Focusing on Ka-band applications, the WR-51 waveguide switch block supports redundancy systems for the new generation of multimedia communication satellites. Specifications for frequency range (GHz) 18.25 - 20.25 include: VSWR (max.) is 1.10:1; insertion loss (dB max.) is 0.08 per switch path; isolation (dB min.) is 50; and RF power, WCW is 100.