Multi-purpose satellite positioning antenna, yoyenera kufufuza kwa satellite ndi kuyika m'malo osiyanasiyana ovuta nyengo, kuchepetsa kuchedwa kwa zizindikiro, kulondola kwa malo apamwamba ndi chizindikiro chokhazikika.
Zosavuta kukhazikitsa, zazing'ono komanso zosavuta, zitha kugwiritsidwa ntchito ngati zida zonyamula kapena zida zokhazikika