outdoor (wireless) > indoor display (USB) > Rpi (5GHz)> wifi router
Rpi connects to the main router via 5Ghz port, which has all worked fine, apart from when the weather stations batteries die - then the webpages on the pi have still been available, but with no updated data.
As happened mid summer for the second time - obviously cheap batteries, because they normally last 18 months.
For the past few weeks, I have been regularly been unable to view the webpage, to get it back I have had to reboot the pi - after which I would regain access for an hour or so. I had it in mind that there might be an issue with the 5Ghz wifi link. Looking at the pi, its activity LED has continued to flash, even though there is no actual contact.
A few days ago the display for the weather station stopped updating data from the outdoor sensors, so obviously the batteries were dead yet again. Very wet and boggy out there, so I left it until today.
I fitted new batteries this morning and the 5Ghz connection to the pi has been rock solid ever since. Why would the weather station's outdoor unit's batteries dieing, cause the pi's 5Ghz wifi to come to a stop?