No need to go into the depper science behind these antennae boosters, suffice to say that without it activated (so the green light is on) you will not get any TV signals for watching when you are using the roof antennae. On the other side, turn it off if you are connected to cable service provided at various campgrounds. Remember to also program the actual television to scan for "air" or "cable" source for your programming pleasure, found in the televison menu options.
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Ken and Terry
2018 Sunseeker 2430S-CD, nicely modified and carried by a 2017 Ford E450 Sport
Former Georgetown 330TS owner for 10 years with more mods than I can count, pushed by our 2017 GMC Terrain
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