Q6H
Q6H stands for Every 6 Hours
Q5H
Q5H stands for Every 5 Hours
Q4H
Q4H stands for Every 4 Hours
Q3TA
Q3TA stands for Quake 3: Team Arena (Quake 3 expansion pack)
Q3R
Q3R stands for Quake 3 Radiant (design tool)
Q3H
Q3H stands for Every 3 Hours
Q3F
Q3F stands for Quake 3 Fortress
Q3D
Q3D stands for Quasi-Three-Dimensional
Q3A
Q3A stands for Quake 3 Arena
Q2PSK
Q2PSK stands for Quadrature-Quadrature Phase Shift Keying