Some may wonder how much data is used by a Tempest station. I have a Tempest station on my RV. In addition to the Tempest sensor I have an AIR sensor for indoor measuring so my station will use a little more data than just a Tempest sensor only station so think of this as an upper bound on a typical Tempest station.
I have my Tempest station tethered to a Netgear Nighthawk access point on AT&T. During the week shown there was no other device using the access point so this is only Tempest + AIR data use.
Date Time Usage Type Usage (kB) 26-Sep 11:21 PM Mobile data 2094 26-Sep 9:21 PM Mobile data 2094 26-Sep 7:21 PM Mobile data 2115 26-Sep 5:21 PM Mobile data 2122 26-Sep 3:21 PM Mobile data 2119 26-Sep 1:21 PM Mobile data 2128 26-Sep 11:21 AM Mobile data 2125 26-Sep 9:21 AM Mobile data 2126 26-Sep 7:21 AM Mobile data 2103 26-Sep 5:21 AM Mobile data 2102 26-Sep 3:21 AM Mobile data 2101 26-Sep 1:21 AM Mobile data 2101 25-Sep 11:21 PM Mobile data 2101 25-Sep 9:21 PM Mobile data 2103 25-Sep 7:21 PM Mobile data 2105 25-Sep 5:21 PM Mobile data 2124 25-Sep 3:21 PM Mobile data 2119 25-Sep 1:21 PM Mobile data 2121 25-Sep 11:21 AM Mobile data 2121 25-Sep 9:21 AM Mobile data 2111 25-Sep 7:21 AM Mobile data 2104 25-Sep 5:21 AM Mobile data 2091 25-Sep 3:21 AM Mobile data 2092 25-Sep 1:21 AM Mobile data 2099 24-Sep 11:21 PM Mobile data 2098 24-Sep 9:21 PM Mobile data 2094 24-Sep 7:21 PM Mobile data 2112 24-Sep 5:21 PM Mobile data 2117 24-Sep 3:21 PM Mobile data 2121 24-Sep 1:21 PM Mobile data 2121 24-Sep 11:21 AM Mobile data 2134 24-Sep 9:21 AM Mobile data 2136 24-Sep 7:21 AM Mobile data 2121 24-Sep 5:21 AM Mobile data 2133 24-Sep 3:21 AM Mobile data 2125 24-Sep 1:21 AM Mobile data 2120 23-Sep 11:21 PM Mobile data 2113 23-Sep 9:21 PM Mobile data 2088 23-Sep 7:21 PM Mobile data 2090 23-Sep 5:21 PM Mobile data 2094 23-Sep 3:21 PM Mobile data 2089 23-Sep 1:21 PM Mobile data 2097 23-Sep 11:21 AM Mobile data 2100 23-Sep 9:21 AM Mobile data 2087 23-Sep 7:21 AM Mobile data 2081 23-Sep 5:21 AM Mobile data 2090 23-Sep 3:21 AM Mobile data 2093 23-Sep 1:21 AM Mobile data 2092 22-Sep 11:21 PM Mobile data 2094 22-Sep 9:21 PM Mobile data 2100 22-Sep 7:21 PM Mobile data 2110 22-Sep 5:21 PM Mobile data 2122 22-Sep 3:21 PM Mobile data 2126 22-Sep 1:21 PM Mobile data 2124 22-Sep 11:21 AM Mobile data 2131 22-Sep 9:21 AM Mobile data 2126 22-Sep 7:21 AM Mobile data 2107 22-Sep 5:21 AM Mobile data 2098 22-Sep 3:21 AM Mobile data 2100 22-Sep 1:21 AM Mobile data 2099 21-Sep 11:21 PM Mobile data 2107 21-Sep 9:21 PM Mobile data 2110 21-Sep 7:21 PM Mobile data 2121 21-Sep 5:21 PM Mobile data 2128 21-Sep 3:21 PM Mobile data 2123 21-Sep 1:21 PM Mobile data 2125 21-Sep 11:21 AM Mobile data 2130 21-Sep 9:21 AM Mobile data 2130 21-Sep 7:21 AM Mobile data 2115 21-Sep 5:21 AM Mobile data 2112 21-Sep 3:21 AM Mobile data 2109 21-Sep 1:21 AM Mobile data 2098 20-Sep 11:21 PM Mobile data 2102 20-Sep 9:21 PM Mobile data 2098 20-Sep 7:21 PM Mobile data 2117 20-Sep 5:21 PM Mobile data 2129 20-Sep 3:21 PM Mobile data 2139 20-Sep 1:21 PM Mobile data 2137 20-Sep 11:21 AM Mobile data 2133 20-Sep 9:21 AM Mobile data 2127 20-Sep 7:21 AM Mobile data 2092 20-Sep 5:21 AM Mobile data 2087 20-Sep 3:21 AM Mobile data 2090 20-Sep 1:21 AM Mobile data 2089 Total: 177,252 Average kB/day 25,322
This is as measured by my carrier so I assume it is accurate. I don’t really know why the data amount varied from day to day since it doesn’t seem to correlate with the amount of rain detected.