About Our CobaltFX CobaltFx is an unprecedented approach for millimeter-wave S-parameter measurements in three dedicated waveguide bands, 50-75 GHz, 60-90 GHz and 75-110 GHz. The system is anchored by a 2 or 4-Port, 9 GHz or 20 GHz Cobalt Series USB Vector Network Analyzer and features frequency extension modules from Farran Technology and a precision calibration kit.