FEC (Forward Error Correction) vs Bidirectional
ABonAir Both WIFI and satellite technology uses push, one way transmission, and to reduce transmission error, FEC is applied. The disadvantage with FEC is it uses 50% of the transmission bandwidth for error redundancy. This means the transmission bandwidth is at most 50% efficient.
This will not impose a big issue to the folks like Visilink and BMS since it required a paid frequency band to operate. Since it is a paid license frequency, it also meant that there are recurring cost on acquiring the right to use the frequencies. As the right is also limited to country boundary, additional cost may incur when equipment is used beyond country boundary.