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L3Harris | ESSCO (ESSCO) is the world's premier designers and manufacturers of ground-based radomes, reflectors and RF composite structures.

Since its founding in 1961, ESSCO has successfully produced and installed over 5,000 ground-based radomes and more than ten of the world's most precise radio telescopes and reflectors.  Actual field experience and extensive testing by our technical team and by our customers, has proved the accuracy of our analytical predictions and the performance of our products.  We continue to expand our products and portfolio and to develop capabilities for even a broader range of products and services including:

ESSCO headquarters is a163,210 square foot manufacturing facility in Ayer, MA.

In 1998, L3, a Fortune 250 company (NYSE: LLL) acquired ESSCO. L3 is a top ten defense contractor in the United States a prime contractor in aerospace systems and national security solutions. L3 is also a leading provider of a broad range of communication and electronic systems and products used on military and commercial platforms. The acquisition provided both companies with the financial stability to fund continued growth and product development, as well as immense technical expertise and resources. ESSCO operates as a subsidiary of L3 Technologies, Inc.

In 2018, L3 Technologies and Harris Technologies merged to create L3Harris. L3Harris is an agile global aerospace and defense technology innovator, delivering end-to-end solutions that meet customers’ mission-critical needs. We provide advanced defense and commercial technologies across air, land, sea, space and cyber domains. We bring speed, innovation and flawless execution together with our commitment to make the world more secure.