The monitors you have will reproduce whatever standard NTSC signal you feed it; ie;dvd, vcr, off-air or satellite. The feed will require a tuner to provide that compatability. If you live in a metro area it will be harder to maintain a strong off-air signel due to all the ground interference/buildings, trees and any other structure. There is an in-motion sat. system made for SUVs that is similar to the units used on RVs. Jay
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