El 1 de enero de 2013, todo titular de licencia de radio móvil terrestre bajo la Parte 90 que operara entre 150 y 174 MHz y entre 421 y 512 MHz debía estar funcionando con canales de 12.5 kHz o con una eficiencia equivalente. La norma se redactó como una [...]
On January 1, 2013, every Part 90 land mobile licensee operating between 150 and 174 MHz and between 421 and 512 MHz had to be running 12.5 kHz channels or equivalent efficiency. The rule was written as a spectrum housekeeping measure and it read like one, three lines about bandwidth [...]
Entre el 14 y el 16 de diciembre de 1999 el frente montañoso que se levanta sobre la costa central de Venezuela liberó miles de deslizamientos superficiales que se concentraron en flujos de escombros (debris flows) y corrieron sobre los abanicos aluviales (alluvial fans) donde vivía la mayor... [...]
Between 14 and 16 December 1999 the mountain front above Venezuela's central coast shed thousands of shallow landslides that gathered into debris flows and ran out onto the alluvial fans where most of Vargas state lived. Neighborhoods were buried under meters of boulders and sand, the coastal... [...]
A la gente nueva en el mundo de la radio se le suele explicar Project 25 como un formato de voz digital, lo cual lo describe muy por debajo de lo que realmente es. El proyecto comenzó alrededor de 1989 como una defensa frente a las prácticas de adquisición, redactada [...]
Project 25 is usually explained to new radio people as a digital voice format, which undersells it badly. It began around 1989 as a procurement defense, written by public safety users who had watched the first generation of trunked radio lock them into single vendors and who could see digital... [...]
Hacia las tres de la madrugada del 4 de febrero de 1976, un largo tramo de la falla de Motagua se rompió bajo Guatemala y la sacudida alcanzó a pueblos del altiplano donde la mayoría de la población dormía bajo pesados techos de teja sostenidos por muros de adobe sin [...]
At about three in the morning on 4 February 1976, a long stretch of the Motagua fault broke under Guatemala and the shaking reached highland towns where most people were asleep under heavy tile roofs carried on unreinforced adobe walls. The death toll ran to roughly twenty-three thousand, and it... [...]
Cada pocos meses a un gestor de emergencias le preguntan sobre un accidente de transporte, ya sea un periodista, un comisionado del condado o un bombero que quiere saber qué pasó en realidad. La National Transportation Safety Board (NTSB) publica una cantidad enorme de material sobre casos... [...]
Every few months an emergency manager gets asked about a transportation accident, either by a reporter, a county commissioner or a firefighter who wants to know what really happened. The National Transportation Safety Board publishes an enormous amount of material on closed cases, and almost... [...]
