Most offenders are not caught for interfering with other CB users; often, their selfmodified equipment generates harmonics and spurs which cause interference to services outside the citizens band and to consumer equipment. South Africa also permits use of standard CB channels1927 (27.18527.275MHz) with AM / SSB permitted. They typically have a knob and display that reads up to channel40, but include an extra band selector that shifts all 40channels above or below the band and a "+10kHz" button to reach the model control "A"channels. The frequency band is HF, 26.9650MHz to 27.4050MHz (40 channels), power output is 4watts for AM and FM and 12watts PEP for SSB. However, frequencies such as 27.005MHz AM are widely pirated in Japan with very high power transmitters. The 11 meter band is used by both CB radio, as well as freeband unlicensed hobbyists, Church radio broadcasts in Ireland and elsewhere in Europe, the military, for studio-to-transmitter links (STLs), data links, buoys, fishnet tracking systems, pagers and other non-voice purposes. Project #1 - 2000. [citation needed] Reality is far different: Attempting an SSB conversation while an AM conversation is in progress results in jammed communications for everyone. Attempts by law-abiding CB users to increase regulatory oversight have been ineffective. A dipole inside a loft. The 18channel band plan used 16channels of the 23channel CB radios plus 2extra channels at 27.095 and 27.195MHz, to make up the 18channels. The FCC originally restricted channel11 for use as the calling channel. [33] The widely used channel for the Young Farmers' Club is channel11. HamSphere is a shortwave simulation. Common freeband frequencies include: See also: data link, telemetry, telecommand and long range wireless control, pager systems, on-site paging and hospital paging systems on 11 meters 26 MHz band 27 MHz band list here and here. The older 23channel radios built under the old specifications typically had an output of around 3.5 to 3.8watts output when measured at the antenna connector. As in Germany, digital modes are allowed on certain frequencies. This page has been accessed 106,570 times. By the late 1960s, advances in solid-state electronics allowed the weight, size, and cost of the radios to fall, giving the public access to a communications medium previously only available to specialists. Yet another logging software for 11 meters band. It is also illegal to use these radios outside of the Amateur Radio bands by anyone in the US, since they are not type-certified for other radio services and usually exceed authorized power limits. Frequency: Ch. It does not require a license like other transmitters. Most contemporary radios built for those markets can do "fives" as well as "zeroes" out of the box. what are some good models of used ham radios that can be converted to 11 meters and work on AM as well as SSB ? Aside from legal CB allocations and freebanding (or outbanding), there are several legal licensed services allocated to this interesting chunk of spectrum. These frequencies may have evolved because tuned circuits (particularly antennas) work best in the middle of the band; the frequency for channel19 (not channel20) is the center of the 40channel US band and other things being equal, signals will be transmitted and heard the farthest. The Indonesian government legalized CB on 6October 1980 with a decision by the Minister of Communications, the "Ministerial Decree on the Licensing for the Operation of Inter-Citizens Radio Communication". In September 2021 the FCC approved the use of FM on CB radio. The current specification is simply "4watts output (AM) or 12watts output (SSB)" as measured at the antenna connector on the back of the radio. Commonly there is 'tree' major types of different CB-Radio's Type 1: Uses channels to decide operating