Thank you for your comments.
This is the current situation:
The TV taking its tv signal direct from the aerial, without the Fox attached, registers about 70 channels.
The TV with the aerial going first to the Fox and then on to the TV can not see any channels.
The TV using the Fox as a tuner can not see any channels.
I hope that is clearer for you.
I have just browsed to the Fox and found the following messages:
26/03/2024 17:30:57 - DetectAds: Contents sharing disabled, Enable via Humax Settings menu (11 instances)
Your Humax crashed and some packages may have been disabled as a precaution.
... view the crash.log for more details.
29/03/2024 04:23:07 - Automatically upgraded package webif from 1.5.2-10 to 1.5.2-11
https://hummy.tv/forum/threads/10760/
29/03/2024 04:23:08 - Automatically upgraded package jim from 0.82-4 to 0.82-5
Tunefix was not installed. I have now installed both Tunefix and Tunefix-update.
The crash log only contains this note: Humax crashed at Thu Mar 28 22:09:21 UTC 2024 - Uptime: 923
I hope the above helps in finding the cause of the missing channels.
In the meantime, I have restarted the Fox. An error message shows there are no channels. On running the search, no channels are found.
Robin