Flexible Cable DC 18GHz (Testport), 3.5mm to 7mm The Agilent (now Keysight) 85132E is a 97.2 cm (38.25 in) long flexible cable with a 3.5 mm female to 7 mm female connector. Cable frequency range: DC to 18 GHz Return loss: 17 dB or better Insertion loss: 0.35*(f/2) + 0.3 (where f is frequency in GHz, for test port connector) 1.8 dB at max. frequency (device connector) Phase stability of semi-rigid/flexible cables at 90 degree bend (4 to 3 inch radius): Stability: <0.22 dB Phase: 0.16*f + 0.8 (where f is frequency in GHz)