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"This makes it possible to use the same TV channels for cable that are also used for broadcast over the air" -- can someone explain what this means?
by vinhboy 15y ago
"This makes it possible to use the same TV channels for cable that are also used for broadcast over the air" -- can someone explain what this means?
- elwin 15y agoI think it means that the cable carries an analog TV signal at the same frequencies used by over-the-air broadcasts. If the cable wasn't shielded, it would act like an antenna and pick up radio-broadcast signals. That would cause interference with the cable signal. But since the shielding electromagnetically isolates the cable, cables and over-the-air broadcasting can use the same frequencies.