frequency. HB9CV - 2 Element Yagi for the 11 meter band. 2200 Meters When it comes to Ham Radio, the only official LF band is 2200 meters. American AM gear has also been exported to Europe. Frequencies, power levels and modes (such as frequency modulation (FM), amplitude modulation (AM), and single-sideband modulation (SSB), often vary from country to country; use of foreign equipment may be illegal. The loading coil may be on the bottom, middle, or top of the antenna, while some antennas are wound in a continuously-loaded helix. S9s successor was Popular Communications, which had the same editor under a different publisher beginning in 1982. In the early 1970s Radio Shack sold a "base station" CB radio that contained a crystal for each of the 23channels, two extra slots existed, and one could order the 22A & 22B crystals for an easy plug-in. Used mostly by truckers and some off road clubs (4WD) Not extremely reliable, gets pretty crowded on the channels and the language on there can be pretty offensive at times. For each band, only those license classes with privileges on that band are listed. Initially, the FCC intended for CB to be the "poor man's business-band radio", and CB regulations were structured similarly to those regulating the business band radio service. [40] Lax enforcement enables manufacturers of illegal linear amplifiers to openly advertise their products; many CB dealers include these amplifiers in their catalogs. By 1980, CB radio was becoming a popular pastime in Britain; as late as the summer of 1981 the British government was still saying that CB would never be legalized on 27MHz, proposing a UHF service around 860MHz called "Open Channel" instead. The United Kingdom has an additional 40channels between 27.60125 and 27.99125MHz, also making 80channels in total. These kits are designed to have a mobile whip screwed on top (a full-length, quarter-wave steel whip is preferred) and mounted on a mast. When looking at the FCC/CEPT channel list there are some channels with a spacing of 20kHz instead of the regular 10kHz step. Under this class assignment, a CB radio is classified as a "Personal Radio Service device". Freeband 11 Meter Frequencies - Guide to 11m Frequencies Guide to 11 meter DX calling frequencies, Freeband 11 Meter and CB Calling Frequencies Channels, Freeband 11 Meter and CB Digital Modes ROS PSK31 CW SSTV Channels, 11 meter Beacon Frequencies 11m CB Beacon Channels 11m Beacon Bands, Federal and Non-Federal Allocations 25 MHz to 30 MHz, Church radio broadcasts in Ireland and elsewhere in Europe, data links, buoys, fishnet tracking systems, pagers and other non-voice purposes, The original 11 meter amateur radio allocation was 26.96 MHz to 27.23 MHz and it was from this that the original Class D CB service was born, shortwave broadcast band SWBC or HFBC band, Remote Broadcast Pickup (Studio Transmitter Link or STL), UK FM CB radio channel 1 is 27.60125 MHz FM, telecommand and long range wireless control, legal CB band - "mid band", "FCC band" or "CEPT" band, https://www.hfunderground.com/wiki/index.php/11_meter, Time and Frequency Standard Stations - WWV on 25.000 MHz 25MHz 25000 kHz operates here, Government and Military Fixed/Mobile, including the, Citizen's Band - CB radio - NZ 26 MHz 40 channel CB radio service - CBL channels 26.33 MHz - 26.77 MHz, Citizen's Band - CB radio - Russia - "PO" Channel Raster or "zeros" - 120 channels, Citizen's Band - CB radio - Russia - "EU" Channel Raster or "fives"- 120 channels, Citizen's Band - CB radio - Germany, Czech Republic and other European countries (80 channels 26.565 MHz - 27.405 MHz), 1w DSB 1 watt double side band fishery radio - Japan Japanese DSB fisheries radio 27 MHz service marine fixed mobile, Citizen's Band - CB radio - Brazil and other Latin American countries (80 channels 26.965 MHz - 27.855 