STU-III and SECTEL Secure Telephone Unit

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Welcome to the STU-III and SECTEL Secure Telephone Unit page.

This page is under construction.

I need your help as a reader for information.  I am looking for information, manuals etc ... for all types of STU equipment.  Of particular interest at this time is the STU-III SECTEL 2500, 3500 and SECTEL 9600 models (manuals would be nice to start with!).

Additionally, any information on STU key management, specially on the commercial units,  would be appreciated.

If you have anything that you are willing to contribute, please use the link bellow and send me an e-mail.

Thank you.

Please click here to send your comments or suggestions.

Revised: June 08, 2017
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