Applicable to all units. Read-write in units where
brzaccVLAntennaGainChange is supported.
Read-only in units where brzaccVLAntennaGainChange is not supported.
The net gain (including cable attenuation for detached antennas) of
the antenna.
Range: 0 - to Maximum EIRP defined by country code + 10 (dBi).
A value of -2 (this value is configurable only in factory)
means don't care.
A value of -1 (this value is configurable only in factory)
means that the unit will not transmit until the actual value
is configured.