📺🟥🟩🟦⬜️⬛️

#test pattern #color bars #off air #no signal #smpte bars #television test card #tv calibration

🎙️➡️🤫

#off air #private conversation #studio break #speaking privately #backstage talk #mic aside

⬛️📵

#signal lost #dead zone #communication blackout #off air #screen black