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- RR Glossary (382 members)
- Radio Models (290 members)
- Minnesota Fire Services (270 members)
- California Fire Services (267 members)
- New York Station IDs (250 members)
- Illinois Businesses (248 members)
- Minnesota Station IDs (230 members)
- California Station IDs (219 members)
- Illinois Business Frequencies (203 members)
- New York Fire Services (201 members)
- Scanners Glossary (201 members)
- Missouri Businesses (185 members)
- Signal Analysis and Decoding Glossary (178 members)
- Missouri Business Frequencies (163 members)
- Receivers Glossary (163 members)
- Illinois (153 members)
- Missouri (152 members)
- New York (151 members)
- Military Glossary (147 members)
- Texas (139 members)
- Minnesota Medical (137 members)
- Trunktracking Glossary (136 members)
- Uniden Scanners (135 members)
- Texas Trunked Radio Systems (131 members)
- Ontario MOTOTRBO Information (131 members)
- Illinois Station IDs (131 members)
- Illinois Trunked Radio Systems (128 members)
- Illinois Law Enforcement (127 members)
- North Carolina (125 members)
- New York Medical (125 members)
- New York Businesses (124 members)
- Ohio (122 members)
- Pennsylvania Station IDs (122 members)
- Virginia (121 members)
- Minnesota (121 members)
- Categories Tree (121 members)
- Illinois Medical (120 members)
- New York Law Enforcement (118 members)
- Pennsylvania (115 members)
- Texas Businesses (113 members)
- St Louis Metro Area (112 members)
- Michigan (110 members)
- Handheld Scanners (109 members)
- Mississippi (109 members)
- Indiana (108 members)
- Illinois Fire Services (108 members)
- US Federal Government (107 members)
- Michigan Businesses (107 members)
- Virginia Fire Services (107 members)
- Radio Shack Scanners (106 members)
- Minnesota Trunking Information (105 members)
- Florida Trunked Radio Systems (104 members)
- Texas Law Enforcement (104 members)
- Florida (103 members)
- Professional Radios Glossary (101 members)
- Pennsylvania Fire Services (100 members)
- North Carolina Fire Services (100 members)
- Virginia Trunking Information (99 members)
- Pennsylvania Medical (99 members)
- Chicago Metro Area (98 members)
- North Carolina Station IDs (98 members)
- Ontario Trunked Radio Systems (97 members)
- Aviation Glossary (97 members)
- Ohio Fire Services (96 members)
- Minnesota Law Enforcement (96 members)
- Illinois Utilities (95 members)
- Wisconsin (94 members)
- Illinois RID/UIDs (94 members)
- Ohio Station IDs (94 members)
- Colorado (91 members)
- US Federal Government Frequencies (90 members)
- Ohio Medical (89 members)
- Florida Businesses (88 members)
- Kentucky (87 members)
- Alberta (87 members)
- Missouri RID/UIDs (87 members)
- Virginia Station IDs (87 members)
- Pennsylvania Law Enforcement (87 members)
- Florida Fire Services (87 members)
- Ontario Trunking Information (85 members)
- United States (85 members)
- Desktop Scanners (84 members)
- Wisconsin Fire Services (84 members)
- Iowa (83 members)
- Analog Trunktrackers (82 members)
- Illinois Law Enforcement Frequencies (82 members)
- Arkansas (81 members)
- Georgia (81 members)
- Wisconsin Law Enforcement (81 members)
- Digital Scanners without NXDN (81 members)
- Texas Fire Services (80 members)
- Ohio Law Enforcement (80 members)
- California Trunking Information (79 members)
- Texas Station IDs (79 members)
- New York Business Frequencies (78 members)
- California (77 members)
- Virginia Medical (77 members)
- Illinois Utilities Frequencies (77 members)
- Digital Scanners without ProVoice (77 members)
- Texas Medical (76 members)
- Florida Station IDs (75 members)
- Illinois Trunking Information (74 members)
- Virginia Trunked Radio Systems (74 members)
- Ontario Unknown Talkgroups (74 members)
- Illinois Fire Services Frequencies (74 members)
- HF Glossary (74 members)
- Database Glossary (74 members)
- United States Frequencies (74 members)
- California Frequencies (73 members)
