I setup one of my Tablos to use WiFi.
The Tablo is on the second floor, and the wireless router is on the first floor.
There's around 40 feet of distance between the 2.
There's 1 floor/ceiling, and 2 inner walls between the 2.
Can't use 5GHz, cuz that frequency doesn't go thru obsticles, like floors, ceilings, walls, or furniture very well.
We use 2.4GHz frequency with 'G Only' mode.
We found that 2.4GHz frequency with 'Any' mode, which includes A, B, G, and N causes the Tablo to disappear from the network when not in use.