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js8 [2023/06/27 18:24] – Added information for messaging. m7twsjs8 [2023/06/27 18:37] – m7tws
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 From the same menu, the **Decoder Sensitivity** option determines how many passes the decoder uses to detect JS8 signals. The higher the value, the more processing power required, lower power systems such as the Raspberry Pi 2 may require a lower number of passes. As a reference point, a Raspberry Pi 400 is capable of processing on **(4x) Four Decode Passes** mode with ease. From the same menu, the **Decoder Sensitivity** option determines how many passes the decoder uses to detect JS8 signals. The higher the value, the more processing power required, lower power systems such as the Raspberry Pi 2 may require a lower number of passes. As a reference point, a Raspberry Pi 400 is capable of processing on **(4x) Four Decode Passes** mode with ease.
 +
 +==== Frequencies ====
 +
 +JS8 has a list of builtin frequencies, you can select this from the main window by clicking on the frequency readout in the top left of your screen. If you cannot see this, click **View > Show Frequency & Clock**. This will be what you use to change bands, it is also the frequency which will be uploaded to PSKReporter and put in your logbook.
 +
 +JS8 splits the frequency band into 3 (three) section
 +
 +^ Frequency range (Hz) ^ Usage ^
 +| 500 - 1000 | This section is used for HEARTBEAT messaging |
 +| 1000 - 2500 | This section is used for regular JS8 operating - HEATBEATs may be sent in this region if configured in the settings menu |
 +| 2500 - 2700 | This section is also used for HEARTBEAT messaging | 
 +
 +The frequency you're transmitting on can be seen in the spectrogram view as a pair of parallel red lines or under the frequency readout described above. Ensure you have your offset set within the green section of the band (1000-2500Hz).
 +
 +When sending a HB, the associated HB regions will be used automatically unless configured otherwise. Once sent the transmit frequency will automatically change back to the frequency you set.
 +
 +Most JS8 activity is seen on 20m and 40m. There is also plenty of JS8 activity on 11m CB.
 +
 +When operating in the amateurs bands, 20m is most commonly used during the day, and 40m for the evening and night. You may be able to get messages to stations you cannot here by utilising a station on 20m during the day who can relay a message on 40m at night.
  
 ==== Autoreply (AUTO) ==== ==== Autoreply (AUTO) ====
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 ==== Common Acronyms and Shorthand ==== ==== Common Acronyms and Shorthand ====
  
-Due to the slow nature of JS8, many operators will use a variety of acronyms in addition to QCodes to help pack more information into their messages with minimal impact to the time taken to send a message.+Due to the slow nature of JS8, many operators will use a variety of acronyms in addition to QCodes to help pack more information into their messages with minimal impact to the time taken to send a message. Many of these will also be utilised in Morse Code (CW) operation.
  
 ^ Acronym ^ Meaning        ^ ^ Acronym ^ Meaning        ^
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 | PWR     | Power | | PWR     | Power |
 | NR      | Near  | | NR      | Near  |
 +| WX      | Weather |
 +| Q??     | This is a standard Q Code [[https://en.wikipedia.org/wiki/Q_code#Amateur_radio|https://en.wikipedia.org/wiki/Q_code#Amateur_radio]] |
js8.txt · Last modified: 2023/06/27 18:53 by m7tws