Orange County Emergency Medical Services
Orange, California
How we verified this
As of August 2026 RadioReference lists Orange County's countywide EMS med-coordination and hospital talkgroups (MED-CALL, MED-CO1 through MED-CO3, hospital-to-field) as encrypted, while the Health Care Agency's EMS 1 and EMS 2 talkgroups are listed unencrypted.
Encryption Details
Orange County Context
Orange County Emergency Medical Services isn't an outlier here: 34 of the 35 public-safety agencies we track in Orange County are fully encrypted (97%), so most departments nearby have made the same move.
See every agency we track in Orange County → County encryption overview →
What This Means
This is a split system: certain talkgroups are encrypted while others remain in the clear, which means partial monitoring is still possible.
Frequently Asked Questions
Is Orange County Emergency Medical Services radio encrypted?
Yes — Orange County Emergency Medical Services's radio system runs on P25 AES-256 encryption. This is a split system: certain talkgroups are encrypted while others remain in the clear, which means partial monitoring is still possible.
Can I listen to Orange County Emergency Medical Services on a police scanner?
Partially. Orange County Emergency Medical Services encrypts some of its talkgroups while leaving others open, so some channels may still be accessible. Check RadioReference for specific talkgroup status.
Why did Orange County Emergency Medical Services encrypt their radio?
Departments typically point to officer safety and operational security. Neither claim tends to come with evidence specific to Orange County; what's verifiable is what's lost — journalists can't monitor emergency medical services activity in real time, and coordination with agencies that stay unencrypted gets harder.
Can Orange 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 Orange County Emergency Medical Services encryption?
Contact the officials who oversee Orange County Emergency Medical Services's budget directly and ask why full encryption was chosen over partial alternatives. Pair that with a FOIA request for recordings and policy records, and look for an existing coalition in Orange County, or start one, since agencies respond differently to organized, sustained pressure than to individual complaints.