Radio Frequency Attenuators Q9/BNC coaxial fixed attenuator, attenuation levels: 1dB, 2dB, 3dB, 4dB, 5dB, 6dB, 7dB, 8dB, 10dB, 15dB, 20dB, 40dB, 30dB; frequency: DC to 3GHz, 6GHz; 2 watts