What is the maximum roll for the Antenna Mast Group (AMG)?

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Multiple Choice

What is the maximum roll for the Antenna Mast Group (AMG)?

The key idea is that the Antenna Mast Group is kept nearly level to protect antenna pointing accuracy and prevent excess mechanical stress. The roll tolerance is the tight one: only 0.5 degrees. Even a small twist around the mast’s forward-back axis can misalign the antenna and degrade performance, so the spec imposes a very small roll limit. The cross-roll tolerance is more forgiving, up to 10 degrees. This axis represents tilt in a different plane and has less impact on the antenna’s performance or on structural loads, so a larger allowance is acceptable to accommodate mounting variations and vehicle dynamics. So the maximum roll value specified for AMG is 0.5 degrees, with a cross-roll limit of 10 degrees. The other options exceed the roll limit or use cross-roll values that don’t match the stated tolerances.

The key idea is that the Antenna Mast Group is kept nearly level to protect antenna pointing accuracy and prevent excess mechanical stress. The roll tolerance is the tight one: only 0.5 degrees. Even a small twist around the mast’s forward-back axis can misalign the antenna and degrade performance, so the spec imposes a very small roll limit.

The cross-roll tolerance is more forgiving, up to 10 degrees. This axis represents tilt in a different plane and has less impact on the antenna’s performance or on structural loads, so a larger allowance is acceptable to accommodate mounting variations and vehicle dynamics.

So the maximum roll value specified for AMG is 0.5 degrees, with a cross-roll limit of 10 degrees. The other options exceed the roll limit or use cross-roll values that don’t match the stated tolerances.

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