CB

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High-HF (generally 26-28 MHz) short-range radio service designed for personal or business use by the general public. Generally license free worldwide, although frequency allocations, modes and power limits vary from country to country. However, these limits are often ignored and enforcement is extremely lax.

Many countries follow the US 40-channel plan, with most of Europe allowing for use of FM on these frequencies in addition to AM. SSB is legal in some parts of the world, in others only AM/FM or even just FM are allowed. The US CB frequency plan has been standardized Europe-wise as the "CEPT" band (or "mid band") in FM mode. Some countries (Germany, Czech Republic, Russia, the UK, New Zealand, etc) have additional channels authorized in addition to the standard 26.965-27.405 MHz US FCC/CEPT "mid band" allocation. Other countries (for example, South Africa, Japan) have entirely different allocations and/or use only a portion of the US FCC/CEPT mid band channel plan. See charts below for CB channel plans.


Team MX-10, a typical multi-norm European AM/FM CB radio
Galaxy DX 959, a typical AM/SSB "American style" CB radio


When propagation conditions are favorable, CB becomes anything but a "short-range" or "local" service. Long distance communication is possible with modest power levels when propagation conditions are good.

The so-called "A channels" are also heavily used, especially when a band opening makes finding a clear frequency difficult. The A channels are assigned to R/C and telemetry purposes in most countries (the USA included). These six frequencies fall under a different section of Part 95 of the FCC rules. 27.255 MHz (CB Channel 23) is also one of the R/C channels, but it is shared with CB. FCC rules permit a maximum of 4 watts carrier power on 26.995 MHz, 27.045 MHz, 27.095 MHz, 27.145 MHz and 27.195 MHz. FCC rules permit a maximum of 25 watts carrier power on 27.255 MHz (this translates to 100 watts PEP at 100% AM modulation). Due to the higher power allowed on 27.255 MHz, it is often used for on-site paging and telemetry systems.

Contents

"A" or "RC" channels

CB Channel RC Channel RC Color Code Frequency
Channel "3A" Channel 1 Brown 26.995 MHz
Channel "7A" Channel 2 Red 27.045 MHz
Channel "11A" Channel 3 Orange 27.095 MHz
Channel "15A" Channel 4 Yellow 27.145 MHz
Channel "19A" Channel 5 Green 27.195 MHz
Channel 23 Channel 6 Blue 27.255 MHz


US "FCC" "CEPT" or "mid band" CB Frequencies

AM and SSB Modulation in the Americas, Australia, Asia, FM allowed in Europe and elsewhere

CB Channel Frequency
Channel 1 26.965 MHz
Channel 2 26.975 MHz
Channel 3 26.985 MHz
Channel 4 27.005 MHz
Channel 5 27.015 MHz
Channel 6 27.025 MHz
Channel 7 27.035 MHz
Channel 8 27.055 MHz
Channel 9 27.065 MHz
Channel 10 27.075 MHz
Channel 11 27.085 MHz
Channel 12 27.105 MHz
Channel 13 27.115 MHz
Channel 14 27.125 MHz
Channel 15 27.135 MHz
Channel 16 27.155 MHz
Channel 17 27.165 MHz
Channel 18 27.175 MHz
Channel 19 27.185 MHz
Channel 20 27.205 MHz
Channel 21 27.215 MHz
Channel 22 27.225 MHz
Channel 23 27.255 MHz
Channel 24 27.235 MHz
Channel 25 27.245 MHz
Channel 26 27.265 MHz
Channel 27 27.275 MHz
Channel 28 27.285 MHz
Channel 29 27.295 MHz
Channel 30 27.305 MHz
Channel 31 27.315 MHz
Channel 32 27.325 MHz
Channel 33 27.335 MHz
Channel 34 27.345 MHz
Channel 35 27.355 MHz
Channel 36 27.365 MHz
Channel 37 27.375 MHz
Channel 38 27.385 MHz
Channel 39 27.395 MHz
Channel 40 27.405 MHz


UK CB "27/81" Frequencies

FM (Frequency Modulation)

The UK allows use of the CEPT "mid band" allocation (same as US frequencies) in addition to the frequencies listed below. AM, FM and SSB are allowed on 26.965-27.405 MHz. FM is the only mode allowed on 27.60125-27.99125 MHz. In the UK, these frequencies are shared with the Community Audio Distribution Service (CADS) and the Republic of Ireland's similar service the Wireless Public Address System (WPAS).