- Illinois Medical Frequencies (73 members)
- Ontario (72 members)
- Michigan Business Frequencies (72 members)
- Illinois Education (72 members)
- Wisconsin Medical (72 members)
- Michigan Station IDs (72 members)
- Connecticut (71 members)
- Ontario Frequencies (71 members)
- Michigan Fire Services (71 members)
- Digital Scanners without DMR (71 members)
- Digital Scanners without MOTOTRBO (71 members)
- Ohio Businesses (70 members)
- Tennessee (69 members)
- Wisconsin Station IDs (68 members)
- Michigan Law Enforcement (68 members)
- Kansas (67 members)
- Rebanding Supported Scanners (67 members)
- New York Trunking Information (67 members)
- California Trunked Radio Systems (67 members)
- Michigan Medical (67 members)
- Indiana Fire Services (67 members)
- HF Waterfalls (67 members)
- Amateur Radio Glossary (67 members)
- New York Trunked Radio Systems (66 members)
- New York Fast Food Frequencies (66 members)
- Missouri Law Enforcement (66 members)
- Missouri Utilities (65 members)
- United States Law Enforcement (65 members)
- West Virginia (64 members)
- New York Brevity Codes (64 members)
- United States Air Force (63 members)
- Washington (63 members)
- Texas Frequencies (63 members)
- Michigan Frequencies (63 members)
- Indiana RID/UIDs (63 members)
- Iowa Trunked Radio Systems (63 members)
- Florida Medical (63 members)
- New York Frequencies (62 members)
- Ohio RID/UIDs (62 members)
- Missouri Medical (62 members)
- Missouri Fire Services (62 members)
- United States Military (62 members)
- Alberta Counties (61 members)
- Ohio Trunked Radio Systems (61 members)
- Michigan MOTOTRBO Information (61 members)
- Software Glossary (61 members)
- Colorado DTRS Site Information (60 members)
- South Carolina (60 members)
- Pennsylvania Trunked Radio Systems (60 members)
- Virginia Businesses (60 members)
- Illinois Recreation or Attractions (60 members)
- Illinois Ground Transportation (60 members)
- United States Military Frequencies (60 members)
- Mobile Scanners (59 members)
- Missouri Utilities Frequencies (59 members)
- Colorado Station IDs (59 members)
- United States Aviation (59 members)
- United States Aviation Frequencies (59 members)
- United States Trunking Information (59 members)
- Louisiana (58 members)
- US Defense (58 members)
- Ohio Fire Tone Outs (58 members)
- Indiana Station IDs (58 members)
- United States Trunked Radio Systems (58 members)
- Oklahoma (57 members)
- Alabama (57 members)
- New York Fire Tone Outs (57 members)
- Michigan Trunked Radio Systems (57 members)
- Illinois Education Frequencies (57 members)
- California MOTOTRBO Information (57 members)
- Alberta Trunked Radio Systems (57 members)
- United States Civil Aviation (57 members)
- United States Businesses (57 members)
- United States Business Frequencies (57 members)
- United States Recreation or Attractions (57 members)
- Utah (56 members)
- Texas Civil Aviation (56 members)
- California Businesses (56 members)
- US Defense Frequencies (56 members)
- United States Civil Aviation Frequencies (56 members)
- United States Military Aviation (56 members)
- United States Law Enforcement Frequencies (56 members)
- United States Ground Transportation (56 members)
- United States Weather (56 members)
- United States Recreation or Attractions Frequencies (56 members)
- Digital Scanners with DMR (56 members)
- Digital Scanners with MOTOTRBO (56 members)
- United States Navy (55 members)
- Texas Business Frequencies (55 members)
- Florida Unknown Talkgroups (55 members)
- Indiana Law Enforcement (55 members)
- Colorado Fire Services (55 members)
- United States Medical Frequencies (55 members)
- United States Ground Transportation Frequencies (55 members)
- United States Sports Events and Organizations (55 members)
- Uniden Scanner Features (55 members)
- New Jersey (54 members)
- United States Air Force Frequencies (54 members)
- Minnesota RID/UIDs (54 members)
