JayArr
Well-known member
There was a standard many years ago where 12V was injected into the coax with the signal to power portable TVs. Take a voltmeter and check the coax connector to see. The 12VDC didn't affect the signal from the antenna and a special TV had a circuit to separate the DC from the signal.
It wasn't terribly popular and never caught on but I did repair a few dozen TVs like that back in my CRT repairing days.
It wasn't terribly popular and never caught on but I did repair a few dozen TVs like that back in my CRT repairing days.