Node {{{md2}}} is a [https://wiki.cosmos-lab.org/wiki/Hardware/Nodes#MediumNode Medium Node] located on the second floor of the Mudd Building at Columbia University, overlooking Amsterdam Avenue. The [https://wiki.cosmos-lab.org/wiki/Hardware/antennas#Omni-directionalmediumnode omni-directional antenna] has line-of-sight to the majority of Amsterdam Ave. between 117th St. and 121nd St., as well as to parts of 120th St. and 119th St. headed east.

'''''Contributors:''' Angel Daniel Estigarribia, Watson Mushimbei, Irfan Tamim''

'''''Data:''' [https://wiki.cosmos-lab.org/raw-attachment/wiki/Hardware/Nodes/Measurements/md2/rssi_coverage_map_md2.csv Available here (CSV)]

==== Node photographs
 ||||||Figure 1: Photographs of md2 ||
 || [[Image(md2_street.jpeg, 350px)]] ||
 || (a) Viewed from across Amsterdam Avenue ||

==== Coverage
[https://wiki.cosmos-lab.org/wiki/Hardware/Nodes/Measurements Coverage measurements] were performed in the area around {{{md2}}} in March and April 2021. In total, around 100 measurements have been taken on sidewalks in the area spaced by roughly 5m-spaced. The measurement results are presented below.

 || [[Image(rssi_coverage_map_md2.png, 800px)]] 
 || Figure 1: Coverage measurement results for {{{md2}}}.

These measurements demonstrate an RSSI of around -72 dBm at a 200m  distance down the street. As would be expected, the locations close to the node experience the highest RSSI. 

Up to -82 dBm coverage is achieved up to 70m up a street which is around a corner.