What is the best type of antenna to link between X and Y?
That’s like asking which is the best vehicle to get from A to B in! If you want to get from one side of a large metropolitan city to the other, you might consider using many types of transport from your own feet, through public transport, to flying a helicopter at great expense. Similarly, there are many options available when it comes to selecting an antenna to get connected. If you’ve bought an AccessPoint or a client adapter already, chances are a small omni-directional antenna has been included, allowing you to make connections from about 50m away in every direction given good conditions. The cheapest long range antennas are the do-it-yourself style (homebrew). You have the freedom to build whatever you want, providing you have the expertise or can find someone to give you a hand. A Cantenna can manage a directional link up to about 5km in the right conditions and costs about $5. Do some in-depth technical reading, spend a fortune and years of your life and you could build an anten
