The 10 meter amateur radio band is the highest of the High Frequency or "HF" bands. It is a large band, stretching from 28.000 MHz to 29.700 MHz. Ham radio station with modern solid-state transceiver featuring LCD display and DSP capabilities Ham radio station with vintage vacuum tube gear featuring separate transmitter, receiver and power supply Amateur radio, often called Ham radio, is a hobby and public service enjoyed by about 6 million people throughout the world. ... High frequency (HF) radio frequencies are between 3 and 30 MHz. ... A megahertz (MHz) is one million (106) hertz, a measure of frequency. ...

The History of 10 Meters

The Amateur Radio 10 Meter Band was created in 1928 after the International Radiotelegraph Conference was held in Washington, DC, USA. Year 1928 (MCMXXVIII) was a leap year starting on Sunday (link will display full calendar). ...

Ham Radio lost the 300 kHz segment from 29.700 MHz to 30.000 MHz in 1947. Year 1947 (MCMXLVII) was a common year starting on Wednesday (the link is to a full 1947 calendar). ...

Launched in 1970 on a NASA flight OSCAR-5 was the first OSCAR to transmit on the Amateur 10 meter band and was built at University of Melbourne, Australia. 1970 (MCMLXX) was a common year starting on Thursday (the link is to a full 1970 calendar). ... The National Aeronautics and Space Administration (NASA) is an agency of the United States Government, responsible for that nations public space program. ... OSCAR is an acronym for Orbital Satellite Carrying Amateur Radio. ...

In the late 1970s with the impending American FCC ban of the sale of older 23 channel Citizens' band radio equipment that did not meet the more stringent type acceptance of the newer 40 channel units meant that a surplus of 23 channel CB gear was on the market. This was a windfall for Amateur Radio enthusiasts allowing them access to fairly inexpensive radios which could easily be modified for use in the 10 meter band. The 1970s decade refers to the years from 1970 to 1979, inclusive. ... A typical CB base station. ...

American Novice and Technician class licensees were granted CW and SSB segments on the 10 Meter Band in 1987 A continuous wave (CW) is an electromagnetic wave of constant amplitude and frequency. ... Single-sideband modulation (SSB) is a refinement of the technique of amplitude modulation designed to be more efficient in its use of electrical power and bandwidth. ... 1987 (MCMLXXXVII) was a common year starting on Thursday of the Gregorian calendar. ...

As of December 19th, 2006 Morse code was dropped from testing, and now Technician Plus and Technician class licensees can use the band from 28.100MHz to 28.300MHz for CW/RTTY/DATA and 28.300MHz to 28.500MHz for CW and SSB PHONE.

Operating on 10 Meters

A mobile 10-Meter radio

Being a very wide band in HF terms, many different transmission modes can be found on 10 meters. Morse Code and other Narrowband modes found toward the bottom portion of the band, Single-sideband modulation (SSB) from 28.300 MHz and above, Wideband modes such as Amplitude Modulation (AM) and Frequency Modulation (FM) are found near the top portion of the band. Image File history File linksMetadata Download high-resolution version (858x530, 274 KB) Other versions Originally from en. ... Image File history File linksMetadata Download high-resolution version (858x530, 274 KB) Other versions Originally from en. ... 1922 Chart of the Morse Code Letters and Numerals Morse code is a method for transmitting information, using standardized sequences of short and long marks or pulses — commonly known as dots and dashes — for the letters, numerals, punctuation and special characters of a message. ... Narrowband (narrow bandwidth) refers to a signal which occupies only a small amount of space on the radio spectrum -- the opposite of broadband or wideband. ... Single-sideband modulation (SSB) is a refinement of the technique of amplitude modulation designed to be more efficient in its use of electrical power and bandwidth. ... Wideband is a relative term used to describe a wide range of frequencies in a spectrum. ... [[Amplitude modulation]] (AM) is a technique used in electronic communication, most commonly for transmitting information via a carrier wave wirelessly. ... Frequency modulation (FM) is a form of modulation which represents information as variations in the instantaneous frequency of a carrier wave. ...

