Lambert, AndrewAndrewLambertCarpenter, SimoneSimoneCarpenterBellossi, RaphaëlRaphaëlBellossiStein, KarinKarinSteinEichhorn, MarcMarcEichhornGladysz, SzymonSzymonGladysz2022-03-142022-03-142020https://publica.fraunhofer.de/handle/publica/40986910.1364/AOMS.2020.JW4G.3We have designed and built a transmitter and a receiver positioned at two ends of a 7.2-km free-space path. Path height is 20-30 m above the terrain with slant differential of ~20 m over the entire distance. The link, operating at the 1550 nm wavelength is producing first measurements.en004670conference paper