OpenMHz was back in service after an outage at 8:17 p.m. on Friday, December 23, 2022. Archived records before 8:17 p.m. remained logged, but were not re-connected to any audio. The outage may have been caused by an SSL issue with a third-party service, but this was not confirmed.
Saturday, December 24, 2022
Sunday, December 18, 2022
OpenMhz Malfunction: No Audio, Website Skips Rapidly Through Audio Message Entries
SUN DEC 18 2022 -- OpenMhz.com, beginning around Friday, December 16, 2022 has had a technical problem that skips through each audio segment and plays no audio. The website is logging audio entries, but not playing audio. The malfunction is a reproducible error on Google Chrome, Safari, and iOS.
The error might be caused by an SSL issue affecting a third-party host that servers audio files.
Sunday, August 7, 2022
Chicago Fire Department OEMC 800 MHz Available on OpenMHz
Sunday morning August 7, 2022 the CFD Talkgroups for Chicago Fire Department OEMC (800 MHz) were noticed on OpenMHz. The start date for the 800 MHz monitoring on OpenMHz was not initially known.
openmhz.com/system/chi_oemc (800 MHz)***
***NOTE: CFD has had trouble with the 400 MHz system, and has frequently switch to the 800 MHz system.
Tuesday, June 21, 2022
Chicago Fire Department Temporarily and Intermittently Changes Radio Calls to 800 MHz Talkgroups Possibly Due to Atmospheric Conditions Affecting UHF 400 MHz Frequencies
During mid-June 2022, Chicago Fire Department radio calls were switched to the 800 MHz talkgroups that are also available to Chicago Fire Department operations. The reason for the switch was possibly due to atmospheric conditions that were causing interference on the UHF 400 MHz frequencies.
Degradation to reception was also observed on public safety scanning radios in Arlington Heights with increased difficulty understanding radio messages.
Eric Tendian added the 800 MHz talkgroups to his live feeds available on his YouTube channel ...
https://www.youtube.com/c/EricTendian
On Tuesday, June 21, 2022, Chicago Fire Department was observed operating on the UHF frequencies.
See also ...
Sunday, January 2, 2022
Unwanted Interference on Lake County OpenMHz Removed Late 2021 or Early 2022
An encrypted frequency or talk group or other interference was removed from the Lake County OpenMHz section ...
Saturday, September 25, 2021
Champaign County Added to ChicagoFireScanner.com
Monday, December 31, 2018
New Chicago Fire Department Radio Site Appears on OpenMHz
Fire (Main and North)
EMS (Main and North)
CFD North
CFD South
Talkgroup filters provide about the same functionality compared to Group Names, except allow the separation of EMS Main (North) and EMS Englewood (South).
The source and location of the radio monitoring facility was initially anonymous.
The url for the Chicago Fire Department radio site is ...
openmhz.com/system/chi_cfd
OpenMHz utilizes a Software Defined Radio (SDR) that is combined with a computer, and allows the recording of multiple talkgroups simultaneously, and then archives each radio message -- logging the date, times and duration of the messages. OpenMHz audio can be monitored live or can be monitored historically by listening to a specific message or playback a historical period. OpenMHz initially provides a 5-day archive of talkgroup messages.
Public safety communications is among the most valuable information that a municipality acquires. Real time and playback access is vital for safety of citizens' protection from danger, such as shootings, hazardous materials, property damage, and other life or death situations.