Long Range Wireless Data Transmitter and Receiver kit via RJ45 price

Question 1: I’m looking for a wireless data transmitter for

1. Data speed is 500Mbps -1Gbps via RJ45
2. frequency is 5.8Ghz or more we need the short antenna
3. LOS is around 3-5 Km.

Question 2: What are your Application scenarios? Any more parameters? Does the transmitter and receiver are from Air to the ground? Is it Fixed or mobile?

Apply to car race data transmission

Question 3: How many cameras are there in the car? Why is the data so large?

Our application is not from air to ground transmission distance. We used it for transferring the race data logging. There are many real-time data from race cars inside the ECU.