1. Cancelation of ambient
Does it work?
What are the limitations?
Signal type
Broadband noise
Narrowband signals
Strength of ambient vs EUT
Fluctuating ambient

2. Cancelation experiment
The setup
“EUT”
“Ambient”

3. The reality Laboratory environment, awful site.
Lots of metal shelving, filing cabinets and equipment in immediate vicinity.
Single sweeps only, no attempt to edit background or average results.
EUT and Ambient generators are comb generators with 20ppm frequency separation.

6. Make this one
EUT
Call this one
ambient

14. Site Calibration Required for ‘simple’ indoor and outdoor open sites.
Helps identify good vs bad locations
Checks correct operation of instrumentation on any site.
Removes need for height scanning and ground plane.
Validity of calibration depends on many factors......

15. Site calibration
Size of radiating source compared with calibration source.
Accurate location of calibration source.
Site confinement.
Effect of large EUT on site characteristics.