Local Repeater Map

GMRS - General Mobile Radio Service

Callsign: WRDX849

GMRS (General Mobile Radio Service) is a licensed radio service that provides reliable, short-to-medium range communication using UHF frequencies. It enables individuals and families to communicate directly, without relying on cellular networks or internet infrastructure.

Unlike consumer-grade radios, GMRS allows for higher power output, repeater usage, and extended range — making it a critical tool for both day-to-day communication and emergency situations.

Why GMRS Matters

In a world increasingly dependent on digital infrastructure, GMRS represents a resilient and independent communication solution. When traditional systems fail, radio communication remains one of the most dependable methods available.

Emergency Preparedness

GMRS plays a vital role in emergency preparedness. Whether during severe weather, power outages, or large-scale disruptions, having access to a functioning radio network ensures communication continuity. With repeaters and coordinated channels, communities can stay connected when it matters most.

Engineering + Practical Application

GMRS is not just about communication — it's about building systems. From repeater setups to network linking and integration with other technologies, it reflects an engineering mindset focused on reliability, redundancy, and continuous improvement.

Click here to show standard channels and frequencies

Standard GMRS channel reference for simplex and repeater pairs.

Channel	Simplex Frequency (MHz)	Repeater Output (MHz)	Repeater Input (MHz)
15	462.550	462.550	467.550
16	462.575	462.575	467.575
17	462.600	462.600	467.600
18	462.625	462.625	467.625
19	462.650	462.650	467.650
20	462.675	462.675	467.675
21	462.700	462.700	467.700
22	462.725	462.725	467.725
1	462.5625	-	-
2	462.5875	-	-
3	462.6125	-	-
4	462.6375	-	-
5	462.6625	-	-
6	462.6875	-	-
7	462.7125	-	-

Click here to see standard DCS tones with Midland translation

Midland channel privacy-code mapping for standard GMRS DCS values.

Midland	DCS
39	023
40	025
41	026
42	031
43	032
44	036
45	043
46	047
47	051
48	053
49	054
50	065
51	071
52	072
53	073
54	074
55	114
56	115
57	116
58	122
59	125
60	131
61	132
62	134
63	143
64	152
65	155
66	156
67	162
68	165
69	172
70	174
71	205
72	223
73	226
74	243
75	244
76	245
77	246
78	251
79	252
80	255
81	261
82	263
83	265
84	266
85	271
86	274
87	306
88	311
89	315
90	325
91	331
92	332
93	343
94	346
95	351
96	356
97	364
98	365
99	371
100	411
101	412
102	413
103	423
104	431
105	432
106	445
107	446
108	452
109	454
110	455
111	462
112	464
113	465
114	466
115	503
116	506
117	516
118	523
119	526
120	532
121	546
122	565
123	606
124	612
125	624
126	627
127	631
128	632
129	654
130	662
131	664
132	703
133	712
134	723
135	731
136	732
137	734
138	743
139	754

Click here to see standard CTCSS tones with Midland translation

Midland privacy-code mapping for standard GMRS CTCSS tones.

Midland	CTCSS
1	67.0
2	71.9
3	74.4
4	77.0
5	79.7
6	82.5
7	85.4
8	88.5
9	91.5
10	94.8
11	97.4
12	100.0
13	103.5
14	107.2
15	110.9
16	114.8
17	118.8
18	123.0
19	127.3
20	131.8
21	136.5
22	141.3
23	146.2
24	151.4
25	156.7
26	162.2
27	167.9
28	173.8
29	179.9
30	186.2
31	192.8
32	203.5
33	210.7
34	218.1
35	225.7
36	233.6
37	241.8
38	250.3

Repeater Search

Search by state and closest city. Results include repeater name, frequency set, tones, notes, and coordinates.

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Add repeater to local database

State City Repeater Name Output Frequency Input Frequency Tones Latitude Longitude Transmit Coverage (mi) Notes

Submit a repeater to save it locally and open an email draft with CSV-formatted data.

