I’ve discovered that the JTDX Control Panel only works (for me) if I follow this sequence:
- Open the UDP BandMap.
- On the UDP BandMap menu, click Config -> Show JTDX Control Panel
- On the UDP BandMap menu, click Start -> JTDX … and wait for it to launch fully (it needs at least 8 seconds on my system so I have configured it to wait 10 seconds).
Now I can click the JTDX Control Panel buttons to change bands or modes: JTDX and the radio change quickly although the JTDX control panel button coloring takes a second or two to catch up.
If instead I start JTDX from its desktop icon, the JTDX Control Panel shows Control Panel not connected and doesn’t work. Also, if I start JTDX before opening the JTDX Control Panel, the control panel looks OK (no red warning) but doesn’t work.