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Band Reject Duplexer provides extremely high isolation for separation at a minimum of 300
kHz in the 30-50 MHz frequency range. The use of carefully temperature-compensated helical
resonators, in conjunction with the reject notch design, allow the 8-cavity duplexer to be
housed in a cabinet 22 inches wide, 18 inches deep and only 66 inches high. Comparable
performance utilizing conventional quarter-wave resonators would require a cabinet nearly
twice as high, with four times the volume.