JS8 frequencies for every band
JS8 dial frequencies from 160 m to 2 m, as JS8Call ships them. JS8 carries free text on the FT8 waveform, so it sits a few kilohertz away from the FT8 watering holes.
JS8
Dial frequenciesSources: JS8Call source code, FrequencyList.cpp (default frequency list)
JS8Call adds what FT8 leaves out: free messages chained over several periods, heartbeats that show who is listening, relays through a third station and messages stored for someone who is not on the air. It needs the same accurate clock as FT8.
Most JS8 activity is on 40 and 20 m. On 17 and 6 m the default dial is the same as the WSJT-X FT4 one; there the two modes share the waterfall and a quick glance tells them apart by period length. Because messages can be relayed and stored, a station that is off the air right now can still receive what you send.
The JS8 table has 11 entries, on 160 m, 80 m, 40 m, 30 m, 20 m, 17 m, 15 m, 12 m, 10 m, 6 m, and 2 m.
No entry for 60 m: the source gives none there.
Dial frequencies are the USB suppressed-carrier setting of the radio; the signals sit a few hundred hertz to about 3 kHz above. Band plans and national rules prevail.