CB Channel Frequency
Channel 1 27.60125 MHz
Channel 2 27.61125 MHz
Channel 3 27.62125 MHz
Channel 4 27.63125 MHz
Channel 5 27.64125 MHz
Channel 6 27.65125 MHz
Channel 7 27.66125 MHz
Channel 8 27.67125 MHz
Channel 9 27.68125 MHz
Channel 10 27.69125 MHz
Channel 11 27.70125 MHz
Channel 12 27.71125 MHz
Channel 13 27.72125 MHz
Channel 14 27.73125 MHz
Channel 15 27.74125 MHz
Channel 16 27.75125 MHz
Channel 17 27.76125 MHz
Channel 18 27.77125 MHz
Channel 19 27.78125 MHz
Channel 20 27.79125 MHz
Channel 21 27.80125 MHz
Channel 22 27.81125 MHz
Channel 23 27.82125 MHz
Channel 24 27.83125 MHz
Channel 25 27.84125 MHz
Channel 26 27.85125 MHz
Channel 27 27.86125 MHz
Channel 28 27.87125 MHz
Channel 29 27.88125 MHz
Channel 30 27.89125 MHz
Channel 31 27.90125 MHz
Channel 32 27.91125 MHz
Channel 33 27.92125 MHz
Channel 34 27.93125 MHz
Channel 35 27.94125 MHz
Channel 36 27.95125 MHz
Channel 37 27.96125 MHz
Channel 38 27.97125 MHz
Channel 39 27.98125 MHz
Channel 40 27.99125 MHz

German, Czech and Hungarian "Auxiliary" channels 41-80

FM modulation only in Germany, Czech Republic and Hungary. Digital modes allowed on specified channels in Germany. Designated channels 41-80 (channels 1-40 are the US/CEPT standardized channels).

CB Channel Frequency
Channel 41 26.565 MHz
Channel 42 26.575 MHz
Channel 43 26.585 MHz
Channel 44 26.595 MHz
Channel 45 26.605 MHz
Channel 46 26.615 MHz
Channel 47 26.625 MHz
Channel 48 26.635 MHz
Channel 49 26.645 MHz
Channel 50 26.655 MHz
Channel 51 26.665 MHz
Channel 52 26.675 MHz
Channel 53 26.685 MHz
Channel 54 26.695 MHz
Channel 55 26.705 MHz
Channel 56 26.715 MHz
Channel 57 26.725 MHz
Channel 58 26.735 MHz
Channel 59 26.745 MHz
Channel 60 26.755 MHz
Channel 61 26.765 MHz
Channel 62 26.775 MHz
Channel 63 26.785 MHz
Channel 64 26.795 MHz
Channel 65 26.805 MHz
Channel 66 26.815 MHz
Channel 67 26.825 MHz
Channel 68 26.835 MHz
Channel 69 26.845 MHz
Channel 70 26.855 MHz
Channel 71 26.865 MHz
Channel 72 26.875 MHz
Channel 73 26.885 MHz
Channel 74 26.895 MHz
Channel 75 26.905 MHz
Channel 76 26.915 MHz
Channel 77 26.925 MHz
Channel 78 26.935 MHz
Channel 79 26.945 MHz
Channel 80 26.955 MHz

Australian 27 MHz Marine CB

AM mode, equipment usually includes regular US 40-channels in addition to the frequencies below. 27.88 MHz (CH 88) and 27.86 MHz (CH 86) are monitored by coast stations for emergency/distress traffic.

