The ornamental design for an antennamountingdevice, as shown and described.
FIG. 1 is a perspective front view of an antenna mounting device.
FIG. 2 is a front view of the antenna mounting device of FIG. 1.
FIG. 3 is a rear view of the antenna mounting device of FIG. 1.
FIG. 4 is a left side view of the antenna mounting device of FIG. 1.
FIG. 5 is a right side view of the antenna mounting device of FIG. 1.
FIG. 6 is a top view of the antenna mounting device of FIG. 1; and,
FIG. 7 is a bottom view of the antenna mounting device of FIG. 1.
The dash-dot-dash broken lines immediately adjacent the shaded areas represent the bounds of the claimed design while all other broken lines are directed to environmental subject matter only; the broken lines form no part of the claimed design.