The hardline comes from our old Wayne Kerr RF signal generator. The hacked board has a 0.1 ohm resistor to ground, DUT inductor, two 33 pF caps to ground, and a Tek SD14 3 GHz sampling scope probe. I measure Q by finding the series resonant CF and the half-power-point frequencies.
ftp://jjlarkin.lmi.net/Q-meter.jpg
The two 33 pF caps gave a slightly higher Q than using a single 68.
That 1008 inductor has a measured Q of 31 at 50 MHz. My home-made powdered-iron toroid (below) measures 72, and a Coilcraft spring inductor is 79.
ftp://jjlarkin.lmi.net/L_Assy.jpg
John