SPECTRUM DIVIDING OR BANDPASS FILTERS SUITABLE FOR APPLICATIONS IN THE RANGE OF 30 - 2000 MHz. HELICAL FILTERS COVER SUB-BANDS WITHIN THE RANGE OF 50-500MHz AND COMBLINE FILTERS WHICH COVER SUB-BANDS WITHIN THE RANGE OF 160-2000MHz.

CLASSIFICATION IS DETERMINED BY THE PROVISIONS OF GENERAL INTERPRETATIVE RULES 1 AND 6 AS WELL AS THE TEXT OF HEADINGS 8529 AND 852910.