1. A complete loss or interruption of electronic signal transmission, typically affecting telecommunications, radio, television, or wireless networks
The storm caused a signal blackout across the entire region.
A tempestade causou um apagão de sinal em toda a região.
2. A period during which communication signals are intentionally or unintentionally blocked or unavailable
During the space mission, there was a brief signal blackout as the spacecraft entered the atmosphere.
Durante a missão espacial, houve um breve apagão de sinal quando a nave entrou na atmosfera.
3. Loss of connectivity or reception in telecommunications systems
Mobile users experienced a signal blackout in downtown areas.
Os usuários de celular experimentaram um apagão de sinal nas áreas do centro.