RADOME HOUSING UNIT. THIS HOUSING PROTECTS AN ANTENNA FROM EXPOSURE TO THE ELEMENTS AND IS MADE FROM MATERIAL THAT IS TRANSPARENT TO RADIO WAVES. THE DESIGN IS SPECIFICALLY LINKED TO THE FREQUENCY REQUIREMENTS OF THE ANTENNA DESIGN AND IS ESSENTIAL TO THE PERFORMANCE OF THE ANTENNA. THE HOUSING CAN BE MADE FROM ASA, ABS, PVC OR FIBREGLASS AS EACH MATERIAL HAS A DIFFERENT DK VALUE (DIELECTRIC CONSTANT).

GIR 1 & 6. NOTE 2(b) TO SECTION XVI. THE TEXT TO CODES 8517 & 8517 70. THE HSEN TO HEADING 8517.