These methods wil help to boost your wifi signals but cant guarantee that it will reach upto 0.3km
*.reposition your routeror access point (AP) to avoid obstructions and radio interference. Both reduce the range of Wi-Fi network equipment. Common sources of interference in residences include brick or plaster walls, microwave ovens, and cordless phones. Additionally, considerchanging the Wi-Fi channel numberon yourequipment to avoid interference.
*.upgrade the antenna on your routeror access point. Wi-Fi antennas on most wireless base stations can be removed and replaced with more powerful ones.
*.add another access point(or router). Large residences typically require no more than two APs, whereas businesses mayemploy dozens of APs. In a...