STARCOM21 Mystery Talkgroups
I was reviewing some SC21 recordings from June and came across activity on two talkgroups (3406 and 3408) not listed on the Radio Reference SC21 database page or in the list of 'mystery talkgroups' list on the RR SC21 wiki page.
RID 77069 came up on TG3406. He IDs himself as "3602" and the TG as "PSAP". A few minutes later, he comes up on TG3408 and works RID 77066 ("3601"). "3602" says he's in Indiana on I-94 east of I-65.
Is anyone familiar with either of these talkgroups or possibly an agency using 3600-series identifiers? The RR SC21 wiki page RID list indicates that 77xxx RIDs are used in Grundy County.
At one point "3602" mentions that he had earlier been on I-65 directly in line with (Illinois route?) "17". FWIW, Illinois Route 17 runs east/west just south of Grundy County.
Thanks in advance....