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Your Mission Critical

Reliable. Quality. Professional. Value.

Communications Experts
Your Mission Critical

Reliable. Quality. Professional. Value.

Communication Experts
Your Mission Critical

Reliable. Quality. Professional. Value.

Communication Experts

Products & Services

Authorized Dealer

Whatever your communication needs are, we can help you achieve them. Call us at 888-264-8967, stop by one of our office locations or email us.

Contact Us Today

Jacksonville

Corporate Office
2270 West Morton Avenue
Jacksonville, IL 62650
Phone (217) 243-2300
Fax (217) 243-6039

Effingham

303 East Jefferson Avenue
Effingham, IL 62401
Phone (217) 347-6560
Fax (217) 347-6564

St. Louis

723 S. Second St.
Greenville, IL 62246
Phone (217) 272-4490
Fax (217) 243 6039

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© 2025 Global Technical Systems, Inc. All rights reserved. | Factory authorized WHELEN, KENWOOD, EF JOHNSON, HARRIS, TAIT, ZETRON, EVENTIDE, FENIEX and UNICATION dealer for Central & Southern Illinois and Eastern Missouri. All trademarks are property of their respective owners.