City of Alvin
Brazoria, Texas
How we verified this
As of August 2026 RadioReference lists Alvin Police 2 and Police Tactical 1 as encrypted on TxWARN while Alvin Police Primary (dispatch), Police Special Operations, Fire and EMS remain in the clear, matching the recorded scope.
Encryption Details
Brazoria County Context
Of the 2 public-safety agencies we track in Brazoria County, City of Alvin is currently the only one we have flagged as encrypted.
See every agency we track in Brazoria County → County encryption overview →
What This Means
Only the tactical side is closed. SWAT callouts and sensitive operations are encrypted; ordinary calls for service may still reach a scanner.
Frequently Asked Questions
Is City of Alvin radio encrypted?
Yes — City of Alvin's radio system runs on P25 AES-256 encryption. Only the tactical side is closed. SWAT callouts and sensitive operations are encrypted; ordinary calls for service may still reach a scanner.
Can I listen to City of Alvin on a police scanner?
Partially. City of Alvin encrypts its tactical channels, so some channels may still be accessible. Check RadioReference for specific talkgroup status.
Why did City of Alvin encrypt their radio?
Ask why, and the answer is usually officer safety, sometimes operational security. What is harder to obtain is any documented case in Brazoria County where an open channel caused harm. The costs need no such documentation: reporting on other agency response slows down, and mutual-aid coordination gets more awkward, immediately.
Can Brazoria County reverse the encryption decision?
Yes. Encryption is a policy choice made by department leadership or elected officials, not a technical requirement, so it can be reversed the same way. Public pressure, city council advocacy, and organized local coalitions have reversed encryption decisions elsewhere.
What can I do about City of Alvin encryption?
Start local: show up when Brazoria County officials discuss the budget for City of Alvin, and ask specifically why full encryption was chosen over a delayed feed or tactical-only approach. File a FOIA request for recordings or policy documents, and connect with others nearby who want the same information — a coordinated ask carries more weight than an individual one.