1) Safety: the WiFi router antenna is mounted about a metre and a half above my head, and almost directly above my head, antenna is vertical and radiating straight out, not down. So I think I'm in a side lobe if anything. The far more powerful WiMax antenna is maybe 5 metres above our heads out on the rooftop and is directional out over the rooftop to the east.
2) Security: the maximum available on this router. WPA-PSK etc. The name of the installation is also one digit away that from used by some ten or twelve municipal hotspots in the nearest town, 5kms away and 600' down the mountain. So not immediately identifiable to me or my house. A hotspot has just appeared next door with a very similar name but completely unguarded. Hopefully rather than trying to crash mine, people will use that.
Has anyone found some simple software which will show what a WiFi router is being accessed by at any time ? I too would like to know.