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The 10-meter band was allocated on a worldwide basis by the International Radiotelegraph Conference in Washington, DC, on 4 October 1927. [2] Its frequency allocation was then 28-30 MHz. A 300 kHz segment, from 29.700–30.000 MHz, was removed from the amateur radio allocation in 1947 by the International Radio Conference of Atlantic City.
Amateur radio has an allocation starting at 28.000 MHz in the 10-meter band. [19] Below the Citizen's Band, the military has the frequencies from 26.480 to 26.960 MHz. The Civil Air Patrol has 26.620 MHz, though it now uses mostly VHF frequencies. [20]
The World Administrative Radio Conference (WARC) bands are three portions of the shortwave radio spectrum used by licensed and/or certified amateur radio operators. They consist of 30 meters (10.1–10.15 MHz), 17 meters (18.068–18.168 MHz), and 12 meters (24.89–24.99 MHz).
In 2004 the FCC developed a new band plan where narrowband operations are provided in 806–816 and 851–861 MHz ranges while wideband operations are allowed in 817–824 MHz and 862–869 MHz separated from narrowband services by a 1 MHz wide guard band. [6] The wideband services part of the SMR band was called ESMR (Enhanced SMR).
Several countries in ITU Region 1 have access to frequencies in the 70 MHz region, called the 4-meter band. The band shares many propagation characteristics with 6 meters. The preferred location for beacons is 70.000–70.090 MHz; [5] however, in countries where this segment is not allocated to Amateur Radio, beacons may operate elsewhere in ...
In 1947, the uppermost 300 kHz segment of the world allocation of the 10 meter band from 29.700 MHz to 30.000 MHz was taken away from amateur radio. During the 1950s, hams helped pioneer the use of single-sideband modulation for HF voice communication. [18] In 1961 the first orbital amateur radio satellite was launched.
AM expanded band; Apex (radio band) ... Geneva Frequency Plan of 1975; GSM frequency bands; I. List of amateur radio frequency bands in India; ISM radio band; K. KDR ...
Pair one up with a 2 meter transverter for $300, you now have an SSB 10 meter and 2 meter dual band rig for $400, often with better performance characteristics (but far less features) than a $1,000 off-the-shelf HF/6/2/440 rig may exhibit.