CB Channel Frequency
Channel 68 27.680 MHz Commercial Boats/Fishing
Channel 72 27.720 MHz Commercial Boats/Fishing
Channel 82 27.820 MHz Commercial Boats/Fishing
Channel 86 27.860 MHz Supplementary Distress/Safety/Calling
Channel 88 27.880 MHz Distress/Safety/Calling
Channel 90 27.900 MHz Non-commercial Boats
Channel 91 27.910 MHz Non-commercial Boats
Channel 94 27.940 MHz Non-commercial Boats, Yacht clubs
Channel 96 27.960 MHz Non-commercial Boats
Channel 98 27.980 MHz Rescue calling/working (supplementary to 27.880 and 27.860 MHz)


New Zealand "CBL" and "CBH" channels

AM and SSB modulation. The CBH channels are the same as the US channels

CB Channel Frequency
Channel 1 26.330 MHz
Channel 2 26.340 MHz
Channel 3 26.350 MHz
Channel 4 26.370 MHz
Channel 5 26.380 MHz
Channel 6 26.390 MHz
Channel 7 26.400 MHz
Channel 8 26.420 MHz
Channel 9 26.430 MHz
Channel 10 26.440 MHz
Channel 11 26.450 MHz
Channel 12 26.470 MHz
Channel 13 26.480 MHz
Channel 14 26.490 MHz
Channel 15 26.500 MHz
Channel 16 26.520 MHz
Channel 17 26.530 MHz
Channel 18 26.540 MHz
Channel 19 26.550 MHz
Channel 20 26.570 MHz
Channel 21 26.580 MHz
Channel 22 26.590 MHz
Channel 23 26.620 MHz
Channel 24 26.600 MHz
Channel 25 26.610 MHz
Channel 26 26.630 MHz
Channel 27 26.640 MHz
Channel 28 26.650 MHz
Channel 29 26.660 MHz
Channel 30 26.670 MHz
Channel 31 26.680 MHz
Channel 32 26.690 MHz
Channel 33 26.700 MHz
Channel 34 26.710 MHz
Channel 35 26.720 MHz
Channel 36 26.730 MHz
Channel 37 26.740 MHz
Channel 38 26.750 MHz
Channel 39 26.760 MHz
Channel 40 26.770 MHz

Russian CB Channel Frequencies

Russia as two sets of 120 channels for a total of 240 channels. Unlike most countries, Russia has 5 kHz channel steps. Frequency coverage is 26.510 MHz to 27.855 MHz.

AM and FM modulation. Channels are referred using an alphanumeric designation that provides the band, channel number, and "raster" (last digit of frequency, 5 or 0) plus the mode. Most radios used in Russia use the band letter + channel number format to display channels, and/or include a frequency display due to the complexity of the system. The "E" channels are more commonly used in Russia compared to the older-generation "R" channels (original Russian/Polish/Eastern European CB channel plan).

Common band designations:

B band: 26.515-26.955 MHz (E raster) 26.510-26.950 MHz (R raster) C band: 26.965-27.405 MHz (E raster) 26.960-27.400 MHz (R raster) D band: 27.415-27.855 MHz (E raster) 27.410-27.850 MHz (R raster) + channel number + mode (AM or FM, often written as "A" or "F")

For example, 27.185 MHz FM is designated

C19EF (band C, channel 19, E raster/channeling, FM mode)

Table of channels omitted due to sheer number of channels available. Modern CB radios sold in Europe and Asia often include "RU" mode as a country setting. More often than not, this opens up the radio to 25.615 MHz to 30.105 MHz in 5/10 kHz steps AM/FM mode. Russia suffers from heavy interference on the 10 meter amateur radio band due to the high number of radios operating above and below the legal CB frequencies and nil enforcement on the behalf of Russian authorities. Therefore, the "Russia CB band" can be difficult to pin down as far as the actual frequencies, some sources now simply state "25.610 to 30.120 MHz".

Japan CB Radio Frequencies

AM modulation only. 0.5 watt (500mw) power limit. Often included as part of the Japanese "DSB Fishery Radio Service" (27 MHz fishery radio system) that covers 26.760 MHz to 27.988 MHz in odd steps. Illegal CB operations on the American/Australian frequencies is apparently common in Japan, despite the potential for interference with marine radio service allocations.

CB Channel Frequency
Channel 1 26.968 MHz
Channel 2 26.976 MHz
Channel 3 27.040 MHz
Channel 4 27.080 MHz
Channel 5 27.088 MHz
Channel 6 27.112 MHz
Channel 7 27.120 MHz
Channel 8 27.144 MHz

South Africa (27 MHz CB)

AM and SSB (USB only).

