Questions tagged [ft8]
For questions specific to the FT8 mode
36 questions
0 votes
0 answers
28 views
FTdx3000 and windows 11
I have recently purchased a new Windows 11 laptop and I am having issues with JTDX / FT8 not switching the radio to DATA USB ? Radio Yaesu FTdx3000. All were working fine on old HP desktop PC and ...
3 votes
2 answers
2k views
What do the WSJT-X split frequency options actually do under FT8?
Maybe I have this all wrong, but as I understand FT8, we're all communicating within a slice of the band ~3 kHz wide. Within this slice, we each have our own sub-slice, and the location of my slice is ...
- 177
0 votes
2 answers
426 views
FT8 not displaying
Why can't I decode the FT8 when using WSJT-X on HF? At first, it decoded one but then, nothing showed up. I didn't change anything. I can still hear the FT8 signals clearly but the software won't ...
- 823
3 votes
1 answer
153 views
Help implementing FT8 crc check in Rust
I'm playing around with implementing portions of the FT8 protocol in Rust. I'm having trouble with the CRC algorithm. Here is my not yet working attempt: https://gist.github.com/JohnRudolfLewis/...
- 171
4 votes
2 answers
472 views
Why is SNR for FT8 defined using the noise power in the 2500 Hz channel containing the FT8 signal?
I see the term "SNR_2500" is often use to make it clear. Is it useful to use this SNR definition in some contexts? Is this kind of convention used in other digital modes or communication ...
- 531
4 votes
1 answer
867 views
What does <...> mean in FT8?
I caught this in FT8, did someone just enter <...> as their call sign or is this code for something?
- 1,411
2 votes
0 answers
845 views
wsjt-x problems with windows 11 Icom 7300 USB sound hangs
Description of problem: WSJT and JTDX both stop receiving sound after about 2-3 hours when running on Win 11 with ICom 7300. This did not happen with my Raspberry Pi running the same rig. The ...
- 21
1 vote
3 answers
299 views
Can only use WSJTX in sudo
I am trying to use WSJT-X to make FT8 Contacts on Pop! OS (Ubuntu-based) and with an IC-7300. I entered all the correct settings into WSJT-X, but it could not connect to my transceiver, and WSJT-X ...
- 23
6 votes
2 answers
1k views
How is FT8 modulated with both upper side band and FSK?
This Wiki shows FT8 mode is USB and its modulation is FSK. I don't get the difference ...
- 311
1 vote
1 answer
1k views
How to determine the problem with my FT8 TX in WSJT-X?
I am trying to QSO on 17m, 20m, 40m, and 160m with an IC-756PRO. I’m using WSJT-X in FT8 mode via a CI-V for CAT control and SignaLink for audio. System sound settings appear correct. Control tests of ...
- 253
2 votes
2 answers
195 views
Fox & Hound or regular FT8 for ARRL International Digital Contest?
So I'm thinking about casually working the ARRL Int'l Digital contest this weekend to try to pick up (hopefully they'll confirm!) a couple of new DCXX entities so I can get my DXCC (almost there). ...
- 1,099
1 vote
3 answers
2k views
Linux Alternative Time Sync-ing for JS8 or FT8
I was learning about the time drift set and correct features of JS8Call and wondering about an alternative. Assume I have a wrist watch that loses 1 second a month and that it's been sync-ed to an NTP ...
- 301
3 votes
2 answers
326 views
Can someone without privileges on a band operate FT8 on it using the callsign of a ham who does and is present?
I have an Extra license. Is it legal for my dad (who has a Technician license) or my mom (who is not licensed) to operate FT8 on 20 meters using my call sign, if I am physically present at the control ...
- 614
1 vote
2 answers
11k views
wsjt-x problems with windows 11
When upgrading from previous version of the windows operating system to windows 11 wsjt-x stops receiving the output from the radio. What should I look for?
- 211
4 votes
2 answers
482 views
How do you log (or not) "busted" FT8 QSOs?
When do you decide (when NOT in a contest) to log an "incomplete" FT8 QSO? For example, something like this: ...
- 1,099