The ornamental design for an antennapedestal, as shown and described.
FIG. 1 is a perspective view taken from the front and left side showing the new design;
FIG. 2 is a left side elevation view thereof;
FIG. 3 is a right side elevation view thereof;
FIG. 4 is a front edge view thereof;
FIG. 5 is a top end view thereof;
FIG. 6 is a perspective view from the front and left thereof, showing the antenna pedestal attached to a support member; and,
FIG. 7 is a perspective view from the front and right thereof, showing the antenna pedestal attached to a support member.
The broken lines in the drawings depict portions of the article that form no part of the claimed design. The broken line support member shown in FIGS. 6 and 7 represents environment that forms no part of the claimed design.