The number of Network Interface Cards depends on the number of available slots on the router's motherboard. The Wireless Client Card is installed into the client's workstation using the drivers provided by the card manufacturer. The antenna is mounted in a place, where it can see the Base Station antenna. The data transfer speed is 11Mbps. However, the actual throughput is 5-6Mbps.
All clients share the same bandwidth.
The maximum distance is approximately 10-12 km, but it is influenced by various factors, like the antenna gains, cable length, cable attenuation, radio transmit power, radio receive sensitivity, interference from other radio transmitters at the same frequency band. We ship 5m cable for the Base Station, and 9m cable for the Wireless Clients. Different cable length can be ordered from us by the customer. Yes, but the maximum distance will decrease accordingly. Yes, amplifiers can be used to extend the distance.