The following diagram shows the structure of ENAMS:

 

 

characteristics of ENAMS:

parameter rating
 
 
Sensitivity: better than interference level according to ‘ITU rural’“
Measurement: bandwidth 300 Hz, 6 x per hour
Measured value: Average power value over 1 second
Measured value transmission: secure data connection with central server
Storage: in a database, redundant
Calibration: device set - consisting of antenna and receiver with cable - is calibrated
Operation monitoring: continuous, serves to detect faulty devices, internal calibration check after each measurement
Operating time: at least 5 years
Locations: where radio amateurs live or operate their stations:
ITU categories ‘rural’, ‘residential area’, ‘urban’
Site conditions: Antenna mounted on the ground, the antenna should have a clear view, the elevation angle is 45°