The following chart shows the 11 metre band division numbers that are internationally agreed by DX organisations. seems they have much much better ears/rx than cb's/export . It requires arithmetic on the part of the operator to determine the actual frequency, although more expensive radios include a frequency counter or a frequency display two different components, providing an identical result. Citizens band radio (also known as CB radio ), used in many countries, is a land mobile radio system, a system allowing short-distance one-to-many bidirectional voice communication among individuals, using two-way radios operating on 40 channels near 27 MHz (11 m) in the high frequency (a.k.a. [21], Source:[22] With amplifiers being illegal to use on a CB, it seems that advertising and selling 11 meter amplifiers could tend to get someone in trouble. Frequency Allocations Even low-power 27MHz signals can sometimes propagate over long distances. This helped prevent overcrowding on channel11, enabling a CBer to monitor a town's home channel to contact another CBer from that town instead of a making a general call on channel11. Technology such as mobile telephones and the internet have provided people with other choices for communications. Since the band is right below the 10-meter ham radio band, most HF Ham radios will be able to receive these signals. 11 meter - HFUnderground [43] This restriction used to exist to keep CB as a local (line-of-sight) radio service; however, in the United States the restriction has been dropped. Far as ground plan antennas the best I have ever used is a 5/8 called a shockwave built in alabama. We may get paid if you buy something or take an action after clicking one of these. Support us with donation! A dipole inside a loft. This agreement provides interference-free operation for all operators by separating the far more powerful SSB stations from the AM stations. What's the 11 meter band - Ailunce Radio This falls close to the recommended 27.090 MHz to 27.150 MHz bands and the 27.120 MHz, 27.140 MHz, 27.141 MHz and 27.145 MHz frequencies. An unsuccessful petition was filed in 1973 to create a CB ClassE service at 220MHz, (part of the amateur radio 1m band at the time) which was opposed by amateur radio organizations and others. While they may be known by other names, such as the General Radio Service in Canada,[1] they often use similar frequencies (2628MHz) and have similar uses, and similar technical standards. U. S. "Citizen's Band" (11 Meter Band) Ch. Each country decides if it wants to authorize such a radio service from its domestic frequency authorizations, and what its standards will be; however, similar radio services exist in many countries. Novice and Technician licensees outside ITU Region 2 may use CW only between 7.025 and 7.075 MHz and between 7.100 and 7.125 MHz. Channel9 is reserved for emergencies, and channel11 is a calling channel. In 1948, the original CB radios were designed for operation on the 460470MHz UHF band. Feel free to cut and paste this list into your favourite word processing or DTP software and produce a chart in any format you like to help whilst DX'ing. A gray market trade in imported CB gear exists in many countries. Internet gateway stations are also beginning to appear; although illegal on 27MHz, these units are connected to other CB stations around the world. Voice actor Mel Blanc was also an active CB operator, often using "Bugs" or "Daffy" as his handle and talking on the air in the Los Angeles area in one of his many voice characters. Even though the 27 MHz Part 15 band extends from 26.980 MHz to 27.280 MHz, the second harmonics of these bands are 27.108 MHz MHz - 27.132 MHz or 27108 kHz to 27132 kHz. This page has been accessed 106,570 times. Such an array is intended to enhance performance to the front and back, while reducing it to the sides (a desirable pattern for long-haul truckers). not interested in exports . Classic is considered the marking when the main range is designated letter"C". 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. CB radio in the United States - Wikipedia Click picture for ordering and additional information. The increased use of CB radios in 1970s had made its way into films, television, and music by the late 1970s. The recent FCC decision to open the 11-meter band to Class D Citizens Band operation makes it possible for anyone (except those under 18 and aliens) to own and operate a short-wave transmitting and receiving station. Originally a bound book that resembled a telephone directory, it contains the name and addresses of radio stations in a given jurisdiction (country). 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". Refracting signals off the ionosphere is called skywave propagation, and the operator is said to be "shooting skip". For balanced 10-11 meter . Ham Radio for your PC and Smartphone - HamSphere The same publisher produced a magazine called RADIO! CB radios have a range of about 3 miles (4.8km) to 20 miles (32km) depending on terrain, for line of sight communication; however, various radio propagation conditions may intermittently allow communication over much greater distances. 