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	mads.xsd"><authority><topic authority="http://www.serbi.ula.ve/tematres/vocab/">RADIO</topic></authority><related type="narrower"><topic>Codigo Morse</topic></related><related type="narrower"><topic>DIAFONIA</topic></related><related type="narrower"><topic>ELECTROACUSTICA</topic></related><related type="narrower"><topic>MODULACION (ELECTRONICA)</topic></related><related type="narrower"><topic>OSCILADORES ELECTRICOS</topic></related><related type="narrower"><topic>RADAR</topic></related><related type="narrower"><topic>RADIOTELEGRAFIA</topic></related><related type="narrower"><topic>Reproducción del sonido.</topic></related><related type="broader"><topic>TRAFICO DE TELECOMUNICACIONES</topic></related><related type="broader"><topic>INGENIERÍA ELÉCTRICA</topic></related><related type="broader"><topic>TELECOMUNICACIONES</topic></related><variant type="other"><topic>Radiotelefonía</topic></variant><variant type="other"><topic>Telefonía sin hilos</topic></variant></mads>