Active Noise Filter for Radio and Intercom Systems is an affordable accessory designed to suppress noise generated through the charging system/power supply by being installed inline with your radio and intercom. This filter improves communication, and flaming current fluctuations from electrical components or accessories contribute to noise and disrupt conversations. This plug-and-go accessory can enhance the sound quality for both your intercom and radio when installed on the power lead to your component. The value of this small investment is evident in profound audio enhancement. This Filter also features waterproof connectors compatible with mobile radios manufactured by Rugged Radios.