The loop is for a satellite receiver. Most likely your Cable in is also the Sat in. When connected to park cable the loop allows the signal to reach the TV. Using a satellite receiver, you remove the loop, and one port is IN to receiver and the other is OUT to TV.
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.