Tempest Power Filters

To ensure compliance with the international performance standards required to protect key infrastructure installations, our range of Tempest Power Filters are designed to prevent eavesdropping, as well as providing surge protection.

The level of Tempest protection on our filters is in accordance with NATO SDIP-27 Level A (formerly AMSG 720B) and USA NSTISSAM (National Security Telecommunications and Information Systems Security Advisory Memoranda) Level 1. And surge protection in accordance with either MIL-STD 188-125-1 for military projects, or IEC 61000-4-24, severity levels 1 & 2 for commercial applications.

Tempest Filter requirements are different to those required for HEMP Power Filters, with the main requirement being to prevent eavesdropping of confidential information. This is achieved by a combination of a shield to prevent the direct radiation of signals which may be picked up, and by a Tempest Filter to remove conducted intelligible signals on all electrical cables leaving the shielded area which may be superimposed on the cables and interrogated by unauthorised personnel.

Our standard filters shielding effectiveness performance is designed accordance with requirements of 100dB from 100kHz to 1GHz.  Tailored performance requirements available to 40GHz available on request.

Other filters within our product range include Tempest MIL-STD Filters, Tempest Low Leakage Filters, Tempest Mil-STD Low Leakage Filters, EMP Power Filters, EMP MIL-STD Filters, EMP Low Leakage Filters, EMP Mil-STD Low Leakage Filters, RF Filters, Control Line Filters and Signal Line Filters.