The best replacement for signal is noise.

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Your alternative for signal is not listed? Suggest!
Speaking about signal, one probably shouldn't forget about hdmi cable.

Other search terms related to signal and their ratings are:
★★★★★ hdmi cable
★★★★ ee
★★★ modulation
You have in mind a companion for signal and it is not yet here? Propose!



Google Trends

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signal
noise
sigaction