Home » 50R-249 50R-249 January 17, 2011 No Comments The 50R-249 provides variable attenuation from DC-2500 MHz. Resolution of 0.1 dB make it perfect for precision laboratory applications. Related Articles 9R7-1575.42-50S11 GPS Notch Filter All in one: The R&S FSUP combines a spectrum analyzer up to 50 GHz with a phase noise tester 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.