FIG. 1 is a top, front and left side perspective view of a combined global positioning system antenna and preamplifier for a portable grid locator showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The electric cord in FIGS. 1-4, 6, and 7 is fragmentarily shown for the convenience of illustration.