You are the radio amateur, not the page. It only transmits at the press of a button, with a transmit time limit. Replies to queries and heartbeat acknowledgements can be switched off and start off. Your computer's clock has to be right (NTP); JS8 depends on staying in sync.
Station
Saved texts (one per line)
Macros: <MYCALL> <MYGRID4> <MYGRID12> <MYINFO> <MYSTATUS> <MYHB> <MYCQ> <MYREPLY> <MYIDLE> <MYVERSION> <CALL> <SNR> <TDELTA>. They work in all texts and in the input box.
Here on the remote station audio, frequency and PTT come from the station, so you need no sound card or cable. It only transmits while you are operating the station and are allowed to transmit there; the station's dead man's switch and transmit time limit apply as always. The clock is the station's.
Audio
Input (from the radio)
Default
Output (to the radio)
Default
The device list fills after โStart audioโ. On Windows: Sound settings โบ USB codec input without effects; the page switches off echo cancellation and noise suppression itself.
Radio
CAT protocol
PTT
Baud
4800 9600 19200
38400 57600 115200
CI-V address hex
Typical: Digirig or sound card interface โ PTT โRTSโ; Icom โ โIcom CI-Vโ with the radio's CI-V address (IC-7300: 94); Yaesu and Kenwood โ PTT โCAT commandโ or โRTSโ, depending on the cable. Without CAT you enter the frequency by hand in the header bar. When the port opens, RTS and DTR are switched off at once so nothing keys up.
Apply radio settings
Automation
Display and alerts
Report spots
The browser can't do UDP; the page collects for two minutes and sends the spots to afu.tools/api/v1/js8/spots, which passes them on as PSKReporter and JS8NET datagrams (nothing is stored).
Not possible in the browser: APRS-IS, a TCP/UDP API for other programs, frequency calibration.