We recommend the 15 Minute Timer website, as this website offers an assortment of timers to choose from, and they are all user-friendly. Whether it's for cooking or simply being more productive, having an easy-to-use timer can be useful. You probably find yourself wishing you had a timer that you could use as a time monitor. This website helps those who wish to record their time, or those who want to hone their time management abilities. You can track your progress as you countdown. These allocations may only apply to a group of countries.This 15 minute timer is an online tool that allows you to create a timer that counts down from 15 minutes to 0 minutes. This includes a currently active footnote allocation mentioned in the ITU's Table of Frequency Allocations. This is not mentioned in the ITU's Table of Frequency Allocations, but many individual administrations have commonly adopted this allocation under "Article 4.4". These are commonly called the " WARC bands". HF allocation created at the 1979 World Administrative Radio Conference. For simplicity, only common allocations found internationally are listed. All allocations are subject to variation by country. ![]() Others have declined to regulate frequencies above 300 GHz. Some administrations have authorized spectrum for amateur use in this region Click the 15 Meter button at the bottom of the page "UK Amateur Radio Bandplans Band Plans".Archived from the original on 3 August 2005. Archived from the original on 7 September 2005. ^ Canadian 0-30 MHz Band Plan accessed 1 December 2015.Archived from the original (PDF) on 10 July 2012. ^ "Radio Regulations Annexed To The International Telecommunication Convention (Atlantic City, 1947)" (PDF).= CW, narrow band digital ( <= 500 Hz ), wide band digital Radio Amateurs of Canada offers the bandplan below as a recommendation for use by radio amateurs in that country but it does not have the force of law and should only be considered a suggestion or guideline. = CW only (US Novice/Technician: 200 W PEP maximum TPO)Ĭanada is part of region 2 and as such is subject to the IARU band plan. = CW, RTTY and data (US: < 1 kHz bandwidth) Frequency allocation United States Megahertz The 15-meter band opened to amateurs for CW operation only in the United States on May 1, 1952, and telephony operations were authorized above 21.25 MHz and Novice CW operations between 21.100 and 21.250 MHz on March 28, 1953. The 15-meter band was designated by the 1947 International Radio Conference of Atlantic City in part to compensate for the loss of the 160-meter band to amateurs by the introduction of LORAN during World War II. The 15-meter wavelength is harmonically related to that of the 40-meter band, so it is often possible to use an antenna designed for 40 meters. ![]() īecause 15-meter waves propagate primarily via reflection off of the F-2 layer of the ionosphere, the band is most useful for intercontinental communication during daylight hours, especially in years close to solar maxima, but the band permits long-distance without high-power station equipment outside such ideal windows. The band is suitable for amateur long-distance communications, and such use is permitted in nearly all countries. ![]() 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. ( December 2010) ( Learn how and when to remove this template message) You may improve this article, discuss the issue on the talk page, or create a new article, as appropriate. The examples and perspective in this article deal primarily with the United States and do not represent a worldwide view of the subject.
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