Tuning Antenna
In the days before digital signals, the internet, and cable, televisions and radios needed to be tuned using long metal wires that poked out of the top. If someone walked through the room at the wrong time, they could interrupt the signal and the television screen or radio output might start to crackle or display static. Some people kept the window open while listening to the radio, in a mistaken effort to help the signal reach the antenna.