QDR-1 is a passive frequency doubler that operates with an input frequency range from 0.85 to 2.0GHz and an output frequency range from 1.7 to 4.0GHz.

QDR-1 is a passive frequency doubler that operates with an input frequency range from 0.85 to 2.0GHz and an output frequency range from 1.7 to 4.0GHz.