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Vintage amateur radio is a subset of amateur radio hobby where enthusiasts collect, restore, preserve, build, and operate amateur radio equipment from bygone years, such as those using vacuum tube technology.
ARRL – American Radio Relay league. DX News Ham Radio; World Radio Map; The DXZone.com A web site dedicated to the DXing; DX Forum Discussion of long-range radio reception, equipment; DXing.Today Archived 2018-01-06 at the Wayback Machine Free weekly DX News bulletin by VK2DX; Charlie Tango DX Group UK CTDX is the largest DXing group in the UK
Repeater frequency sets are known as "repeater pairs", and in the ham radio community most follow ad hoc standards for the difference between the two frequencies, commonly called the offset. In the USA two-meter band, the standard offset is 600 kHz (0.6 MHz), but sometimes unusual offsets, referred to as oddball splits, are used. The actual ...
VOACAP simulation of propagation against distance, comparing effective radiations of 1 watt (top) and 99 Watts (bottom).. The practice of operating with low power was popularized as early as 1924, with a variety of reports, editorials and articles published in U.S. amateur radio magazines and journals that encouraged amateurs to lower power output, both for purposes of experimentation, and for ...
The 20-meter or 14-MHz amateur radio band is a portion of the shortwave radio spectrum, comprising frequencies stretching from 14.000 MHz to 14.350 MHz. [1] The 20-meter band is widely considered among the best for long-distance communication ( DXing ), and is one of the most popular—and crowded—during contests . [ 2 ]
The 15-meter band (also called the 21-MHz band or 15 meters) is an amateur radio frequency band spanning the shortwave spectrum from 21 to 21.45 MHz. The band is suitable for amateur long-distance communications, and such use is permitted in nearly all countries.
The 40-meter or 7-MHz band is an amateur radio frequency band, spanning 7.000-7.300 MHz in ITU Region 2, and 7.000-7.200 MHz in Regions 1 & 3. It is allocated to radio amateurs worldwide on a primary basis; however, only 7.000-7.200 MHz is exclusively allocated to amateur radio worldwide.
Operating amateur radio from a vehicle is known as 'Mobile', as is signified by the suffix '/M' on the call. A popular pastime for portable operation is the Summits on the Air programme, part of which involves portable operation from a worldwide list of over 73,500 summits.