WSJT-X with FT-991A on Linux
Installation
sudo dnf install wsjtx
Radio settings
Menu | Setting | Value |
---|---|---|
029 | 232C RATE | 34000bps |
031 | CAT RATE | 34000 |
062 | DATA MODE | OTHERS |
064 | OTHER DISP (SSB) | 1500Hz |
065 | OTHER SHIFT (SSB) | 1500Hz |
070 | DATA IN SELECT | REAR |
DT GAIN
The goal is to use the highest value, but with no visible ALC
- Set the radio
METER
toALC
- Use the
TONE
button in WSJT-X to transmit - Raise the
DT GAIN
until you seeALC
- Then dial it back down until the
ALC
is no longer visible - Stop transmitting (ie: click the
TONE
button again)
Lots of people will say to keep DT GAIN at or below 10. I tried this, and
virtually no one ever heard my signals. Using higher values made a enormous
difference in my setup. Note as you approach 75W
you will probably see your
ALC
start to increase, at which point you’ll need to reduce your DT GAIN to
prevent visible ALC
.
MONI
The radio monitor can be used to verify that the computer is able to transmit
using the radio’s USB sound card. This is particularly useful when using the
software TONE
button. Set the MONI
to 50
and listen to the tone to ensure
it’s clear and free from clipping or distortion. Just remember to turn it back
off
when you’re done testing or it’ll drive you nuts.
RF POWER
The goal is to use the lowest power possible.
- Start with
5W
- Work your way up as needed
Software settings
Pwr
The volume slider on the far right side. I set this to half way.
Rig control
I use Rig
which causes the software to put the radio into split VFO mode so
it listens on one frequency and transmits on another.
General
Radio
Audio
General tips
- Be careful with USB hubs. I was using one with my Lenovo T490s and was all the sudden not able to get any audio from the radio. Eventually I realized I had moved my office around and plugged the radio in via a hub. Plugging it directly into the radio fixed it right up. I presume my hub is rubbish.
- Note the Rig Mode used by the software. I made contacts with it set to None, but I had
way better luck after setting it to
Rig
, though that also coincided with using a much higher DT GAIN. Maybe I should test to isolate the two. - Try to line up your transmit frequency to be offset from the receive (red and green). I can’t say I’ve noticed a big difference, but it’s considered a polite practice from what I gather.