This read-write object controls LNB power: off(0), on at 13V(1), on at 18V(2), or on at 24V(3). The chosen voltage typically selects LNB polarization or band on dual-band/dual-polarity LNBs, a common convention being 13V for one polarization and 18V for the other, so setting the wrong voltage here can leave the antenna feed receiving the wrong polarization entirely, presenting as a completely unlocked demodulator despite correct pointing and frequency. If a technician swaps to a transponder that requires vertical rather than horizontal polarization, they'd typically need to change this object from 13V(1) to 18V(2) to actually feed the correct polarity to the demodulator.