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State Closest City In State Repeater Name Contains

Select a state to begin.

Browser location will show repeater distance from you.

Repeater Name	Frequency Set (Out/In)	Tones	Notes	TX Coverage (mi)	Latitude	Longitude	Distance From Me (mi)

All Repeaters Map

This map plots every repeater with coordinates loaded from GMRS.csv. Hover any point to see output frequency, input frequency, and tones.

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Repeater Database

This table shows all repeaters currently stored in the page database. Local entries are saved in browser storage so the database grows over time.

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Source	State	City	Name	Output	Input	Tones	Notes	TX Coverage (mi)	Latitude	Longitude

Contact

At the bottom of every page you’ll find a contact section — please reach out with any questions, ideas, or suggestions.

If there’s something you think should be added, I’d like to hear it as this site continues to grow.

Midland	DCS
39	023
40	025
41	026
42	031
43	032
44	036
45	043
46	047
47	051
48	053
49	054
50	065
51	071
52	072
53	073
54	074
55	114
56	115
57	116
58	122
59	125
60	131
61	132
62	134
63	143
64	152
65	155
66	156
67	162
68	165
69	172
70	174
71	205
72	223
73	226
74	243
75	244
76	245
77	246
78	251
79	252
80	255
81	261
82	263
83	265
84	266
85	271
86	274
87	306
88	311
89	315
90	325
91	331
92	332
93	343
94	346
95	351
96	356
97	364
98	365
99	371
100	411
101	412
102	413
103	423
104	431
105	432
106	445
107	446
108	452
109	454
110	455
111	462
112	464
113	465
114	466
115	503
116	506
117	516
118	523
119	526
120	532
121	546
122	565
123	606
124	612
125	624
126	627
127	631
128	632
129	654
130	662
131	664
132	703
133	712
134	723
135	731
136	732
137	734
138	743
139	754

Midland	DCS
39	023
40	025
41	026
42	031
43	032
44	036
45	043
46	047
47	051
48	053
49	054
50	065
51	071
52	072
53	073
54	074
55	114
56	115
57	116
58	122
59	125
60	131
61	132
62	134
63	143
64	152
65	155
66	156
67	162
68	165
69	172
70	174
71	205
72	223
73	226
74	243
75	244
76	245
77	246
78	251
79	252
80	255
81	261
82	263
83	265
84	266
85	271
86	274
87	306
88	311
89	315
90	325
91	331
92	332
93	343
94	346
95	351
96	356
97	364
98	365
99	371
100	411
101	412
102	413
103	423
104	431
105	432
106	445
107	446
108	452
109	454
110	455
111	462
112	464
113	465
114	466
115	503
116	506
117	516
118	523
119	526
120	532
121	546
122	565
123	606
124	612
125	624
126	627
127	631
128	632
129	654
130	662
131	664
132	703
133	712
134	723
135	731
136	732
137	734
138	743
139	754

Midland	DCS
39	023
40	025
41	026
42	031
43	032
44	036
45	043
46	047
47	051
48	053
49	054
50	065
51	071
52	072
53	073
54	074
55	114
56	115
57	116
58	122
59	125
60	131
61	132
62	134
63	143
64	152
65	155
66	156
67	162
68	165
69	172
70	174
71	205
72	223
73	226
74	243
75	244
76	245
77	246
78	251
79	252
80	255
81	261
82	263
83	265
84	266
85	271
86	274
87	306
88	311
89	315
90	325
91	331
92	332
93	343
94	346
95	351
96	356
97	364
98	365
99	371
100	411
101	412
102	413
103	423
104	431
105	432
106	445
107	446
108	452
109	454
110	455
111	462
112	464
113	465
114	466
115	503
116	506
117	516
118	523
119	526
120	532
121	546
122	565
123	606
124	612
125	624
126	627
127	631
128	632
129	654
130	662
131	664
132	703
133	712
134	723
135	731
136	732
137	734
138	743
139	754