27.125 is another very popular frequency for beacons 27.125 beacon 27.125 MHz beacon. RCRS was formerly known as the Class C Citizens Radio Service until the 1976 changes. [14] Most highway travelers monitor channel19. Instead of 2627MHz, Japan has authorized several UHF FM CB-type personal radio services in the 348MHz, 420422MHz and 903904MHz bands. Further information: High frequency beacon, Part 15 beacons - 22m and 11m bands, and Part 95 Class C RCRS type systems that operate as de facto beacons on the six 26-28 MHz RC frequencies 26995, 27045, 27095, 27145 and 27255. CB is the 11 meter band. The advantages of fewer users sharing a frequency, greater authorized output power, clarity of FM transmission, lack of interference by distant stations due to skip propagation, and consistent communications made the VHF (Very High Frequency) radio an attractive alternative to the overcrowded CB channels. 11DX.net is a privately operated, non-commercial web service for 11 meter operators run by an independent group of 11 meter operators. CB is still commonly used by long-haul truck drivers to communicate directions, traffic problems and other relevant matters. HB9CV - 2 Element Yagi for the 11 meter band - popular-hifi.com Changing radio propagation for long-distance communications due to the 11year sunspot cycle is a factor at these frequencies. During low sunspot activity it may be impossible to use skywave at all, except during periods of Sporadic-E propagation (from late spring through mid-summer). Formerly known as the 11 meter amateur radio band, it had been. Depending on the browser you use, you might need to adjust the print size in the print preview window for best results. The SE-10MB can also be adjusted to operate on the 11 Meter band. A CB radio or Personal Radio Service Device under Class Assignment does not need an individual license to operate in Malaysia if it adheres to the rules of the Warta Kerajaan Malaysia[29], On 1April 2010 the MCMC (Malaysian Communications and Multimedia Commission) released a new regulation[30] and later on 2017. Furthermore, illegal transmitters and amplifiers may not meet good engineering practice for harmonic distortion or "splatter", which may disrupt other communications and make the unapproved equipment obvious to regulators. Majority of countries require no license to operate the radio service. Part95 of the Code of Federal Regulations regulates the classD CB service, on the 27MHz band, since the 1970s and continuing today. CBers with AM-only radios are asked to not use channels36 through 40. Many radios sold in South Africa feature both the 27MHz and 29MHz bands. [12]:12 Channel10 was originally often used for highway travel communications east of the Mississippi River, and channel19 west of the Mississippi; channel19 then became the preferred highway channel in most areas, as it did not have adjacent-channel interference problems with channel9. The callsign with which you registered. CB RADIO homemade Dipole antenna in a loft. - YouTube In Russia and Poland, the channels are shifted 5kHz down; for example, channel30 is 27.300MHz. The current specification is simply "4watts output (AM) or 12watts output (SSB)" as measured at the antenna connector on the back of the radio. CB operators have communicated across thousands of miles and sometimes around the world. Some hobbyists continue to use the designation "11meters" to refer to the Citizens Band and adjoining frequencies. 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 prominence of CB radio grew in Britain partly due to the success of novelty songs like C.W. The other problem with shortrange CB use is propagation; during longrange "skip" conditions local signals are inaudible due to reception of multiple distant signals. The new RB249 regulations came into effect on January 1, 1978, and the last official registration date for 23channel sets was January 31, 1978. The business band requires an FCC license, and usually results in an assignment to a single frequency. They do not require a ground plane to present a near-50ohm load to the radio, and are often used on fiberglass vehicles such as snowmobiles or boats. Channel36 (or 38 for LSB) became the unofficial SSB "calling channels" for stations seeking contacts, with the subsequent conversation moving to channels3740. In the U.S., the Citizens Band is composed into 40 radio channels, each assigned by a number from 1 to 40. except channel9, which was usually colored red. This will also improve the ability to "shoot skip" in the 11 meter Citizens Band. Truck drivers still use CB, which is an effective means of obtaining information about road construction, accidents and police speed traps. The password you set for your profile. The technology has also given way to more compact CB radios with far more features afforded in older models. scantheband Member May 17, 2007 62 0 16 USA Mar 24, 2009 #2 Check out a Yaesu FT-757GX. Paging is permitted on channel1 (26.965MHz) and channel80 (26.955MHz) is the recommended call channel for Czech CB radio operators. Citizen band radio is a short distance radio communication system that operates within a selected range of forty channels. Japan's CB allocation consists of 8voice and 2radio control channels with a maximum power output of 500mW. 11DX.net 11m DX Cluster Because many people were already using 40channel radios prior to legalization, the American band plan (with AM and SSB) was adopted; a VHF band was added in 1994, along with allowing use of the Australian UHF CB channel plan at 476-477MHz On 10November 1980, the Indonesian Directorate General of Posts and Telecommunications issued another decree establishing RAPI (Radio Antar Penduduk Indonesia) as the official citizens band radio organization in Indonesia. At the beginning of the CB radio service, transmitters and receivers used vacuum tubes; solid-state transmitters were not widely available until 1965, after the introduction of RF power-transistors. For instance, channel19 shifted two bands up is 28.085MHz, which is in a Morse code / data-only part of the 10meter ham band. Frequency A recent FCC decision now allows shooting skip in the United States.