In conventional television, the signal is transmitted by land through a network of repeaters that covers the national territory. If the program is broadcast, for example, from Madrid , the signal is sent to the Torre España building and from there it is relayed to the different Regional Centers. Thus, a viewer located in the capital will see the images a few fractions of a second before another located in Galicia or the Canary Islands. The reason for the delay is because the signal passes through several repeaters that amplify it and modify its frequency. In addition, the image signal is treated in each jump, to recompose it and avoid its degradation. These operations are not instantaneous as they take several milliseconds to complete. To this delay in transmission must be added the time that the television spends in decoding the TV signal, which is not the same in all receivers.
Do the images reach all televisions at the same time?
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