Mariachi rural settings, notably in charro outfits. This use of the charro outfit was repeated with urban mariachi in the 1920s. The Charro outfit was also used in the national "Orquestra Típica Mexicana" ("Mexican Typical Orchestra"), organized in 1884 by Carlo Curti, and touring the United States and Mexico as part of a presentation of nationalism for the Mexican president Porfirio Diaz. Curti's "Orquestra Típica Mexicana" has been called the "predecessor of the Mariachi." After the Mexican Revolution, many haciendas had to let workers go, including mariachis. Groups began to wander and play for a fee, which obliged them to incorporate
WARC bands codified in official recommendations, such as the IARU Region 1 HF Manager's Handbook, which states: Contest activity shall not take place on the 10, 18 and 24 MHz bands. Non-contesting radio amateurs are recommended to use the contest-free HF bands (30, 17 and 12m) during the largest international contests. (DV05_C4_Rev_07) Canada is part of region 2 and as such is subject to the IARU band plan. 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