07 October 2009

Chatham Emergency Management Agency Digital Talkgroups Revisited

This afternoon I'm revisiting a blog post from last month about CEMA talkgroups. Last month's post was about CEMA talkgroups being referred to as number/letter combinations such as 1A.

Today's monitoring has shed some more light on the designators for CEMA's talkgroups. As mentioned in the previous post, CEMA activity has been noted on TG 12496. It was in use today as CEMA and the Port Wentworth FD tested warning sirens. During that activity, the TG was referred to as "channel 1D." This would indicate that CEMA now has two groups of talkgroups for their use: a set of analog channels using A or ALPHA designators and a set of digital talkgroup using D or DELTA designators.

If TG 12496 is, as referred to, CEMA 1D and the D/DELTA talkgroups parallel the known analog talkgroups, we can extrapolate the following:

12496 - CEMA 1D
12512 - CEMA 2D
12528 - CEMA 3D
12544 - CEMA 4D
12560 - CEMA 5D

Future monitoring should indicate if those are the actual talkgroup assignments. I do have one note from December 2007 with radio testing on TG 12560. If anyone hears any activity on these talkgroups, please send me an email at kf4lmt @ comcast.net or post to the Scan Savannah Google Group.

Mac McCormick III, KF4LMT