Quantic PMI Model No. EQL-DC40-10-292MF is a Passive Equalizer with a frequency range of DC to 40.0 GHz. This unit has an insertion loss of 12.0 dB @ 10 MHz, a VSWR of 1.6:1 Typ, an input power of +30 dBm, and an amplitude accuracy of ±2 dB Typ. The equalizer design allows both forward and reverse measurement to be equivalent.  Unit has 2.92 mm male and female connectors, and the housing size is 0.53" x 0.58" x 0.26".

https://www.pmi-rf.com/product-details/eql-dc40-10-292mf