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Mid-Atlantic Digital Radio Network (Tier 3) Unconfirmed Talkgroups

From The RadioReference Wiki

The Following Talk Groups have been logged on the system, but do not have a 'confirmed' user. The table below shows the Talk Group, the site on which it was logged, a "best guess" user, and some notes to help others determine who the group belongs to.

Once a talk group can be confirmed, please submit a DB update, and remove the entry from the table below.

Talk Group Tx Site Possible User Additional Notes
200 4, 27, 28, 36, 39 Triangle Radio Techs RID 5256, 657160, 40xxxx Series Mostly ENC Alg=EP/RC4 KeyID=3 (Discovered 05/20/2026)
550 27, 36 Demo Radio Test RID 4000023, 4000091 Clear radio testing (Discovered 06/18/2026)
560 27 Demo Radio Test RID 4000091 (Discovered 06/18/2026)
5000 27, 36 Centre Radio Techs RID 5256, 6736, 657160, 657161, 657260 Mostly ENC (Discovered 06/09/2026)
21000 27, 36 Unk Business? RID 7025, 21342 ENC (Discovered 06/10/2026)
21001 27, 36 Unk Business? RID 7025, 7030, 21179, 213xx Series, 35442, 722248, 4000211 ENC (Discovered 05/27/2026)
21002 36 Unk Business? RID 4000218 ENC? (Discovered 06/19/2026)
21003 27, 40, 46, 48 Unk Business? RID 2522, 4000218 ENC (Discovered 06/15/2026)
21004 27, 36 Unk Business? RID 7025, 722248, 4000218 ENC (Discovered 06/09/2026)
21005 36 Unk Business? RID 4000218 ENC? (Discovered 06/19/2026)
21006 27, 36 Unk Business? RID 4000218 ENC? (Discovered 06/19/2026)
21007 36 Unk Business? RID 4000218 ENC? (Discovered 06/19/2026)
21008 36 Unk Business? RID 4000218 ENC? (Discovered 06/19/2026)
21009 36 Unk Business? RID 4000218 ENC? (Discovered 06/19/2026)
21010 36 Unk Business? RID 4000218 ENC? (Discovered 06/19/2026)
21011 36 Unk Business? RID 21171, 21196, 4000218+ ENC? (Discovered 06/19/2026)
21012 36 Unk Business? RID 4000218 ENC? (Discovered 06/19/2026)
21015 27, 36 Unk Business? RID 35442 ENC? (Discovered 06/02/2026)
21033 27 Unk Business? RID ? ENC? (Discovered 06/03/2026)
400001 27, 36 Triangle Radio Techs RID 400xxxx Series ENC (Discovered 06/02/2026)