Huntley Scanner - Scanning McHenry County Fire Districts
Est. April 2019
Fire Departments in McHenry County have transitioned from their Analog VHF systems to the Starcom21 Statewide Illinois network, which spans across Illinois and some parts of Iowa. The technology uses a more well known digital system called Project 25. By being on Project 25, specifically Starcom21 Statewide Illinois, our departments can travel to any location in the state and their radios will still work not only with local dispatch, but also other agencies.
This technology shares voice frequencies among multiple talk groups, rather than the previous method of having a dedicated frequency for each agency. In general, a single agency may have a handful of talk groups that are dedicated for them (see below). The voice frequncy is assigned by a control channel when a radio keys up. That control channel will then 'tell' the other radios on the talk group which frequency to tune to. All this happens in an instant. Each Starcom21 site has a set of voice / control frequencies. All of McHenry County makes up site 146 in the statewide system.
Analog scanners and many early digital scanners do not work on this system as it is very complex. A P25 Phase II Simulcast compatible scanner is required for this system. The downside is that these scanners are very expensive (The Uniden SDS100 is $650). However, there is an affordable solution! Our scanner is provided by several $30 RTL-SDRs which when paired with a computer, can "show" the computer the RF signals coming over the air. A free program on the computer called SDRTrunk then converts that digital signal from the control frequency, and can simultaneously monitor all active voice channels. This program then pushes each individual "call" to the Broadcastify Calls platform, as well as the respective Broadcastify Stream. The setup is relatively technical however the documentation on the SDRTrunk wiki is pretty helpful to get started!
The following frequencies are used for fireground operations statewide, and use analog frequencies incompatible with our Starcom21 feeds, therefore traffic on these frequencies will not be heard on our Broadcastify feeds.
IFERN is used by dispatch agencies to request mutural aid when an incident calls for it. Fireground Red is the primary channel for fireground operations, but other fireground channels may be used if needed. Fireground Green is often used for helicopter to ground operations in McHenry County.
Flash Flood Warning issued August 25 at 9:06PM CDT until August 26 at 3:00AM CDT by NWS Chicago IL
Affected Regions: DuPage, IL; Kane, IL; Kendall, IL; Will, IL
The National Weather Service in Chicago has issued a
* Flash Flood Warning for...
Southwestern DuPage County in northeastern Illinois...
Southern Kane County in northeastern Illinois...
Northeastern Kendall County in northeastern Illinois...
Northwestern Will County in northeastern Illinois...
* Until 300 AM CDT.
* At 906 PM CDT, doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between up to 2 inches of rain
have fallen. Additional rainfall amounts of 1 to 3 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
IMPACT...Rapid-onset flooding of small creeks and streams,
urban areas, highways, streets and underpasses, as
well as other poor drainage and low lying areas.
* Some locations that will experience flash flooding include...
Aurora, Joliet, Naperville, Bolingbrook, Romeoville, Plainfield,
St. Charles, Oswego, Batavia, Lockport, Geneva, Yorkville, Campton
Hills, Crest Hill, Montgomery, North Aurora, Sugar Grove, Boulder
Hill, Elburn and Fairmont.