NOISE EMISSIONS IN THE AUDIO-FREQUENCY RANGE.
Abstract
Broadband noise emissions in the audiofrequency range, as well as the dirurnal variation of this background noise The measurements were studied. Were carried out near Paksuniemi, about 25 kms east of Kiruna Geophysical Observatory at a place which is almost free from man-made contamination. The nearest 50 cps power lines are more than 7 km from the observation site. Spectrograms of the electromagnetic energy in the frequency region between 10 cps and 10 kc/s have been monitored continuously from November 14, 1961, to January 29, 1962. A description of the receiving equipment, the antennas and methods of measurement is given. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 07, 1962
- Accession Number
- AD0282242
Entities
People
- Alv Egeland
- Georg Gustafsson
- Sven Olsen