CB (Citizens Band) Radio — Resources — Engineered Preparedness

AM Mode. LSB also allowed on channels 16 and 36-40 (but both USB and LSB are used in practice). Groundwave max of about 30 miles. Much further via skywave (similar to 10m / 11m / 12m). No license needed. Max of 4W AM or 12W LSB.

Note: All frequencies listed are in MegaHertz (MHz)

Channel	Frequency	Note
1	26.965
2	26.975
3	26.985
4	27.005	Preppers
5	27.015	Off Road
6	27.025
7	27.035
8	27.055
9	27.065	Emergency
10	27.075	Regional Truckers
11	27.085	Local Calling
12	27.105
13	27.115	Marine/RV
14	27.125	Handheld
15	27.135
16	27.155	Off Road
17	27.165	N/S Truckers
18	27.175
19	27.185	E/W Truckers
20	27.205

Channel	Frequency	Note
21	27.215
22	27.225
23	27.255
24	27.235
25	27.245
26	27.265
27	27.275
28	27.285
29	27.295
30	27.305
31	27.315
32	27.325
33	27.335
34	27.345
35	27.355
36	27.365
37	27.375	Prepper USB
38	27.385	LSB Calling
39	27.395
40	27.405

In addition to the normal, legal channels, many illegally use the gaps between channels as well as other parts of the spectrum to transmit on. All are SSB (LSB & USB).

The “gaps” are extra channels between the normal CB channels. This example is around CH36, but the same scheme exists around all the original 40 channels. Note: With only 2kHz spacing, they will interfere with one another… I must note that doing this is illegal.

Frequency	Mode	Notes
27.355		CH35
27.358	USB	35 High Gap
27.360	Both	35/36 Gap
27.362	LSB	36 Drop Gap
27.365		CH36
27.368	USB	36 High Gap
27.370	Both	36/37 Gap
27.372	LSB	37 Drop Gap
27.375		CH37

The “uppers” are extra channels used above the normal CH40. USB & LSB common on all frequencies shown. And again, doing this is illegal…

Channel	Frequency	Usage
41.0	27.410
41	27.415
42.0	27.420	Preppers
42	27.425
43.0	27.430
43	27.435
44.0	27.440
44	27.445
45.0	27.450
45	27.455
46.0	27.460
46	27.465
47.0	27.470
47	27.475
48.0	27.480
48	27.485
49.0	27.490
49	27.495
50.0	27.500
50	27.505

Channel	Frequency	Usage
51.0	27.510
51	27.515
52.0	27.520
52	27.525
53.0	27.530
53	27.535
54.0	27.540
54	27.545
55.0	27.550
55	27.555	Calling
56.0	27.560
56	27.565
57.0	27.570
57	27.575	Don’t Use
58.0	27.580	Don’t Use
58	27.585	Don’t Use
59.0	27.590	Don’t Use
59	27.595
60.0	27.600
60	27.605	Don’t Use