Generic photo used for illustration purposes only.
WS4-L is a WR-4 waveguide straight section with UG-387/U Mod round cover flange. This waveguide straight covers the frequency range of 172-261 GHz. RF ONE offers a complete line of waveguide straight sections covering the waveguide sizes WR3 to WR1150.
For model WS4-L, replace the "L" with the desired length.