- Illinois Recreation or Attractions Frequencies (54 members)
- Texas Unknown Talkgroups (54 members)
- United States Military Aviation Frequencies (54 members)
- United States Fire Services (54 members)
- United States Medical (54 members)
- United States Station IDs (54 members)
- United States Railroads (54 members)
- United States Railroads Frequencies (54 members)
- United States Utilities (54 members)
- United States NXDN (54 members)
- Conventional Scanners (53 members)
- Texas Trunking Information (53 members)
- United States Major Events and Disasters (53 members)
- United States Media Frequencies (53 members)
- United States Media (53 members)
- United States Weather Frequencies (53 members)
- United States MOTOTRBO Information (53 members)
- United States NXDN NEXEDGE (53 members)
- United States Utilities Frequencies (53 members)
- United States DMR (53 members)
- AFRRCS Sites (52 members)
- United States Army (52 members)
- Air National Guard (52 members)
- Missouri Education (52 members)
- Illinois Sports Events and Organizations (52 members)
- Colorado Law Enforcement (52 members)
- Documentation (52 members)
- United States Brevity Codes (52 members)
- United States Major Events and Disasters Frequencies (52 members)
- United States Sports Events and Organizations Frequencies (52 members)
- AOR Receivers (51 members)
- Statewide Public Safety Systems (51 members)
- New York MOTOTRBO Information (51 members)
- Virginia Travel Scanning (51 members)
- Virginia Law Enforcement (51 members)
- Missouri Station IDs (51 members)
- Arizona Fire Services (51 members)
- HF Receivers (51 members)
- Programming FAQs and Tips for Radio Shack Scanners (51 members)
- Scanners FAQ (51 members)
- Maryland (50 members)
- Ohio Medical Frequencies (50 members)
- North Carolina Medical (50 members)
- Illinois Ground Transportation Frequencies (50 members)
- Ontario Medical (50 members)
- Ohio Fire Services Frequencies (50 members)
- United States Fast Food Frequencies (50 members)
- United States Fire Tone Outs (50 members)
- Missouri Trunked Radio Systems (49 members)
- Pennsylvania Businesses (49 members)
- Iowa Medical (49 members)
- United States Fire Services Frequencies (49 members)
- California Law Enforcement (48 members)
- Programming FAQs and Tips for Uniden Scanners (48 members)
- United States Motor Freight (48 members)
- Maryland Trunked Radio Systems (47 members)
- Michigan Trunking Information (47 members)
- Pennsylvania Trunking Information (47 members)
- Missouri Recreation or Attractions (47 members)
- Virginia MOTOTRBO Information (47 members)
- Indiana Medical (47 members)
- Ontario Station IDs (47 members)
- United States Motor Freight Frequencies (47 members)
- United States RID/UIDs (47 members)
- United States Unknown Talkgroups (47 members)
- FreeSCAN (46 members)
- Oregon (46 members)
- US Forest Service (46 members)
- Air National Guard Frequencies (46 members)
- Indiana Fire Tone Outs (46 members)
- Iowa Businesses (46 members)
- Kentucky Law Enforcement (46 members)
- United States Navy Frequencies (45 members)
- Indiana Businesses (45 members)
- Michigan Education (45 members)
- Minnesota Businesses (45 members)
- Ontario Law Enforcement (45 members)
- DMA Radios Hints and Kinks (44 members)
- Oklahoma Businesses (44 members)
- Ontario Businesses (44 members)
- Illinois Unknown Talkgroups (44 members)
- Florida Law Enforcement (44 members)
- Nebraska (43 members)
- New Jersey Trunked Radio Systems (43 members)
- Tennessee Businesses (43 members)
- Illinois Sports Events and Organizations Frequencies (43 members)
- Nevada Businesses (43 members)
- New Jersey Fire Services (43 members)
- New Jersey Station IDs (43 members)
- Iowa Fire Services (43 members)
- Georgia Fire Services (43 members)
- Arizona Station IDs (43 members)
- United States Communications Providers (43 members)
- Massachusetts (42 members)
- Wiki Frequencies (42 members)
- Illinois Frequencies (42 members)
