Can I listen to Plymouth Police Department on a police scanner?

No. Plymouth Police Department has fully encrypted their radio communications using P25 AES-256. No consumer scanner can decode encrypted transmissions.

Why did Plymouth Police Department encrypt their radio?

Police departments typically cite officer safety and operational security as reasons for encryption. However, encryption also eliminates public oversight, prevents journalists from monitoring police activity, and can harm emergency coordination with other agencies.

Can Hennepin County reverse the encryption decision?

Yes. Encryption is a policy choice, not a technical requirement. Multiple communities have successfully reversed encryption decisions through public pressure, city council advocacy, and coalition building. See our guide on fighting encryption for specific strategies.

What can I do about Plymouth Police Department encryption?

You can: 1) Contact your local elected officials to express concerns, 2) Attend city council meetings during budget discussions, 3) File FOIA requests for radio recordings, 4) Join or build a local coalition advocating for transparency, 5) Support legislation requiring public access to police communications.

Police Department Fully Encrypted

Plymouth Police Department

Q: Is Plymouth Police Department radio encrypted?

Yes. Plymouth Police Department uses P25 AES-256 encryption. This agency encrypts all of their radio communications, including routine dispatch. The public, journalists, and even other first responders cannot monitor their activities.

Hennepin, Minnesota

Encryption Details

Encryption Type P25 AES-256

Scope Car to Car for LE

Technical Details P25 on ARMER

Verified Talkgroup Data

Verified Mar 6, 2026 Moderate confidence

22 Total Talkgroups

15 Encrypted

7 Unencrypted

68% Encrypted

Radio System: Allied Radio Matrix for Emergency Response (ARMER)

View 15 talkgroups

DEC	Alpha Tag	Description	Status
11220	HCEPPD3	Police Patrol 3	Encrypted
12428	SPPD 12428	Police 12428	Encrypted
2986	MPPD-2E	Police 2E Dispatch	Encrypted
33818	NC SPPD ADM	St Peter Police Admin	Encrypted
12424	SPPD 12424	Police 12424	Encrypted
12426	SPPD 12426	Police 12426	Encrypted
12442	SPPD 12442	Police 12442	Encrypted
12440	SPPD 12440	Police 12440	Encrypted
11190	HCEPPD1E	Police Patrol 1	Encrypted
11194	HCEPPDTRL3E	Police Patrol 3	Encrypted
12438	SPPD 12438	Police 12438	Encrypted
12444	SPPD 6e	Police 6 Secure	Encrypted
3008	MPPD-ECOM1	Police E Comm 1	Encrypted
2988	MPPD-3E	Police 3E Dispatch	Encrypted
3014	MPPD-1E	Police 1E Dispatch	Encrypted

What This Means

This agency encrypts all of their radio communications, including routine dispatch. The public, journalists, and even other first responders cannot monitor their activities.

Impact on Transparency

Journalists cannot monitor police activity for breaking news or investigative reporting
Community members cannot track police response to incidents in their neighborhood
Researchers cannot study police communication patterns and response times
Other first responders may face interoperability challenges during emergencies

Plymouth Police Department Hennepin, Minnesota

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Encryption Details

Verified Talkgroup Data

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