Martinez Police
Contra Costa, California
How we verified this
RR DB shows all Martinez PD voice talkgroups (MZPD 1 dispatch, MZPD 2, TAC1-3, plus shared CCTT 1/2) flagged Enc on EBRCS with only the broadcast-only MZPD ANNC announcement talkgroup unflagged; the listed 'Channels 6 & 7' wording does not match RR talkgroup naming.
Encryption Details
Verified Talkgroup Data
Contra Costa County Context
Contra Costa County is a mixed picture: 3 of 9 agencies we track here are fully encrypted (33%), which means some neighboring departments are still audible on a scanner.
See every agency we track in Contra Costa County → County encryption overview →
What This Means
This agency encrypts all of its radio communications, including routine dispatch. The public, journalists, and even other first responders can't monitor its activity.
Frequently Asked Questions
Is Martinez Police radio encrypted?
Yes. Martinez Police uses P25 AES-256 encryption. This agency encrypts all of its radio communications, including routine dispatch. The public, journalists, and even other first responders can't monitor its activity.
Can I listen to Martinez Police on a police scanner?
No. Martinez Police has fully encrypted their radio communications using P25 AES-256. No consumer scanner can decode encrypted transmissions.
Why did Martinez Police encrypt their radio?
The standard justification nationwide is officer safety and operational security, regardless of whether a documented local incident ever required it. The tradeoff that follows is consistent too: public oversight drops, and reporters lose the ability to track police department response as it happens.
Can Contra Costa County reverse the encryption decision?
Yes — nothing about the underlying radio technology forces this. It's a decision Contra Costa County officials made and can revisit, and other communities have pushed departments back toward open channels through sustained council pressure and coalition-building.
What can I do about Martinez Police encryption?
File a FOIA request for Martinez Police's radio recordings and encryption-decision paperwork, then show up to speak at a council or commission meeting. Find other residents or journalists in Contra Costa County who want the same access — state legislation requiring public radio access is the longer-term fix, but organized local pressure is what usually moves the needle first.