Actually it can cover more than 1KM basta may Line of Sight
But the Problem is the Device mag Connect like Smartphone, Tablet or Laptop They Are mostly Design for Close Connectivity Around 100 meters
But kung may Device ka design for Long Distance pwede 5KM
About sa Omni Base sa nakikita ko sa Device nayan pwede Ubiquiti Airmax 10dbi 2.4ghz
Dahil yan design sa Device nakikita ko or. pwede rin dalawang Tplink 15dbi Omni Antenna but dapat alam mo ilan kalayo Separation ng dalawang antenna