 boxes under the Display heading and the first 4 boxes under the Behaviour heading.
  • Depending on your macOS you might see a pop-up window suggesting that wsjtx wants to use the microphone.
  • What this means is that audio input must be allowed. Agree.

Audio Panel

  • Next visit the Audio panel and select the Audio Codec you use to communicate between WSJT-X and your rig.
  • There are so many audio interfaces available that it is not possible to give detailed advice on selection.
  • If you have difficulties contact me.
  • Note the location of the Save Directory.
  • Decoded wave forms are located here.

Reporting Panel

  • Look at the Reporting panel.
  • If you check the "Prompt me" box, a logging panel will appear at the end of the QSO.
  • Visit Section 11 of the User Guide for information about log files and how to access them.

Radio Panel

  • Finally, visit the Radio panel.
  • WSJT-X is most effective when operated with CAT control.
  • You will need to install the relevant Mac device driver for your rig, and then re-launch WSJT-X.
  • Return to the Radio panel in Preferences and in the "Serial port" panel select your driver from the list that is presented.
  • If you do not know where to get an appropriate driver, contact me.

Clock

  • WSJT-X needs the Mac clock to be accurate.
  • Visit System Preferences > Date & Time and make sure that Date and Time are set automatically.
  • The drop-down menu will normally offer you several time servers to choose from.

Help

  • On the Help menu, have a look at the new Online User's Guide for operational hints and tips and possible solutions to any problem you might have.

fldigi - Ham Radio Digital Modem Application

  • Installation using Mac Terminal and MacPorts

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