Illinois Department of Corrections
Statewide, Illinois
How we verified this
As of August 2026 RadioReference flags a substantial minority of Illinois Department of Corrections STARCOM21 talkgroups — including several parole, facility and training-academy channels — as encrypted, while many other IDOC and parole talkgroups remain in the clear; the encryption algorithm is not stated by the source.
Encryption Details
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 Illinois Department of Corrections radio encrypted?
Yes — Illinois Department of Corrections's radio system runs on P25 ADP 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 Illinois Department of Corrections on a police scanner?
Partially. Illinois Department of Corrections encrypts some of its talkgroups while leaving others open, so some channels may still be accessible. Check RadioReference for specific talkgroup status.
Why did Illinois Department of Corrections encrypt their radio?
Departments typically point to officer safety and operational security. Neither claim tends to come with evidence specific to Statewide County; what's verifiable is what's lost — journalists can't monitor corrections facility activity in real time, and coordination with agencies that stay unencrypted gets harder.
Can Statewide County reverse the encryption decision?
Yes. Whoever made this call for Illinois Department of Corrections can also unmake it; there's no technical lock-in. The approach that has worked elsewhere combines public-records requests, direct council pressure, and a coordinated local coalition.
What can I do about Illinois Department of Corrections encryption?
Ask for the paperwork first — the policy that authorised encryption for Illinois Department of Corrections, and the recordings themselves — because a specific request is harder to wave away than a general complaint. Then take what you learn to a council meeting, and bring others from Statewide County with you.