CB Channel Frequency
Channel 19 27.185 MHz
Channel 20 27.205 MHz
Channel 21 27.215 MHz
Channel 22 27.225 MHz
Channel 23 27.255 MHz
Channel 24 27.235 MHz
Channel 25 27.245 MHz
Channel 26 27.265 MHz
Channel 27 27.275 MHz

South Africa (29 MHz CB)

AM on all channels. SSB only allowed on specified channels. Some channels have multiple designations depending on their intended use.

CB Channel Frequency
Channel 1 29.7100 MHz AM - General Purpose
Channel 2 29.7225 MHz AM - General Purpose
Channel 3 29.7350 MHz AM - General Purpose
Channel 4 29.7475 MHz AM/SSB - Civil Defense Channel 2
Channel 5 29.7600 MHz AM - General Purpose
Channel 6 29.7725 MHz AM - Marine Channel 2/B
Channel 7 29.7850 MHz AM - General Purpose
Channel 8 29.7975 MHz AM - General Purpose
Channel 9 29.8100 MHz AM - General Purpose
Channel 10 29.8225 MHz AM/SSB - Civil Defense Channel 2
Channel 11 29.8350 MHz AM - General Purpose
Channel 12 29.8475 MHz AM/SSB - Civil Defense Channel 1
Channel 13 29.8600 MHz AM - General Purpose
Channel 14 29.8725 MHz AM - General Purpose
Channel 15 29.8850 MHz AM - General Purpose
Channel 16 29.8975 MHz AM - General Purpose
Channel 17 29.9100 MHz AM - General Purpose
Channel 18 29.9225 MHz AM/SSB - Civil Defense Channel 5
Channel 19 29.9350 MHz AM - Marine Channel 1/A
Channel 20 29.9475 MHz AM/SSB - Civil Defense Channel 3
Channel 21 29.9600 MHz AM - General Purpose
Channel 22 29.9725 MHz AM - Marine Channel 3/C
Channel 23 29.9850 MHz AM/SSB - Civil Defense Channel 6


India 27 channel 27MHz CB

AM and FM modes allowed.

CB Channel Frequency
Channel 1 26.965 MHz
Channel 2 26.975 MHz
Channel 3 26.985 MHz
Channel 4 27.005 MHz
Channel 5 27.015 MHz
Channel 6 27.025 MHz
Channel 7 27.035 MHz
Channel 8 27.055 MHz
Channel 9 27.065 MHz
Channel 10 27.075 MHz
Channel 11 27.085 MHz
Channel 12 27.105 MHz
Channel 13 27.115 MHz
Channel 14 27.125 MHz
Channel 15 27.135 MHz
Channel 16 27.155 MHz
Channel 17 27.165 MHz
Channel 18 27.175 MHz
Channel 19 27.185 MHz
Channel 20 27.205 MHz
Channel 21 27.215 MHz
Channel 22 27.225 MHz
Channel 23 27.255 MHz
Channel 24 27.235 MHz
Channel 25 27.245 MHz
Channel 26 27.265 MHz
Channel 27 27.275 MHz

Brazilian "high band" channels 41-80

AM and SSB allowed. Up to 25 watts output power. Channels 1-40 are the same as the US FCC/CEPT channels. The frequencies 27.445 MHz, 27.495 MHz, 27.545 MHz, 27.595 MHz and 27.645 MHz are skipped in this channel plan. They are, however, still heavily used in Brazil and elsewhere in Latin America.


CB Channel Frequency
Channel 41 27.415 MHz
Channel 42 27.425 MHz
Channel 43 27.435 MHz
Channel 44 27.455 MHz
Channel 45 27.465 MHz
Channel 46 27.475 MHz
Channel 47 27.485 MHz
Channel 48 27.505 MHz
Channel 49 27.515 MHz
Channel 50 27.525 MHz
Channel 51 27.535 MHz
Channel 52 27.555 MHz
Channel 53 27.565 MHz
Channel 54 27.575 MHz
Channel 55 27.585 MHz
Channel 56 27.605 MHz
Channel 57 27.615 MHz
Channel 58 27.625 MHz
Channel 59 27.635 MHz
Channel 60 27.655 MHz
Channel 61 27.665 MHz
Channel 62 27.675 MHz
Channel 63 27.685 MHz
Channel 64 27.695 MHz
Channel 65 27.705 MHz
Channel 66 27.715 MHz
Channel 67 27.725 MHz
Channel 68 27.735 MHz
Channel 69 27.745 MHz
Channel 70 27.755 MHz
Channel 71 27.765 MHz
Channel 72 27.775 MHz
Channel 73 27.785 MHz
Channel 74 27.795 MHz
Channel 75 27.805 MHz
Channel 76 27.815 MHz
Channel 77 27.825 MHz
Channel 78 27.835 MHz
Channel 79 27.845 MHz
Channel 80 27.855 MHz

