Search results
Results From The WOW.Com Content Network
Amateur First Grade required an essay-type examination and five (later ten) words per minute code examination before a Radio Inspector at one of the Department's field offices. This class of license was renamed Amateur Class in 1927 and then Amateur First Class in 1932. Amateur Radio licensing in the United States began in mid-December 1912.
Guglielmo Giovanni Maria Marconi, 1st Marquis of Marconi FRSA (Italian: [ɡuʎˈʎɛlmo marˈkoːni]; 25 April 1874 – 20 July 1937) was an Italian inventor and electrical engineer, known for his creation of a practical radio wave–based wireless telegraph system.
CBC Music Top 20, formerly Radio 2 Top 20, is a Canadian radio record chart program, which airs across Canada on the CBC Music network. Hosted by Grant Lawrence , the show counts down the week's top songs played on the network's daily adult album alternative programs Mornings and Drive , as determined by a mix of Canadian record sales and ...
Wide FM, 20.0 kHz width, ±5 kHz deviation, still widely used for amateur radio, NOAA weather radio, marine, and aviation users and land mobile users below 50 MHz 11K2 F3E Narrow FM, 11.25 kHz bandwidth, ±2.5 kHz deviation – In the United States, all Part 90 Land Mobile Radio Service (LMRS) users operating above 50 MHz were required to ...
Code Switch is a podcast from National Public Radio , and an online outlet covering race and culture. Code Switch began in 2013 as a blog , and a series of stories contributed to NPR radio programs. The Code Switch podcast launched in 2016, hosted by Gene Demby and Shereen Marisol Meraji .
German code breaking in World War II achieved some notable successes cracking British naval ciphers until well into the fourth year of the war, [1] using the extensive German radio intelligence operations during World War II. Cryptanalysis also suffered from a problem typical of the German armed forces of the time: numerous branches and ...
There are at least three sets of Z codes. 1. One set of codes was originally developed by Cable & Wireless Ltd. (the Cable & Wireless Service Z code) for commercial communications in the early days of wire and radio communications. The old C&W Z codes are not widely used today. 2. APCO [clarification needed] also developed a system of Z codes. [1]
Japanese naval codes. The vulnerability of Japanese naval codes and ciphers was crucial to the conduct of World War II, and had an important influence on foreign relations between Japan and the west in the years leading up to the war as well. Every Japanese code was eventually broken, and the intelligence gathered made possible such operations ...