An unbiased data sheet
The codename ‘Tempest’ shielding relates to NATO secure communications, the sensitive nature means that the actual shielding levels are not common knowledge.
The codename ‘Tempest’ as in relation to military/governmental secure communications relates to radiated and conducted guaranteed shielding & insertion loss (for conducted signal) performance
To further complicate this situation there are different Tempest applications and different levels of minimum required attenuation for various applications
Given that the actual level of shielding is not disclosed then to offer a commercial product for this application only the highest performance is deemed to be good enough.
Achievable levels of shielding are considered to be:
Close attention to doors (twin knife), vents, capacitive filters, coax ports and wave guides will be required to achieve the above levels of guaranteed shielding performance.
The calibration and verification should be by a competent independent test body and should be done in a rigorous and uncompromising manner.
