The MT 18-SQB-(**)-B from The Waveguide Solution is a Waveguide Tee with Frequency 12.4 to 18 GHz, Isolation 19 to 32 dB, Isolation(Co-linear arms) 19 dB, Isolation(E & H arms) 32 dB. Tags: Magic Tee. More details for MT 18-SQB-(**)-B can be seen below.