[44]. Just keep in mind that, even for CB Radios, the FCC requires users to follow certain codes of conduct and equipment restrictions. This is my first antenna project in the year of 2000 at the time i was active on 'Free-Band' 11 meter with some nice 'DXing', The original design is to be found on the internet, i do not remember the URL. The General Radio Service was authorized in 1962. [18] On January 1, 1982, the American 40channel band plan was adopted. Packet radio is legal in the UK, although not widely used. Some member countries permit additional modes and frequencies; for example, Germany has 40additional channels at 26MHz for a total of 80. Frequency: Ch. 27MHz radios have the advantage of not requiring a certificate of proficiency to use,[23] however they may not be monitored by rescue organisations or larger vessels. 11 meter is often used by freebanders or CB operators using the "freeband" frequencies from between 25 MHz or 26 MHz and CB channel 1 (26.965 MHz) and CB channel 40 (27.405 MHz) and the bottom edge of the 10 meter amateur band (28.000 MHz). Breaker! Since less standardization exists in Europe, CB there is more associated with hobbyists than with truckers. Before CEPT, most member countries used a subset of the 40U.S. channels. The BIG difference between 11-meters and the Ham bands is the Calling frequency which is 27.555 Mhz Let me remind you of the 11-meter procedure: 1. I need to ask why you say "The Yaesu FT-101, with its "peculiar" (ARRL) 11-meter band position was the first radio to allow the CB'er to operate Freeband, ushering in a new style of 11-meter operation" are you suggesting that the ARRL had anything to do with Yaesu including an 11 meter position on the band switch? This page was last modified on 10 April 2023, at 15:35. - The HB9CV Ready for 'The BIG Test Run'. Members of these clubs are still active, and have also become amateur radio operators. A fullwave antenna on the 11 meter band is 36 foot long but I have never once heard of anyone using a fullwave on the 11 meter band. What the CB community generally refer to as the 11m band or freeband is considered to cover is 25 MHz to the beginning of 28 MHz although most activity happens around 26-28 MHz. In the United States, the number of users and law enforcement financing by the Federal Communications Commission mean that only the worst offenders are sanctioned, which makes legitimate operation on the citizens band unreliable. Business users (such as tow-truck operators, plumbers, and electricians) moved to the VHF and UHF business band frequencies. 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. This causes interference to the authorized low-power 1Watt DSB (1Watt AM) fishery radio service. The American radio amateur II meter allocation was formally taken away around 1958, some of the spectrum they lost became part of the new 23 channel allocated "class D 27 Mhz citizens band service", prior to that citizens band in the USA had been allocated in the 460/470 Mhz UHF band slot, starting as early as 1945 in law, and well established by 1948, that UHF allocation was eventually lost . Project #1 - 2000. In September 2021 the FCC approved the use of FM on CB radio. CB radio is not a worldwide, standardized radio service. 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. General Printable 11m Channel/Frequency Chart Foxtrot Lima [3]:174 On some newer radios, the modification may be as simple as disconnecting a jumper wire or a diode. Almost all were AM-only, although there were a few single sideband sets. Marketing, import and sale of such radios is illegal if they are distributed as anything other than Amateur Radio transceivers. [27], In Indonesia, CB radios were first introduced about 1977 when some transceivers were imported illegally from Australia, Japan and the United States. [citation needed] Many operators add a switch to change between the "zeroes" (the Russian/Polish channel assignment) and the "fives" (the international/European assignment). Until 1975,[12]:14 only channels914 and 23[a] could be used for "interstation" calls (to other licensees). The legality of shooting skip is not an issue in most other countries. Base CB antennas may be vertical for omnidirectional coverage, or directional "beam" antennas may be used to direct communications to a particular region. He then goes on to point out that 11-meter signals "can travel to the far corners of the earth. A Guide to Listening to CB Radio with an RTL-SDR Dongle In some instances, the sale or ownership of foreign-specification CB gear is not illegal but its use is. Manufacturers report an increase in sales, while social media sites like Youtube show a growing popularity in CB radio content, mainly as a hobby. Drivers (especially commercial truckers) used CB radios to locate service stations with better supplies of fuel, to notify other drivers of speed traps, and to organize blockades and convoys in a 1974 strike protesting the new speed limit and other trucking regulations. I'm 37 years old and have own a lot of deffrent ground plan antennas. Frequency selection resembles that of modified American CBs more than any foreign frequency plan. Commonly there is 'tree' major types of different CB-Radio's Type 1: Uses channels to decide operating frequency. While a SSB radio has three possible "modes" (AM, LSB, USB) it can operate in, operation is still limited to the same 40channels. Since the price of CB was dropping and VHF Marine Band was still expensive, many boaters installed CB radios. Standard legal transceivers (UK FM + EU AM and SSB) Frequencies for Digital PMR 446 are from 446.103125 to 446.196875MHz with 6.25kHz channel spacing in 4FSK mode and a power output of 0.5watt. 27.415 MHz LSB - US calling/working frequencies (channels +5 kHz, 27.420 MHz, 27.425 MHz, 27.430 MHz, and so on, 27.428 MHz USB - Militia Patriot SSB CB 11m tactical - USB mode 27.428 USB, 27.455 MHz USB - Latin American calling frequency (see also 26.555 MHz LSB) - Spanish language, 27.465 MHz AM - Italian high power channel - canal 45 - similar to 27.025 MHz or 26.705/26.715 MHz in the Americas, 27.500 MHz LSB - Caribbean and Latin American calling/working frequency (see also: 26.225 MHz USB, 26.555 MHz LSB), 27.500 MHz USB - Caribbean and Latin American calling/working frequency, 27.500 MHz AM or CW - unofficial 11 meter, 27.515 MHz LSB - Jamaica and Caribbean calling/DX frequency "The Knight Patrol", 27.555 MHz USB - international 11 meter DX calling frequency, 27.580 MHz USB - Knight Patrol club frequency (see also: 27.515 LSB), 27.605 MHz AM - popular out-of-band trucker channel USA, 27.615 MHz AM - popular out-of-band trucker channel USA, 27.625 MHz AM - popular out-of-band trucker channel USA, 27.635 MHz USB - digital modes found here in Europe (ROS, PSK31), 27.635 MHz AM - CB channel 19 "up one band" - truckers are often heard here (see also 26.735 MHz, 28.085 MHz, 25.635 MHz, 26.285 MHz), 27.665 MHz USB - Spanish language common frequencies + 5 kHz USB/LSB to 27.705 MHz or higher, 27.695 MHz USB - Spanish language, South America popular (also Brazil) - USB and LSB, 27.700 MHz USB - international 11 meter SSTV frequency, 27.735 MHz USB - international 11 meter SSTV frequency (alternate, also digital SSTV), 27.765 MHz FM - Deutsche Welle, German speaking stations out of band freeband, 27.765 MHz USB - Deutsche Welle SSB freebanders, 27.775 MHz AM - sometimes AM signals are heard on this frequency and higher during band openings, often taxi dispatchers, etc, 25330 kHz to 25550 kHz or 25.330 MHz to 25.550 MHz, 26480 kHz to 26950 kHz or 26.480 MHz to 26.950 MHz, 27540 kHz to 28000 kHz or 27.540 MHz to 28.000 MHz, 29890 kHz to 29910 kHz or 29.890 MHz to 29.910 MHz, 30000 kHz to 30560 kHz or 30.000 MHz to 30.560 MHz, 24890 kHz to 24990 kHz or 24.890 MHz to 24.990 MHz, 25005 kHz to 25010 kHz or 25.005 MHz to 25.210 MHz, 25210 kHz to 25330 kHz or 25.210 MHz to 25.330 MHz, 26175 kHz to 26480 kHz or 26.175 MHz to 26.480 MHz, 26950 kHz to 27540 kHz or 26.950 MHz to 27.540 MHz, 28000 kHz to 29700 kHz or 28.000 MHz to 29.700 MHz, 29700 kHz to 29890 kHz or 29.700 MHz to 29.890 MHz, 29910 kHz to 30000 kHz or 29.910 MHz to 30.000 MHz. Do you like LF11? S9s successor was Popular Communications, which had the same editor under a different publisher beginning in 1982. [6] There are several other classes of personal radio services for specialized purposes (such as remote control devices). Legal operation in one country may be illegal in another; for example, in the UK until June2014 only 80FM channels were legal. The club used the prefix "GL" (for Gippsland), since "CB" could not be used. [f] Internet gateways and radio repeaters are allowed on channels 18[27.175MHz] and 23[27.255MHz]. The Multi-Use Radio Service is another two-way radio service in the VHF high band. To achieve this effect, the antennas must be separated by about eight feet, only practical on large trucks. 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. Citizen's Band (CB) 26 - 27 MHz (HF), 11 Meter Band, 40 Channels. Users on a channel must take turns talking. [c] It was common for a town to adopt an inter-station channel as its "home" channel. Other Australian cities which became CB radio "hotspots" were Seymour, Benalla, Holbrook and Gundagai, all located on the busy Hume Highway between Melbourne and Sydney. Although this band belongs to the same HF as the 10m band, it is often used for FM broadcasting instead of the SSB communication similar to the 10m band. Moxon Antennas Guide to 11m DX | Tango Mike 11m Band DX Group The United Kingdom has an additional 40channels between 27.60125 and 27.99125MHz, also making 80channels in total. ClassB radios had simpler technical requirements, and were limited to a smaller frequency range. This is roughly 9feet (2.7m) tall; it is mounted low on the vehicle body, and often has a spring-and-ball mount to enhance its flexibility when scraping or striking overhead objects. 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. Free band 11 Meter Frequencies and Bands - iamdefiant.co.uk
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