CSEI is a RF & telecommunications testing & engineering firm; specializing in RF spectrum analysis including calibrated field measurements for radio, television & wireless signals; RF interference characterization and source tracking, cable television ‘technical due diligence’ & FCC Proof of Performance testing; off-air ATSC reception (8-VSB) testing (full analysis with a 8-VSB analyzer) including tower & site analysis (computerized and on-site measurements), and broadband engineering services including optical and RF/AC design & mapping.

CSEI is located in the scenic Loess Hills of western Iowa just outside the greater Omaha, NE / Council Bluffs, IA area.