I want to optimal use the resource. I want to cover a distance not more than 3 - 4 KM and the nearest customer house is 15 m from the tower where we are planning to install the MantBox Antenna. I went through the Specification of both the Device MantBox 15s & 19s. The Verticle azimuth for 15s is 10degree and 19s is 5degree. Whether 15s will be sufficient to cover the area or should I go for 19s.
What are the merit and demerit for both device and please explain me which one will be better in my case.
15dbi will be plenty for a 4Km link.