27 MHz 11 meter band CB Repeaters

25-30 MHz simplex echo parrot CB repeaters, mostly operating in the 26 MHz and 27 MHz CB bands (Russian bands). Commonly referred to as "parrots" or "echo repeaters" these are simplex repeaters (store-and-forward). Due the easy availability and low prices of these devices, 11-meter repeaters are becoming more and more popular, especially in parts of the world where FM mode is allowed/used in addition to AM/SSB. Russia is the heaviest user of CB repeaters, due to its large size, heavy reliance on CB for the taxi, delivery, trucking and roadside assistance industries.

All listed repeaters operate in FM mode. The vast majority are carrier squelch, however some require a CTCSS tone (usually 77.0Hz or 88.5Hz) to open the repeater and/or access cross-band links. If any CTCSS/PL tone is known, it is included with the repeater listing.

CB Repeater Networks Crossband Link to VHF/UHF Systems and Internet Services

Several of these repeaters operate as part of larger "networks" or "systems" linked together via the Internet or VHF / UHF Radio services such as PMR446, LPD433, FRS, GMRS, MURS or other country-specific systems. It appears that the most popular crossband links are in the 433.075-434.775 MHz LPD433 service in Russia and the 446.0-446.2 MHz PMR446 service elsewhere in Europe In the Americas, both the UHF FRS and GMRS services and the VHF MURS services have been used to link CB repeaters.

Cross band repeat and links sometimes operate on unlicensed frequencies and/or operate with higher-than-legal power levels within legal frequencies. For example, maximum power output on LPD433 is 10mW, however several Russian 27 MHz repeaters are using modified high power amateur radios on the LPD433 frequencies as part of their linking system. Other linking systems used modified 43 MHz Italian "VHF CB" equipment such as the Alan HM43, Intek/Dragon SY-5430 which is popular in Russia and the CIS nations for its capability to be easily modified to cover 42.3000 MHz to 45.0875 MHz at 25w output power.

CB Repeater Listing

Three repeaters on this list are true split-frequency systems:

Output Frequency Input Frequency Location Remarks
26.565 MHz 27.405 MHz Germany CH41 output/CH40 input (German 80-channel CB)
27.085 MHz 27.175 MHz Netherlands Multiple TX/RX sites, each site assigned a CW ID transmitted at the end of transmission
27.620 MHz 27.820 MHz Jamaica Optional CTCSS tone: 88.5Hz


Due to the nature of these simplex repeaters being hobbyist owned/operated, this list is likely, and is likely to remain, incomplete. the repeaters listed below may switch frequencies or temporarily go off the air please update this list with any new information regarding frequencies, transmit location or transmit power for entries missing this information.

Below is a list of confirmed [as of December 2016] CB repeaters and their location (if known).

