TETRA Encrypted Agencies
5 public safety agencies across the United States use TETRA encryption on their radio communications.
About TETRA
Terrestrial Trunked Radio with TEA encryption algorithms. Common in Europe, rare in US.
Technical Details
TETRA standard with TEA1, TEA2, or TEA3 encryption algorithms.
Common Usage
International agencies, some US federal
States with Most TETRA Agencies
All TETRA Agencies
Browse all 5 agencies using this encryption standard.
| Agency | State | County | Type | Scope |
|---|---|---|---|---|
| City of Hamilton Police Department | GA | Harris | police | Fully Encrypted |
| Harris County Fire/EMS | GA | Harris | fire | Fully Encrypted |
| Harris County Sheriff's Office | GA | Harris | sheriff | Fully Encrypted |
| Pine Mountain Police Department | GA | Harris | police | Fully Encrypted |
| Waverly Police Department | GA | Harris | police | Fully Encrypted |
What This Means for Transparency
Not Publicly Accessible
TETRA encryption cannot be decoded with consumer radio equipment. 5 agencies using this standard have effectively blocked public access to their radio communications.
Take Action
If your local agency uses TETRA encryption, you can advocate for transparency. Contact elected officials and attend public meetings.
Learn How to Fight BackFrequently Asked Questions
What is TETRA encryption?
Terrestrial Trunked Radio with TEA encryption algorithms. Common in Europe, rare in US.
Can TETRA be decrypted with a consumer scanner?
No. TETRA cannot be decoded with consumer radio equipment. The 5 agencies using it have effectively blocked public scanner access to their communications.
How many police, sheriff, fire, and EMS agencies use TETRA?
3 police departments, 1 sheriff's offices, 1 fire departments, and 0 EMS agencies use TETRA encryption, out of 5 agencies total.
Which state has the most agencies using TETRA?
Georgia leads with 5 agencies using TETRA encryption.
What's the typical use case for TETRA?
International agencies, some US federal
Take Action for Transparency
Your voice matters. Here are concrete ways to advocate for open police communications in your community.
Contact Your Representatives
Use our templates to email your local officials about police radio encryption policies.
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Public Testimony
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