Channel Technologies Group

Channel Technologies Group (CTG) is a California-based company that designs and manufactures piezoelectric materials and transducers for military and commercial market customers.[2]

Channel Technologies Group
Naval technology
Electronic/electrical manufacturing
FounderRobert F. Carlson and Bob Callahan
Area served
Key people
Ralph L. PhilipsCEO
Ceramics transducers sonar
Navigation systems
OwnerBlue Wolf Capital Partners LLC
Number of employees
approx. 250[1]

Based in Santa Barbara, Calif. and with a second manufacturing site in Bolingbrook, Ill., Channel Technologies Group (CTG) first began manufacturing piezoelectric ceramics in 1959. Since that time, CTG has grown, allowing CTG to expand its product offerings to include piezoelectric ceramics, piezoelectric single crystals, transducers, turnkey sonar systems and electro-optical calibration and testing equipment. Its products are used in a multitude of applications, and by a wide variety of end-users including medical device manufacturers, marine explorers and energy companies. CTG also services customers in the defense industry, including several departments of the U.S. Navy and many leading defense contractors.

CTG’s 150,000 sq. ft. of manufacturing space includes a dedicated prototype line, materials research lab, machine shop and testing facilities.

Through CTG’s enterprise resource planning (ERP) system, orders can be managed from one central location and individual components can be tracked from creation through development. This system allows prioritizing developing products in a lean manufacturing environment.[3][4]

In 2016, after losing over $10 million on long-term contracts, the company declared bankruptcy.[2]


  1. ^ "Blue Wolf Acquires Channel Technologies Group". Channel Technologies Group. Archived from the original on 2013-05-08.
  2. ^ a b Stech, Katy (18 October 2016). "Defense Supplier Channel Technologies Group Files for Chapter 11". The Wall Street Journal. Retrieved 5 May 2018.
  3. ^ "CTGreprintMTRMarch2012" (PDF). Channel Technologies Group. Marine Technology Reporter. Archived from the original (PDF) on 2013-08-08.
  4. ^ "Channel Technologies Group Awarded ISO 9001:2008 Certification". Manufacturing Close-Up. Archived from the original on 28 July 2014. Retrieved 31 March 2012.