- Wisconsin Businesses (42 members)
- Icom Receivers (42 members)
- New Mexico (41 members)
- Florida Frequencies (41 members)
- US Federal Prisons Frequencies (41 members)
- Missouri Trunking Information (41 members)
- Alberta Trunking Information (41 members)
- Louisiana Businesses (41 members)
- Missouri Education Frequencies (41 members)
- US Federal Government in Texas (41 members)
- New Jersey Medical (41 members)
- Illinois Communications Providers (41 members)
- West Virginia Fire Services (41 members)
- Desktop Receivers (40 members)
- US Federal Prisons (40 members)
- Virginia Frequencies (40 members)
- United States Army Frequencies (40 members)
- North Carolina Businesses (40 members)
- Missouri Recreation or Attractions Frequencies (40 members)
- Alberta Frequencies (40 members)
- Utah Recreation or Attractions (40 members)
- Maryland Fire Services (40 members)
- Handheld Receivers (39 members)
- Canada (39 members)
- New Jersey RID/UIDs (39 members)
- Maryland Trunking Information (39 members)
- New Jersey Trunking Information (39 members)
- Michigan Utilities (39 members)
- Michigan Recreation or Attractions (39 members)
- Ohio Business Frequencies (39 members)
- California Recreation or Attractions (39 members)
- New York Communications Providers Frequencies (39 members)
- Florida MOTOTRBO Information (39 members)
- Handheld Professional Radios (39 members)
- Arizona (38 members)
- Florida Trunking Information (38 members)
- West Virginia Businesses (38 members)
- New Jersey Businesses (38 members)
- Ontario Business Frequencies (38 members)
- District of Columbia Businesses (38 members)
- United States Amateur Radio (38 members)
- United States Amateur Radio Frequencies (38 members)
- United States Deprecated Trunked Systems (38 members)
- Object Oriented Scanners (37 members)
- South Dakota (37 members)
- Army National Guard (37 members)
- New Jersey Frequencies (37 members)
- US Forest Service Frequencies (37 members)
- Ohio Trunking Information (37 members)
- Arkansas Businesses (37 members)
- Colorado Medical (37 members)
- Michigan Education Frequencies (37 members)
- Missouri Medical Frequencies (37 members)
- Texas Sports Events and Organizations (37 members)
- Maryland Businesses (37 members)
- Ohio MOTOTRBO Information (37 members)
- Utah Recreation or Attractions Frequencies (37 members)
- Tennessee Law Enforcement (37 members)
- Tennessee Fire Services (37 members)
- Ohio Brevity Codes (37 members)
- Kentucky Fire Services (37 members)
- Florida Brevity Codes (37 members)
- West Virginia CSX Transportation (37 members)
- Disambiguation (36 members)
- Maine (36 members)
- Montana (36 members)
- Virginia RID/UIDs (36 members)
- Florida CSX Transportation (36 members)
- Minnesota Trunked Radio Systems (36 members)
- Wisconsin Trunked Radio Systems (36 members)
- Kentucky Businesses (36 members)
- Michigan Recreation or Attractions Frequencies (36 members)
- US Federal Government Frequencies in Texas (36 members)
- West Virginia Station IDs (36 members)
- Missouri Law Enforcement Frequencies (36 members)
- Washington Amateur Radio Repeaters (36 members)
- United States Medical Aviation (36 members)
- Arkansas RID/UIDs (36 members)
- Hawaii (35 members)
- New Hampshire (35 members)
- Nova Scotia (35 members)
- California Medical (35 members)
- Alabama Businesses (35 members)
- Mississippi Businesses (35 members)
- California Business Frequencies (35 members)
- Virginia Unknown Talkgroups (35 members)
- Illinois MOTOTRBO Information (35 members)
- Missouri Ground Transportation (35 members)
- South Carolina Businesses (35 members)
- Georgia Law Enforcement (35 members)
- Texas Special Events (35 members)
- United States Amateur Radio Repeaters (35 members)
- United States Marine or Maritime (35 members)
- Digital Scanners with ProVoice (35 members)
- West Virginia CSX Transportation Frequencies (35 members)
- United States Coast Guard (34 members)
- Idaho (34 members)
