twin LNB
In the universal design, the twin LNB is a combination of two single LNBs, to which two satellite receivers or digital receivers can be connected.
Since both low- noise block converters (LNBs) can be independently controlled by the 22 kHz control signal from the satellite receiver, simultaneous reception of analog TV and digital TV is possible. Just as with other LNB converters, the 14/18 V DC signal can be used to switch the polarization plane of the received satellite signal.