3 of 8 Mchenry County agencies are fully encrypted
8 public safety agencies in Mchenry County, Illinois have encrypted their radio communications.
Radio encryption in Mchenry County
Most of what is tracked in McHenry County is partial rather than blanket encryption: five of eight agencies encrypt some channels and three encrypt all. The Algonquin-Lake in the Hills, Crystal Lake and Huntley fire protection districts and the McHenry County Sheriff are listed as encrypting tactical channels only, while McHenry Government and McHenry Fire/EMS encrypt everything. The North East Regional Communications Center is listed as fully encrypted and the Southeast Emergency Communications Center under an unidentified encryption type. Five of the eight records are unverified. Seventeen of 26 monitored talkgroups are still clear against nine encrypted, on STARCOM21 Statewide Illinois, Diga-Talk and the A-Beep Arlington Heights LTR system, which means routine dispatch is often still receivable even where tactical channels are not.
Compiled from this site's agency database. Encryption status changes without notice — confirm any specific agency on RadioReference.
Radio systems serving Mchenry County
- A-Beep - Arlington Heights LTR
- Diga-Talk
- STARCOM21 Statewide Illinois
Of 26 talkgroups catalogued for Mchenry County, 9 are encrypted and 17 remain in the clear. A scanner can still receive the unencrypted channels.
5 of 8 records here have been checked against a primary source; 3 have not.
System and talkgroup counts come from this site's agency database and change without notice — confirm current status on RadioReference.
Encryption Technology Used in Mchenry County
Encrypted Agencies in Mchenry County
| Agency Name | Type | Encryption | Scope |
|---|---|---|---|
| Algonquin-Lake in the Hills Fire Protection District ✓ | Fire | P25 AES-256 | Tactical Only |
| Crystal Lake Fire Protection District | Fire | P25 AES-256 | Tactical Only |
| Huntley Fire Protection District | Fire | P25 AES-256 | Tactical Only |
| McHenry County Sheriff | Sheriff | P25 AES-256 | Tactical Only |
| McHenry Government ✓ | Other | P25 AES-256 | Fully Encrypted |
| McHenry Fire/EMS ✓ | Fire | P25 AES-256 | Fully Encrypted |
| McHenry County - North East Regional Communications Center ✓ | Sheriff | P25 AES-256 | Fully Encrypted |
| McHenry County - Southeast Emergency Communications Center ✓ | Sheriff | Unknown | Tactical Only |
Related Case Studies
Learn more about police radio encryption issues in Illinois.
Frequently Asked Questions
Is Mchenry County police radio encrypted?
3 of 8 agencies in Mchenry County, Illinois are fully encrypted (38%), while 5 have partial encryption.
Can I listen to Mchenry County Sheriff on a scanner?
The Mchenry County Sheriff's Office has encrypted their radio communications using P25 AES-256. Scanner monitoring of sheriff operations is no longer possible.
How many police departments in Mchenry County are encrypted?
0 police departments in Mchenry County have implemented some level of encryption, along with 3 sheriff offices, 4 fire departments, and 0 EMS agencies.
What encryption technology does Mchenry County use?
The most common encryption type in Mchenry County is P25 AES-256, used by agencies for secure communications. This encryption blocks public scanner monitoring.
Fight Encryption in Mchenry County
Join the movement to restore transparency to public safety communications in Mchenry County, Illinois.