A LOW-NOISE BLOCK DOWNCONVERTER (LNB). THIS IS A RECEIVING DEVICE MOUNTED ON A SATELLITE DISH. THE LNB COLLECTS THE RADIO WAVES FROM THE DISH AND CONVERTS THEM TO A SIGNAL WHICH IS SENT THROUGH A CABLE TO THE RECEIVER INSIDE THE BUILDING. IT DOWNCONVERTS THE BLOCK OF FREQUENCIES TO A LOWER BLOCK OF FREQUENCIES WHICH ALLOWS THE SIGNAL TO BE CARRIED TO THE INDOOR SATELLITE TV RECEIVER USING COAXIAL CABLE.

GENERAL RULES 1 3B) AND 6. WCO OPINION PAGE XVI/99 - 8543.70 LOW-NOISE BLOCK (LNB) DOWN CONVERTER. THE HARMONISED SYSTEM EXPLANATORY NOTES TO HEADING 8543 IN PARTICULAR NOTE 9. THE TEXT TO TARIC CODES 8543 70 90 99.