And mathematicians and students of mathematics know that the radical sign-√ or √⁻-is used when you're finding the square root of a number or formula. In medicine, radical surgery is surgery that's designed to remove the root of a disease. And linguists know that a verb's radical form is its root form. None of this will surprise the botanists: they know that radical leaves grow from the base of a stem or from a rootlike stem, and radical tubers grow from a plant's root. Radical was first an adjective, borrowed in the 14th century from the Late Latin radicalis, itself from Latin radic-, radix, meaning "root." And the earliest uses of radical are indeed all about literal roots, hinging on the meaning "of, relating to, or proceeding from a root."Ī tree's roots should probably not "hang loose," however. The origin of radical isn't at all radical, in the "very different from the usual or traditional" sense of the word. Just how did radical come to have so many, uh, radically different uses? And just what is its original use? You will not be surprised to know that we have some answers for you. If surfing slang is your thing, it's probably some beach bum saying something like "Radical, dude."Īh, English: yet again, using the same word to do so many jobs. If math is your thing, you might think of square roots. When you think of the word radical, what comes to mind? If politics is your thing, it might be an image of a person far to your ideological right or left. Now radical is associated with extreme change and deviation from the norm. Later, radical was used more figuratively to mean "fundamental" and examples like "radical reform" referred to changing the very root of the system. Spratly Is (ITU Zone 50 CQ Zone 26) [lat 8.8 long 111.The meaning of radical for many centuries was related to its origins radicalis meaning "root." Thus, until recently, radical referred to the roots of words, the roots of illness, or even square roots. Sovereign Military Order of Malta (ITU Zone 28 CQ Zone 15) ġB Northern Cyprus (In the past) (ITU Zone 39 CQ Zone 20) The 1AA-1ZZ Callsign Block has not been allocated by the ITU. This applies to all radio amateurs, aircraft, ships, broadcast, commercial stations etc. The ITU allocates a block or blocks of prefixes to each country, and all callsigns must begin with the specified prefix. Radio callsigns for the world are set by the ITU – the UN Agency which coordinates all radio activity.
RADI PREFIX SERIES
Between radio communication conferences, the Secretary-General is authorized to deal with questions relating to changes in the allocation of series of call signs, on a provisional basis, and subject to confirmation. ** Provisional allocation in accordance with No. * Series allocated to an international organization.
Click on the underlined prefix to go to the primary. Secondary Prefix Assignments are in BLUE. Primary Prefix is in RED-the mostly commonly used and most frequently cited in country lists. Hint put a space before and after the prefix you are searching for. You Can Use CNTRL F Or Your Browser FIND Command To Search The Page Locations given are a general guide forĭXCC is ARRL Copyrighted. Maps are linked here for geographical reference.īased on several sources Airport Codes, Capital City Lists, the CIA Factīook, and various Atlases.
Use the prefix list below to find primary, secondary, deleted and changed prefixes. Note 1: Using prefix maps may not find the desired prefix as many maps only show primary prefixes.