ISL6424 Dual LNB Controller with I2C Interface for Advanced Satellite Set-Top Box Designs ISL6424 Dual LNB Controller with I2C Interface for Advanced Satellite Set-Top Box Designs Application Note March 21, 2005 AN1177.0 Introduction (right-hand or left-hand). Consequently, the satellite can broadcast both H and V or LH and RH polarized signals via Communication Satellite Frequency Allocation one frequency. Communication satellites operate within two frequency ……