Node {{{s2-lg1}}} is the second sector of [https://wiki.cosmos-lab.org/wiki/Hardware/Nodes#LargeNode Large Node] 1, located on the 18th floor roof of the Mudd Building at Columbia University, roughly 50m above the campus level and 60m above the street level. Sector 2's [https://wiki.cosmos-lab.org/wiki/Hardware/antennas#Directionallargenodesector antenna] is pointed to the northwest overlooking the intersection of Broadway and 120th St, and Manhattanville, West Harlem.

'''''Contributors''': Gulnur Avci, Sienna Brent, Sabbir Hossain, Jared Moser, Manav Kohli''

'''''Data''': [https://wiki.cosmos-lab.org/raw-attachment/wiki/Architecture/Deployment/Measurements/s2-lg1/rssi_coverage_map_s2-lg1.csv Available here (CSV)]''

==== Node photographs
 ||||||Figure 1: Photographs of s2-lg1 ||
 || [[Image(s2-lg1_roof.jpg, 600px)]] || 
 || Looking down from Mudd building rooftop. s2-lg1 antenna on the far left.  ||

==== Coverage
[https://wiki.cosmos-lab.org/wiki/Hardware/Nodes/Measurements Coverage measurements] were performed around the campus area in June-August 2021. In total, X measurements were taken in the streets around the large node. The measurement results are presented below.

 |||||| Figure 2: Coverage measurement results for {{{s3-lg1}}}. ||
 || [[Image(rssi_coverage_map_s2-lg1.png, height=400px)]] || [[Image(s2-lg1_antenna_coverage.png, height=400px)]] ||
 || (a) Measurement results || (b) 60 degree 3dB antenna beamwidth displayed over measurement map ||