Historical Electronics Museum, Inc. - History of the Nation's Defense Electronics
electronic countermeasures
Countermeasures Development

Ever since man developed the shield to counter the sword, countermeasures   have been a key part of warfare. Countermeasures follow the introduction of a new weapon or tactic, creating a cycle of a hostile move followed by counter move. With Germany's use of radar and radio during the early battles of World War II the Allies developed a new type of countermeasure - what we now know as Electronic Countermeasures (ECM).

Following the introduction of a hostile weapon, only a short time is allowed to design, develop, test, and deploy the countermeasure, because during this time the lives of our war fighters are at risk. To the credit of our ECM engineers this time has been kept to a minimum. Today, as hostile encounters become more sophisticated, integrated and complex new countermeasures are developed. The Countermeasures Gallery presents an overview of evolution of ECM from the early days of WWII to the present.

In This Exhibit:
  • See World War II Army Air Force and U.S. Navy jamming and receiving gear
  • Hear an enemy SA-2 (SAM) missile lock on to its target
  • Learn how chaff and decoys are used to fool enemy radar
  • Examine modern multi-configurable counter measure pods
military jamming equipment


The National Electronics Museum is organized into thirteen related exhibit galleries:
1. Fundamentals Gallery
2. Communications Gallery
3. Early Radar Gallery
4. Cold War Radar Gallery
5. Modern Radar Gallery
6. Countermeasures Gallery
7. Under Seas Gallery
8. Electro-optical Gallery
9. Space Sensor Gallery
10. Past Gallery
11. Web Gallery
12. WWII Radar Kiosk
13. Cold War Radar Kiosk

Click here for an Adobe pdf showing the gallery layout

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