Coaxial cable assemblies are often the most overlooked part of a long range networking link and they could mean the difference between having your system work or not at all.
Since RF (Radio frequency) is passing from the radio (router, USB Adapters, AP) to the antenna; it will lose signal strength (measured in dB) over the cable run. This is called attenuation.
To combat this issue, using the shortest cable run possible is ideal. After that the thickness of the cable insulation plays a major role in how much signal quality is maintain through your network.