800AB Meeting Minutes 2016-01

The minutes from the January 2016 meeting of the 800MHz Advisory Board are available for download. The meeting minutes and sign-in sheet were provided by the board secretary. For more information on the advisory board, click here.

Next Meeting: Thursday 3/24/2016, 1:30pm at 1810 Princeton Road – View the calendar.

The handouts from the meeting are included in this document, following the meeting minutes.

Download (PDF, 541KB)

 

Known Issue: Interference on Talkgroups

Interference is something that happens with radio systems, and it will never be a problem that can be checked off as completely solved. It’s more of a game of whack-a-mole – as repeat issues come up, they need to be tracked down to a source. We posted about this recently and had some success preventing the interference that plagued us in the summer and fall.

In the last two weeks, we’ve had several occurrences of what some might call “bleed over” that appears to be All-County Broadcasts (ACBs) originating from Cincinnati or other Hamilton County dispatch centers.

It is only happening in a “perfect storm” scenario, when they’re making an ACB and we have legitimate Butler County radio traffic with a talkgroup assigned to a particular channel. The ACB is hopping on the tail end of the legitimate Butler County transmission.

Here is an example audio file:

ACB Interference Example (WAV)

In short, BRICS staff and Motorola are working on finding the reason this is happening and a resolution. We just wanted to let you know that we’re aware of it.

If you have an occurrence, contact BRICS with a support ticket or email with the specific date, time and talkgroup affected.

800AB Meeting Minutes 2015-09

The minutes from the September 2015 meeting of the 800MHz Advisory Board are available for download. The meeting minutes and sign-in sheet were provided by the board secretary. For more information on the advisory board, click here.

Next Meeting: Thursday 1/28/2016, 1:30pm at 1810 Princeton Road – View the calendar.

The handouts from the meeting are included in this document, following the meeting minutes.

Download (PDF, 245KB)

 

800AB Meeting Minutes 2015-05

The minutes from the May 2015 meeting of the 800MHz Advisory Board are available for download. The meeting minutes and sign-in sheet were provided by the board secretary. For more information on the advisory board, click here.

Next Meeting: Thursday 9/24/2015, 1:30pm at 1810 Princeton Road – View the calendar.

The handouts from the meeting are included in this document, following the meeting minutes.

Download (PDF, 441KB)

 

Does your 9COM fire tone sound funny?

9COM Fire Departments: You may have noticed that fire tones on VHF have a new, brief addition at the beginning.

BRICS is testing the addition of a ~1 second verification tone at the beginning of each tone sequence generated by the 9COM dispatch center. This verification tone will give a “loop back” confirmation to the center that the dispatch successfully launched over the air.

The tones you’re used to begin immediately on 800MHz, and around a second later on VHF. If you’re listening to both simultaneously, you’ll hear them offset a bit. It all syncs back up when the voice announcement begins.