UNCLASSIFIED
UK RESTRICTED
Object (UAP)[1]
Diameter (m)
λ(m){f(MHz)}[2]
100{3}
10{30}
1{300}
0.10{3,000}
0.01{30,000}
0.5
0.005
0.05
0.5
5.0
5.0
1.0
0.020
0.20
2.0
20
200
1.5
0.045
0.45
4.5
45
450
3.0
0.180
1.80
18.0
180
1800
10.0
2.000
20.0
200
2000
20,000
20.0
8.000
80.0
800
8000
80,000
TABLE F-2: NEAR FIELD DISTANCES[3] (m)
Notes:
[1] Assumes that UAP is a radiation plasma or charged mass source with effective aperture shown. The recorded appearance of plasma balls exceptionally reaches the largest value shown. However, this should not be confused with the large triangles, rectangles and other large shapes reported. These possibly have radiating peaks (e.g. at the “corners” but, as they do not appear to be (visually) homogeneous seem unlikely to represent a total radiation aperture.
[2] It is not known whether UAPs radiate narrow or wide-band RFs.
[3] The standard near-field criteria is used ( $2D^2/\lambda$ ).
---
F-7
UNCLASSIFIED
UK RESTRICTED