Propagation Characteristics

Due to its unique spot in the spectrum, 10 meters can be fascinating, if not occasionally challenging, to work. At peak times of the solar cycle and sunspots appear on the Sun's surface, 10 meters can be alive with extremely long-distance signals, refracting from the F2 layer in the ionosphere. Primarily a daytime band, 10 meters will come alive during high solar periods not long after sunrise, and often remain "open" until after sunset. It has been suggested that this article or section be merged with Schwabe-Wolf cycle. ... 400 year sunspot history A sunspot is a region on the Suns surface (photosphere) that is marked by a lower temperature than its surroundings, and intense magnetic activity. ...

Long distance opportunities via F2 seem to follow the Sun across the globe. In North America, for instance, F2 might bring Europe and Western Asia in the morning, The Americas during midday, and perhaps Eastern Asia in the afternoon. The Sun is the star at the centre of the Solar System. ... World map showing North America A satellite composite image of North America. ... World map showing Europe A satellite composite image of Europe Europe is one of the seven traditional continents of the Earth. ... World map showing the location of Asia. ...

Even in times of solar minimum, when F2 is rarely available, 10 meters still has some long distance possibilities. Sporadic E propagation can bring in signals from a few hundred to a few thousand miles away. Sporadic E on 10 meters is mainly a seasonal event, with Summer being prime time for the mode. A shorter, less-intense period is seen mid-Winter, often between Christmas and New Year. Other, off-peak openings may be seen almost anytime. Even in solar minimum, F2 openings often occur on transequatorial paths, for example between Europe and Southern Africa or between Pacific North America and the Eastern Pacific islands. Solar minimum is the period of least solar activity in the solar cycle of the sun. ... Sporadic E propagation is a relatively rare form of propagation where a radio wave bounces off a sporadic E cloud, notated as Es in the E layer region of the ionosphere. ... Categories: Africa geography stubs | Southern Africa ... World map showing North America A satellite composite image of North America. ...

The Sub-Bands

Although 10 meters has a worldwide amateur radio allocation, in some countries the use of portions of 10 meters is allocated by the government by license class, by signal mode and/or signal bandwidth. Beyond these regulations there is also a general voluntary band plan adhered to by amateurs throughout the world.

US Allocations

Key

A continuous wave (CW) is an electromagnetic wave of constant amplitude and frequency. ... RadioTeleType (RTTY) is a telecommunications system consisting of two teleprinters linked by a radio link. ... A continuous wave (CW) is an electromagnetic wave of constant amplitude and frequency. ... A continuous wave (CW) is an electromagnetic wave of constant amplitude and frequency. ... Single-sideband modulation (SSB) is a refinement of the technique of amplitude modulation designed to be more efficient in its use of electrical power and bandwidth. ...

The Novice Sub-Bands

Named for the segment of 10 meters granted for use to old American Novice Class Amateur Radio license holders the Novice sub-bands consist of two frequency ranges; one for CW and Data operation the other for SSB phone operation.

The Novice CW Portion

28.000 MHz - 28.300 MHz Is a very active part of 10 meters for CW operation.

The Novice Phone Portion

28.300 MHz - 28.500 MHz is probably the most active part of the 10 meter band. Operation in this segment is almost exclusively SSB world wide.

The Beacon Sub-Bands

Because the propagation on 10 meters can vary drastically on 10 meters throughout the day, propagation beacons are very important to gauge the current conditions of the band. With some differences in each ITU Regions and also from country to country, the beacon sub-bands fall between 28.100 MHz and 28.300 MHz. ITU Region 1 is generally 28.190 MHz - 28.225 MHz and ITU Region 2 is generally 28.200 MHz - 28.300 MHz. The International Telecommunication Union (ITU), in its International Radio Regulations, divides the world into three ITU regions for the purposes of managing the global radio spectrum. ...