MHz), Citizen's Band - CB radio - United Kingdom UK CB 27/81 UK FM CB 27.60125 MHz - 27.99125 MHz 40 channels, Government and military fixed/mobile, including SINCGARS starting at 30.000 MHz, 27.555 MHz USB - International 11m SSB calling frequency, 26.285 MHz USB - International 11m SSB calling frequency - secondary to 27.555 MHz, 27.385 MHz LSB - American 11m CB SSB calling channel 38LSB, 27.425 MHz LSB - American 11m SSB calling frequency - 27.410 to 27.655 in 5 kHz steps, most activity in the 27.420 MHz to 27.505 MHz range, 26.915 MHz AM - American 11m AM calling frequency - USA "915", 26.805 MHz FM - American 11m FM calling frequency - USA "805 FM" "26805 FM" or "26.805 FM", 27.805 MHz FM - American 11m FM calling frequency - alternate to 26.805 MHz FM, 27.605 MHz FM - Alternate to 27.600 MHz FM - note that, 27.575 MHz FM - American 11m FM calling frequency - USA "575 FM" "27575 FM" or "27.575 FM", 27.600 MHz FM - American 11m FM calling frequency - primary (unless QRM from SSB or UK FM CB stations is an issue, then use 27.575 MHz FM), 27.650 MHz FM - American 11m FM calling frequency - alternate, 27.355 MHz LSB - Australia and Oceania 11m SSB calling channel 35LSB, 26.720 MHz LSB - New Zealand 26MHz SSB CB calling channel 35LSB, 27.315 MHz FM - European FM mid band CB calling channel 31 FM -, 27.305 MHz FM - European FM mid-band CB calling channel 30 FM- secondary to 27.315 MHz FM, 27.125 MHz AM - European AM mid band CB calling channel 14 AM, 27.455 MHz USB - Spanish language SSB calling frequency, 26.555 MHz LSB - Spanish language SSB calling frequency, 26.225 MHz USB - Spanish language SSB calling frequency, 26.425 MHz USB - Polish SSB calling frequency, 26.435 MHz USB - Polish SSB calling frequency, 27.995 MHz USB - Top end freeband 11 meter calling frequency, 27.99125 MHz FM - UK FM CB channel 40 - UK calling/working channel, 27.98125 MHz FM - UK FM CB channel 39 - UK calling/working channel, 27.975 MHz USB - French language freeband working channel, 27.97125 MHz FM - UK FM CB channel 38 - UK calling/working channel, 27.965 MHz USB - French language freeband working channel - including North Africa and other areas, 27.96125 MHz FM - UK FM CB channel 37 - UK calling/working channel, 27.95125 MHz FM - UK FM CB channel 36 - UK calling/working channel, 27.94125 MHz FM - UK FM CB channel 35 - UK calling/working channel, 27.855 MHz FM - 11 meter freeband calling and working frequency - FM mode, 27.855 MHz USB - 11 meter freeband calling and working frequency - USB mode, 27.805 MHz FM - US FM 11 meter FM CB working channel, 27.800 MHz FM - US FM 11 meter FM CB working channel - see also: UK FM CB Channel 21 on 27.80125 MHz FM, 27.78125 MHz FM - UK FM CB channel 19 - UK calling/working channel, 27.781 MHz or 27.781 FM, 27.775 MHz FM - US FM 11 meter FM CB working channel, 27.765 MHz USB - German 11m SSB - "Deutsche Welle", 27.650 MHz FM - US FM 11 meter FM CB working channel - alternate to 27.575 MHz FM and 27.600 MHz FM, 27.625 MHz FM - US FM 11 meter FM CB working channel, 27.605 MHz FM - US FM 11 meter FM CB working channel - note that UK FM CB channel 1 is only 3.75 kHz away, 27.60125 MHz FM - UK FM CB channel 1 - UK calling channel, 27.580 MHz USB - Kilo Papa 11m SSB calling frequency, 27.515 MHz LSB - Jamaica and Caribbean calling frequency, 27.510 MHz LSB - Jamaica and Caribbean calling frequency, 27.500 MHz USB - Italy - Papa Charlie DX Club, 27.465 MHz AM - Italian 11m AM calling channel - canal 45 or channel 45, 27.455 MHz USB - Spanish language SSB calling - Latin America, 27.455 MHz LSB - American 11m SSB calling/working frequency - Canadian and US stations, 27.315 MHz FM - US FM CB Calling Working Channel FM CB 31 FM, 27.285 MHz USB - Finland SSB calling - Nordic SSB calling - mid band CB channel 28 USB, 27.285 MHz AM - American 11m high power AM calling - CB channel 28, 27.275 