- Army National Guard Frequencies (34 members)
- Florida CSX Transportation Frequencies (34 members)
- Indiana Trunked Radio Systems (34 members)
- Connecticut Trunked Radio Systems (34 members)
- Georgia Trunked Radio Systems (34 members)
- Colorado Businesses (34 members)
- Georgia Businesses (34 members)
- Kentucky Medical (34 members)
- North Carolina Law Enforcement (34 members)
- Maryland Station IDs (34 members)
- Iowa Law Enforcement (34 members)
- Special Topics (34 members)
- GRE Scanners (34 members)
- Database FAQ (34 members)
- US Common Frequencies (34 members)
- United States Marine or Maritime Frequencies (34 members)
- New York Medical Frequencies (33 members)
- Texas Recreation or Attractions (33 members)
- Michigan Utilities Frequencies (33 members)
- Ohio Unknown Talkgroups (33 members)
- New York Fire Services Frequencies (33 members)
- Iowa Station IDs (33 members)
- US National Parks (32 members)
- Pennsylvania Frequencies (32 members)
- Florida Fire Tone Outs (32 members)
- Texas Utilities (32 members)
- Pennsylvania Business Frequencies (32 members)
- Michigan Unknown Talkgroups (32 members)
- Pennsylvania MOTOTRBO Information (32 members)
- Georgia Medical (32 members)
- Arizona Businesses (32 members)
- Ontario Fire Services (32 members)
- Oklahoma Law Enforcement (32 members)
- Maryland Law Enforcement (32 members)
- Ontario Common Carriers Frequencies (32 members)
- Motorola Professional Radios (32 members)
- Live Audio FAQ (32 members)
- Kentucky CSX Transportation (32 members)
- Nevada (31 members)
- Alaska (31 members)
- Iowa Frequencies (31 members)
- Texas RID/UIDs (31 members)
- Georgia CSX Transportation (31 members)
- New Mexico Businesses (31 members)
- Massachusetts Businesses (31 members)
- Connecticut Businesses (31 members)
- Michigan Sports Events and Organizations (31 members)
- Iowa Business Frequencies (31 members)
- Michigan Medical Frequencies (31 members)
- Hawaii Businesses (31 members)
- Illinois Civil Aviation (31 members)
- New Jersey MOTOTRBO Information (31 members)
- Washington Businesses (31 members)
- Texas Deprecated Trunked Systems (31 members)
- Georgia Station IDs (31 members)
- Canada Frequencies (31 members)
- Kentucky CSX Transportation Frequencies (31 members)
- North Dakota (30 members)
- Texas Fire Tone Outs (30 members)
- Nebraska Businesses (30 members)
- Wyoming Businesses (30 members)
- Utah Businesses (30 members)
- Delaware Businesses (30 members)
- Pennsylvania Unknown Talkgroups (30 members)
- Virginia Civil Aviation (30 members)
- West Virginia Medical (30 members)
- Kansas Businesses (30 members)
- Texas Communications Providers (30 members)
- Utah Station IDs (30 members)
- HF Signal Analysis and Decoding (30 members)
- United States Education (30 members)
- Delaware (29 members)
- Vermont (29 members)
- Ohio Frequencies (29 members)
- US National Parks Frequencies (29 members)
- Ontario RID/UIDs (29 members)
- Georgia CSX Transportation Frequencies (29 members)
- New York CSX Transportation (29 members)
- Washington Trunked Radio Systems (29 members)
- Tennessee Trunked Radio Systems (29 members)
- North Dakota Businesses (29 members)
- Idaho Businesses (29 members)
- Indiana Business Frequencies (29 members)
- New York Unknown Talkgroups (29 members)
- New York Civil Aviation (29 members)
- Oregon Businesses (29 members)
- New Jersey Law Enforcement (29 members)
- New York Amateur Radio Repeaters (29 members)
- Oregon Frequencies (28 members)
- United States Coast Guard Frequencies (28 members)
- Kentucky Trunked Radio Systems (28 members)
- South Carolina Trunked Radio Systems (28 members)
- Alaska Businesses (28 members)
- Florida Recreation or Attractions (28 members)
- Illinois Fast Food Frequencies (28 members)
- Missouri Ground Transportation Frequencies (28 members)
- New Jersey Business Frequencies (28 members)
- California Recreation or Attractions Frequencies (28 members)
- Montana Businesses (28 members)