Ongoing: devices that do not show as connected to WiFi on RBR850 system

FURRYe38 , one night in with no problems after removing the satellite RBS850 from the bedroom 1!! I'll keep watching.

Please anyone with ideas -- in anticipation this works, the question becomes, do I need a second satellite? So I went around the house measuring RSSI and SNR today at the locations where people are likely to be using WiFi, and here is what I got:

Basement:

Desk next to router (RSSI:-37, SNR:57) EXCELLENT

TV room in basement (RSSI:-62, SNR:32) VERY GOOD

Basement office (RSSI:-62, SNR:32) VERY GOOD

1st floor:

Office/Desk near RBS8500 (RSSI:-45, SNR:48) EXCELLENT

Living room (RSSI:-71, SNR:24) OK/GOOD? What I read recommendation is SNR:25+

Kitchen (RSSI:-63, SNR:32) VERY GOOD

2nd Floor:

Bedroom 1 (RSSI-65, SNR:28) VERY GOOD

Bedroom 2 (RSSI:-69, SNR:26) VERY GOOD

Bedroom 2 (RSSI:-83, SNR:10) POOR/MARGINAL SIGNAL

The worst are living room/1st floor and bedroom2/2nd floor, both of which are in the front of the house. The router in the basement is near the front of the house, and the RBS850 is near the back of the house.

Are there any guidelines that might help me avoid the clashing of signals that may prove to be the cause of the WiFi disconnects? I know router and satellites should be at least 30 feet from router, it seems I should have the 2nd satellite somewhere to help in the living room and especially Bedroom 2. Assuming the disconnects go away from only having 1 satelllite, is there a way to know where to put the 2nd satellite, or just try it; or given my measurements would you not add the second satellite?

Thanks for any advice!