Hi @josh77,
No, that’s not by design. I’m trying to replicate your issue locally but am unable to unfortunately. This makes me wonder if the Wi-Fi router (or DHCP server) you are using is being a little aggressive in how it de-provisions IP addresses if something goes idle?
Also, you might want to check on the status of the Notehub connection with:
{"req":"hub.status"}
And verify connected:true prior to taking any readings from card.wireless? Just a thought in case there are some delays in getting an IP from the router hence causing fluctuations in the signal strength readings?
Rob