Frequency Location Remarks
26.565 MHz Germany Output (input 27.405 MHz)
26.575 MHz Germany
26.675 MHz
26.685 MHz Western Russia
26.715 MHz Chelyabinsk, Russia
26.915 MHz
26.925 MHz
26.935 MHz
26.970 MHz Poland (multiple sites)
26.970 MHz Russia (multiple sites)
26.970 MHz Lithuania
26.975 MHz Samara, Russia 10 watt TX power
26.985 MHz Samara, Russia 10 watt TX power
26.985 MHz Tver, Russia
26.985 MHz Sweden At least two sites (see also 27.205 MHz FM)
27.000 MHz Kiev, Ukraine
27.005 MHz Yekaterinburg (Ekaterinburg), Russia
27.015 MHz Moscow, Russia (multiple sites)
27.015 MHz Samara, Russia 10 watt TX power
27.015 MHz Naro-Fominsk, Russia
27.030 MHz Minsk, Belarus
27.030 MHz Shymkent, Kazakhstan
27.035 MHz Kiev, Ukraine 4 watt TX power
27.040 MHz Minsk, Belarus
27.060 MHz Kiev, Ukraine
27.070 MHz
27.075 MHz Eastern Russia
27.085 MHz Altai Region, South-Central Russia
27.085 MHz Netherlands (several locations) Simplex, each location ends transmission with single letter CW ID
27.085 MHz Netherlands (several locations) Output (input 27.175 MHz), each location has unique end of transmission CW ID
27.100 MHz Gomel, Belarus 100 watt TX power
27.100 MHz Krasnodar, Russia
27.105 MHz Ulyanovsk, Russia 4 watt TX power
27.105 MHz Astana, Kazakhstan
27.110 MHz Poland
27.110 MHz Russia
27.135 MHz Moscow, Russia
27.150 MHz Poland
27.165 MHz Issyk, Kazakhstan
27.170 MHz Poland
27.170 MHz Russia (multiple sites)
27.175 MHz Taraz, Kazakhstan
27.175 MHz Netherlands (several locations) Input (Output 27.085 MHz), each location has unique end of transmission CW ID
27.180 MHz Multiple sites Eastern Europe/Russia
27.185 MHz Multiple sites Eastern Europe/Russia
27.190 MHz
27.200 MHz Zaykova, Russia
27.205 MHz Sweden DTMF-activated playback
27.205 MHz Russia (multiple sites)
27.210 MHz Zhukovsky (Moscow Oblast), Russia
27.215 MHz Almaty, Kazakhstan
27.215 MHz Russia (multiple sites)
27.220 MHz
27.225 MHz Altai Region, South-Central Russia
27.230 MHz
27.235 MHz
27.240 MHz Moscow, Russia 10 watt TX power, 5/8 wave vertical antenna
27.245 MHz Almaty, Kazakhstan 12 watt TX power, 1/2 wave vertical antenna
27.250 MHz Belarus
27.255 MHz Kiev, Ukraine 4 watt TX power
27.260 MHz Krivoi Rog (Kryvyi Rih), Ukraine
27.260 MHz Moscow, Russia 10 watt TX power, 5/8 wave vertical antenna
27.270 MHz Saratov, Russia
27.270 MHz Kiev, Ukraine
27.275 MHz Kemerovo, Russia Cross-band link to 434.500 MHz
27.275 MHz Russia (several other sites)
27.290 MHz Minsk, Belarus
27.295 MHz Tyumen, Russia
27.300 MHz
27.305 MHz Western Europe
27.315 MHz Russia (multiple sites)
27.325 MHz
27.330 MHz Saratov, Russia Located on Sokolova Mountain (wide coverage area)
27.335 MHz Almaty, Kazakhstan
27.355 MHz St. Petersburg, Russia
27.370 MHz Western Russia
27.375 MHz Vladivostok, Russia
27.390 MHz Kaliningrad, Russia 10 watt TX power, 5/8 wave vertical antenna
27.395 MHz Netherlands President Grant II RX/TX Radio
27.405 MHz Germany Input to 26.565 MHz
27.415 MHz Yekaterinburg (Ekaterinburg), Russia
27.425 MHz Rostov, Russia CTCSS 88.5Hz Cross-band link to 434.575 MHz CTCSS 77.0Hz
27.430 MHz
27.450 MHz
27.455 MHz Yekaterinburg (Ekaterinburg), Russia
27.470 MHz
27.505 MHz Moscow, Russia
27.515 MHz Obninsk (Kaluga Oblast), Russia
27.580 MHz Moscow, Russia
27.605 MHz Kazan, Russia CTCSS 88.5Hz, Alinco DR-03T 10 watt transmitter with UHF link
27.605 MHz Moscow, Russia
27.620 MHz Jamaica Output (input 27.820 MHz CTCSS 88.5Hz)
27.625 MHz Russia (multiple locations)
27.630 MHz Moscow, Russia
27.635 MHz Moscow, Russia
27.635 MHz St. Petersburg, Russia
27.650 MHz Western Europe
27.665 MHz Moscow, Russia 5/8 wave vertical antenna
27.675 MHz Russia
27.765 MHz Germany
27.820 MHz Jamaica Input CTCSS 88.5Hz (output 27.620 MHz)
27.840 MHz Poland
27.875 MHz Rostov, Russia



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