Home » Notch Filter - Low Frequency, High Power Notch Filter - Low Frequency, High Power January 17, 2011 Reactel Inc. No Comments Reactel Inc. introduces a low frequency, high power notch filter that is perfect for co-site interference applications. While this unit is centered at 434 MHz, there are many other center frequency and passband configurations available. Related Articles Reactel Touts Low Frequency, High Power Notch Filter Notch Filter: 6R7-1575.42-X15N11 Post a comment to this article Name* E-mail (will not be displayed)* Subject Comment* Report Abusive Comment Thank you for helping us to improve our forums. Is this comment offensive? Please tell us why.