MHz USB - UK SSB calling England mid band SSB frequency mid band CB channel 27, 27.275 MHz FM - US FM CB Calling Working Channel FM CB 27 FM, 27.270 MHz FM - Russian FM calling channel (Polish frequency "zeros") channel 27, 27.265 MHz AM - American 11m high power AM calling - CB channel 26, 27.235 MHz USB - Swedish and Nordic SSB calling Sweden - mid band CB channel 24 USB, 27.195 MHz FM - US FM Calling unofficial - AM voice noted here as well, 27.190 MHz USB - European SSB calling frequency - in between channels 19 and 20, 27.135 MHz FM - Russian FM calling and road channel - mid band CB channel 15, 27.135 MHz AM - Russian AM calling and road channel - mid band CB channel 15, 27.135 MHz USB - German 11m SSB in-band calling/working frequency, 27.125 MHz AM - UK AM calling England mid band SSB frequency mid band CB channel 14, 27.085 MHz AM - American 11m high power AM calling - CB channel 11, 27.065 MHz AM - Spanish language AM calling - CB channel 9, 27.025 MHz AM - American 11m high power AM calling - CB channel 6 - The Super Bowl, 27.005 MHz AM - German AM CB calling - CB channel 4 AM, 26.965 MHz FM - German FM CB calling - CB channel 1 FM, 26.925 MHz FM - American 11m FM working frequency - low band 26 MHz FM, 26.875 MHz FM - American 11m FM working frequency - low band 26 MHz FM, 26.835 MHz AM - American 11m AM calling frequency, 26.825 MHz FM - American 11m FM working frequency - low band 26 MHz FM (alternate to 26.805 MHz FM), 26.815 MHz AM - American 11m AM calling frequency, 26.805 MHz FM - American 11m FM calling frequency - 26 MHz FM calling, 26.775 MHz AM - American 11m AM calling frequency, 26.715 MHz AM - Spanish language AM calling, 26.705 MHz AM - Spanish language AM calling, 26.585 MHz AM - Spanish language AM calling - Mexico and others - often very busy, 26.575 MHz FM - German FM CB calling - German 80 channel CB channel 42, 26.500 MHz USB - Caribbean calling/working SSB 11 meter frequency, 26.500 MHz LSB - Caribbean calling/working SSB 11 meter frequency, 26.450 MHz AM - New Zealand 26MHz AM CB trucking channel 11, 27.800 MHz USB - 11m SSTV frequency - Alfa Tango DX Group (secondary or alternate to 27.700 USB and 27.735 USB), 27.735 MHz USB - 11m SSTV international frequency - secondary to 27.700 USB, also digital SSTV, 27.700 MHz USB - 11m SSTV international frequency, 27.635 MHz FM - European digital modes ROS data modes channel, 27.635 MHz USB - European digital modes ROS data modes channel, 27.500 MHz USB - CW calling - other digital modes, 27.500 MHz - ROS data mode - alternate to 27.635 MHz, 27.235 MHz, 27.245 MHz, 27.255 MHz, 27.500 MHz CW - 11 meter digital modes - CW, other digital modes (also beacon frequency) - 27495 to 27505 beacons, 27.255 MHz USB - WSPR weak signal digital modes - also alternate ROS datamode, PSK31 and packet radio channel - CB channel 23, 27.245 MHz FM - European packet PSK31 ROS channel - CB channel 25, 27.245 MHz USB - European digital modes ROS data modes channel - CB channel 25, 27.235 MHz FM - European packet PSK31 channel - CB channel 24, 27.235 MHz USB - European digital modes ROS data modes channel - CB channel 24, 27.035 MHz FM - Packet radio CB radio - Europe - designated digital CB frequency in Germany - CEPT 40 channel mid band CB channel 7, 27.025 MHz FM - Packet radio CB radio - Europe - designated digital CB frequency in Germany - CEPT 40 channel mid band CB channel 6, 26.925 MHz FM - Packet radio CB radio - Europe - designated digital CB frequency in Germany - German 80 channel CB channel 77, 26.915 MHz FM - Packet radio CB radio - Europe - designated digital CB frequency in Germany - German 80 channel CB channel 76, 26.860 MHz LSB - European packet and PSK31 frequency - packet radio 1200 baud, 26.850 MHz LSB - European packet and PSK31 frequency - packet radio 1200 baud, 26.840 MHz LSB - European packet and PSK31 frequency - packet radio 1200 baud, 26.830 MHz LSB - European packet and PSK31 frequency - packet radio 1200 baud, 26.820 MHz LSB - European packet and PSK31 frequency - packet radio 1200 baud, 26.810 MHz LSB - European packet and PSK31 frequency - packet radio 1200 baud, 26.740 MHz LSB - European packet and PSK31 frequency - packet radio 1200 baud, 26.675 MHz FM - Packet radio CB radio - Europe designated digital CB frequency in Germany - German 80 channel CB channel 53, 26.685 MHz FM - Packet radio CB radio - Europe designated digital CB frequency in Germany - German 80 channel CB channel 52, 27.495 MHz - 27.505 MHz - several active CW beacons around 27.499 MHz, 27.4996 MHz, 27.500 MHz and 27.501 MHz, 27.120 MHz - 27.130 MHz - especially around 27.120 MHz and 27.125 MHz, 27.140 MHz - 27.150 MHz - several active CW beacons around 27.140 MHz - 27.143 MHz including 27141.6 27.141.6 27.1416 MHz 27140.8 27.1408, 27.190 MHz - 27.260 MHz - active beacons on 27.205 MHz, 27.235 MHz, 27.240 MHz, 27.245 MHz, 27.250 MHz and 27.255 MHz, 27120 kHz 27.120 kHz - ISM central frequency, 26.225 MHz USB - Latin American SSB activity, 26.285 MHz USB - 26 MHz international calling frequency (commonly used in Europe), 26.305 MHz AM - Latin American (and American) AM activity, 26.315 MHz AM - popular out-of-band trucker channel USA, 26.375 MHz AM - popular out-of-band trucker channel USA, 26.405 MHz AM - popular out-of-band trucker channel USA, 26.500 MHz LSB - Caribbean and Latin American calling/working frequency, 26.500 MHz USB - Caribbean and Latin American calling/working frequency, 26.555 MHz LSB - very active in Mexico and Central/South America (and Caribbean), 26.565 MHz FM - German FM CB DX calling channel (Channel 41), 26.575 MHz FM - German FM CB DX calling channel (Channel 42), 26.585 MHz AM - Mexican trucker channel, often very busy, 26.605 MHz AM - alternate to 26.585 MHz (see also, 26.575 MHz, 26.595 MHz), 26.675 MHz AM - popular out-of-band trucker channel USA, 26.685 MHz AM - popular out-of-band trucker channel USA, 26.695 MHz AM - alternate to 26.705 MHz and 26.715 MHz, 26.705 MHz AM - Puerto Rico, Florida and other Caribbean AM stations, often extremely powerful, 26.725 MHz AM - alternate to 26.705 MHz and 26.715 MHz, 26.735 MHz AM - CB channel 19 "down one band" - truckers are often heard here (see also 27.635 MHz), 26.740 MHz LSB - European packet and PSK31 frequency, 26.745 MHz AM - popular out-of-band trucker channel USA, 26.755 MHz AM - often active in southern USA + every 10 kHz to 26.955 MHz, 26.775 MHz AM - often active in southern USA (channel 22 down one band - 27.225 MHz - .450 MHz), 26.805 MHz AM - Channel 23 down one band, popular in North America, Latin America and Caribbean, 26.810 MHz LSB - European packet and PSK31 frequency, 26.815 MHz AM - CB channel 26 down one band (active during band openings), 26.820 MHz LSB - European packet and PSK31 frequency, 26.830 MHz LSB - European packet and PSK31 frequency, 26.835 MHz AM - CB channel 28 down one band (similar to 26.815 MHz, 26.905 MHz, 26.915 MHz, etc), 26.840 MHz LSB - European packet and PSK31 frequency, 26.845 MHz AM - popular out-of-band trucker channel USA, 26.855 MHz AM - popular out-of-band trucker channel USA, 26.865 MHz AM - popular out-of-band trucker channel USA, 26.875 MHz AM - popular out-of-band trucker channel USA, 26.885 MHz AM - alternate to 26.915 MHz, others, 26.895 MHz AM - popular out-of-band trucker channel USA, 26.905 MHz AM - alternate to 26.915 MHz, others, Mexican taxicab dispatcher lady also logged on this frequency, 26.915 MHz AM - Big radios USA "915" channel 36 down one band, AM DX channel, 26.925 MHz AM - popular out-of-band trucker channel USA, 26.935 MHz AM - popular out-of-band trucker channel USA. [15][16] By the mid-1970s, hobbyists were experimenting with handheld radios and unauthorized 23channel