Documents / Document
This is Volume 2 of the Ministry of Defence report 'Unidentified Aerial Phenomena in the UK Air Defence Region', Defence Intelligence Staff Scientific and Technical Memorandum 55/2/00, dated February 2000 and received 7 December 2000. It gathers 25 working papers on natural and man-made phenomena, meant as a reference for analysing UAP reports. The papers cover ball lightning, radar detection, balloons, satellites, mirages, plasma and similar subjects. One paper compares magnetic field experiments on human volunteers with close encounter reports. It concludes that effects from such fields are 'uncannily similar' to what witnesses describe.
“Hill”6 pages
# UNCLASSIFIED
UK RESTRICTED
Object (UAP) $ ^{[1]} $ Diameter(m) $\lambda(m)\{f(MHz)\}^{[2]}$
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 (c.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 $ ( 2 D^{2} / \lambda) $ Document, cited by the archive. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 258 pages are in the text index: search them above, or from the library's search.