High Intensity radiated field (HIRF) TESTING

 High-Intensity Radiated Field (HIRF)

external environment protection for civil aircraft

DNB Engineering Inc. is a leader and recognized expert in Electromagnetic Compatibility certification testing with unique capabilities, including the latest requirements of HIRF (High-Intensity Radiated Field) Testing.  

We use the advanced system in our RF Reverberation Chambers to provide testing services in frequency ranges between 100MHz and 40GHz. With 30kW Pulsed Cavity Oscillators and 10kW Pulsed TWTA, our equipment provides Peak field strength level up to 25,000V/m. The average field strength level is up to 2,000V/m.

DNB’s custom-built Hardware and Software systems allow us to furnish fully automated Radiated Susceptibility testing services using the Mode Tuned Methods (RTCA DO-160 E, F MIL-STD-461) or Mode Stirred Methods (RTCA DO-160G).

The use of dedicated RF Amplifiers with output power up to 30,000W (Peak) allows us to perform system-level tests for very severe Radiated Field levels as required by RTCA DO-160, MIL-STD-464, and the Army’s ADS-37A-PRF specification. EUT’s size can vary from a matchbox to a firetruck. The RF Reverberation Chambers’ usable volume can facilitate entire Aircraft Flight Control Systems or Helicopter Cockpit Equipment for full Level A Flight Control Certification, tested with the highest RTCA DO-160 Section 20 RS Categories G & L.

DNB Engineering Inc. is constantly working on the implementation of the newest test methods. We have a long list of clients we have performed system-level Radiated Emission tests using the Reverberation Chamber per RTCA DO-160G.  

DNB is capable of performing Shielding Effectiveness testing for materials or equipment, using the Nested Reverberation Chamber method per SAE-ARP5583A specification and IEC 61000-4-21: EMC part 4.

Our control and measurement system captures real-time test data from all equipment involved in the testing process, such as field monitoring antennas, fiber optic coupled field probes, and forward power measurement systems.  We can integrate the customer EUT control system into our RF Reverberation Chamber’s local area network, allowing automated test data acquisition processing. For customer convenience, we provide an Android-based device for test process monitoring, control, and video monitoring/recording system.


  • Field Strength Levels up to 13,000 V/m
  • Fully Automated Testing
  • Real-time Customer Monitoring
  • Chamber’s dims 30’W x 25’L x 14’H
  • Uniform field area: 18’W x 18’L x 9’H
  • 30kW Pulsed Cavity Oscillators
  • 10kW TWT Amplifiers
  • RTCA DO-160 G Rev. A-G, specifically Categories G & L
  • Large Double Door Entrance
  • Man Door


  • Field Strength Levels up to 25,000 V/m
  • Fully Automated Testing
  • Real-time Customer Monitoring
  • Chamber’s dims: 12’W x 12’L x 10’H
  • Uniform field  area: 8’W x 8’L x 5’H
  • 30kW Pulsed Cavity Oscillators
  • 10KW TWT Amplifiers
  • RTCA DO-160G Rev. A-G,
  • specifically Categories G & L
  • MIL-STD-464
  • ADS-37A-PRF
  • 100 MHz to 40 GHz

give us a call if specific regulations are not listed here.

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