How to determine how many EN4200 Receivers can be used with the B810.

How many EN4200 receivers can be used with the B820?
Answer:
Only one B820 can be connected to the SDI2 bus and only one EN4200 can be connected to the B820.
If there is weak wireless signal in parts of an installation site, a EN5040-T repeater may be added to improve signal strength at the transmitter location.
The EN5040-T will capture signals from the transmitter and repeat them at four times the transmitter's power.