- The AF120 is a 30:1 passive filter designed to prevent noise in the 120kHz range (created by the load) from interfering with Powerline Carrier transmissions on the powerline. The AF120 is a high-pass and a lowpass filter. Frequencies less than 80kHz and greater than 200kHz are allowed to pass through the circuit relatively unaffected. However, frequencies within 80kHz to 150kHz, are attenuated significantly. This unit can also be used on loads that that have the capability of decreasing the Powerline Carrier transmissions.