American CB radios. The original 11 meter amateur radio allocation was 26.96 MHz to 27.23 MHz and it was from this that the original Class D CB service was born. For example, (C9EF, C09EF), behind it an optional designation (E) for "European" or mandatory (R) for "Russian" size frequency nets. See also channel assignments for CB use in the United States. We mimick Amateur Radio bands as well as the 11 meter band. Due to their rampant, unchecked use of linear amplifiers, American CB Radio operators are often referred to as "Alligators", by operators in other countries (suggesting American operators are "All Mouth and No Ears"). 27, 27.285 MHz AM - CB channel 28 - AM DX calling channel, see also: 27.025 MHz, etc, 27.315 MHz AM - CB channel 31 - AM DX calling channel (secondary), 27.315 MHz FM - European FM calling channel, 27.355 MHz LSB - CB channel 35 - SSB DX calling channel Australia and Oceania, 27.368 MHz USB - Militia Patriot SSB CB 11m tactical - USB mode 27.368 USB, 27.378 MHz USB - Militia Patriot SSB CB 11m tactical - USB mode 27.378 USB, 27.385 MHz LSB - CB channel 38 - SSB DX calling channel, LSB mode - North American SSB channel (see also: 27.375 LSB, 27.395 LSB). Military HF use [ edit] In the US and Canada, as well as the Americas (ITU Region 2) as a whole, there are no pre-designated HF allocations for military use. CB Action spawned several other popular publications, including a communications and scanning magazine and Amateur Radio Action magazine, produced over several decades and running to some 18volumes. Standard legal transceivers (UK FM + EU AM and SSB) The 2530MHz band (including the CB allocations and frequencies above and below the 26.527.860MHz band) is heavily used for taxi cab and other mobile two-way communications systems in Russia, Ukraine and other former USSR country states. At that time in Australia, licensed ham operators and Emergency Services still used the 11 meter band[17] which was not yet available for CB use. MPT1320 also restricted antennas to a maximum length of 1.5meters (5'), with base loading being the only type permitted for 27MHz operation. Unlike amateur radios with continuous frequency tuning, CBs manufactured for export are channelized. https:/. Some countries also have personal radio services in the UHF band, such as the European PMR446 and the Australian UHF CB. Originally, CB (named Citizens Radio by the Federal Communications Commission as of 1972) required the use of a callsign in addition to a purchased license ($20 in the early 1970s, reduced to $4 on March 1, 1975); however, when the CB craze was at its peak many people ignored the requirement and invented their own nicknames (known as "handles"). Before CEPT, most member countries used a subset of the 40U.S. channels. Marketing, import and sale of such radios is illegal if they are distributed as anything other than Amateur Radio transceivers. Some radios refer to the "mid band" (standard CB band) as "bandD" which shifts the letters up one (making 26.51526.955MHz "bandC" and 27.41527.855MHz "bandE". ", "An Indonesian government decision regarding CB, with frequency charts", "QTH.COM: FCC information regarding Illegal CB Radios", https://en.wikipedia.org/w/index.php?title=Citizens_band_radio&oldid=1152673588, Distress, urgency, safety and calling (primary), Distress, urgency, safety and calling (secondary), Commercial operations (ship-shore/ship-ship), Specific events only (ship-shore/ship-ship), Safety/rescue operations (ship-shore/ship-ship), Commercial fishing operations (ship-shore/ship-ship), the first letter (C) is indicated by a grid that contains a set of 40channels. New Zealand authorizes use of their New Zealand specific 40channel 26.33026.770MHz frequency plan in addition to the "standard" 40channel 26.96527.405MHz frequency plan for a total of 80HF CB channels.