The FT-1500 from ETS-Lindgren is a Microwave Absorber with Frequency 30 MHz to 1 GHz, Power 1000 V/m CW, Thickness 0.98 inch/25.0 mm, Thickness 0.98 inch, Thickness (mm) 25.0 mm. Tags: Ferrite, Surface Wave Absorber. More details for FT-1500 can be seen below.