The AM Sub-Band

From 29.000 MHz to 29.200 MHz. Common practice was to use the band in 10 kHz steps. Originally 29.010, 29.020, 29.030,... etc. This has not been the case since the 1970s influx of surplus 23 channel CB equipment. The surplus equipment would land in 10 kHz steps on the 5 kHz step such as: 29.015, 29.025, 29.035,... etc. Users of the surplus equipment also inherited those radio's odd channel spacing which on the CB band skipped channels that there were meant for remote control operations.

The Satellite Sub-Band

From 29.300 MHz to 29.510 MHz the satellite sub band allows amateur radio operaters to communicate with orbiting OSCARs. Other uses of this frequency range are strongly discouraged. OSCAR is an acronym for Orbital Satellite Carrying Amateur Radio. ...

Satellite Operation on 10 Meters

Many OSCARs have either an uplink or a downlink in the 29 MHz range. Information about particular satellites and operational modes is available from AMSAT.

The FM Sub-Band

From 29.510 MHz to 29.700, The FM sub-band is usually channelized into repeater and simplex frequencies. The channels are commonly grouped into repeater inputs, simplex, and repeater output frequencies. An Icom Radio Repeater. ... In geometry, a simplex (plural: simplices) or n-simplex is an n-dimensional analogue of a triangle. ...

Repeater Input Channels: 29.520, 29.530, 29.540, 29.550, 29.560, 29.570, 29.580 and 29.590 MHz.

Simplex Channels: 29.600 and 29.610 MHz

Repeater Output Channels: 29.620 29.630, 29.640, 29.650, 29.660, 29.670, 29.680 and 29.690 MHz.

Repeater Operation on 10 Meters

Common practice for 10 meter repeaters is to use a 100 kHz negative offset for repeater operation. Due to the very few available repeater channels "odd-splits" (Offsets differing from 100 kHz) and non-standard frequencies are not uncommon. Because 10 meters can frequently open up to propagate globally most all 10 meter repeters use a CTCSS sub-audible access tone. In telecommunications, squelch is a circuit function that acts to suppress the audio (or video) output of a receiver. ...

Aficionados

Due to its unique nature, 10 meters has a large following of hobbyists who center most of their time on this frequency band. The major group of enthusiasts is Ten-Ten [1] which has been organized since the 1960s. The 1960s decade refers to the years from January 1, 1960 to December 31, 1969, inclusive. ...

Mediumwave radio transmissions (sometimes called Medium frequency or MF) are those between the frequencies of 300 kHz and 3000 kHz. ... High frequency (HF) radio frequencies are between 3 and 30 MHz. ... Ham radio station with modern solid-state transceiver featuring LCD display and DSP capabilities Ham radio station with vintage vacuum tube gear featuring separate transmitter, receiver and power supply Amateur radio, often called Ham radio, is a hobby and public service enjoyed by about 6 million people throughout the world. ... A band is a small section of the spectrum of radio communication frequencies, in which channels are usually used or set aside for the same purpose. ... Monument in Bern, Switzerland. ... The International Telecommunication Union (ITU), in its International Radio Regulations, divides the world into three ITU regions for the purposes of managing the global radio spectrum. ... At just above the AM Broadcast band, 160 meters is the lowest radio frequency band alloted for use by Amateur Radio operators. ... This article needs a complete rewrite for the reasons listed on the talk page. ... Shortwave bands are frequency allocations for use within the high frequency radio spectrum. ... This article needs a complete rewrite for the reasons listed on the talk page. ... This article needs a complete rewrite for the reasons listed on the talk page. ... This article needs a complete rewrite for the reasons listed on the talk page. ... Shortwave bands are frequency allocations for use within the high frequency radio spectrum. ... Shortwave bands are frequency allocations for use within the high frequency radio spectrum. ... Shortwave bands are frequency allocations for use within the high frequency radio spectrum. ...