DocumentCode
1039121
Title
A sweep frequency ionosphere recorder for the low frequencies
Author
Blair, J.C. ; Brown, J.N. ; Watts, J.M.
Author_Institution
National Bureau of Standards, Washington, DC, USA
fYear
1952
fDate
8/1/1952 12:00:00 AM
Firstpage
185
Lastpage
185
Abstract
Application of the techniques heretofore used in high frequency ionosphere recorders is described. The beat frequency method of generating wide frequency sweeps is used, covering frequencies from 50 kc to 1,000 kc in a short time without band switching. Advantage is gained by the use of transformers containing ferromagnetic cores in the wide band transmitter amplifiers, but the antenna system, for practical reasons, is very inefficient. Sample records are shown.
Keywords
Ionospheric measurements; LF radio propagation; Frequency; Ionosphere;
fLanguage
English
Journal_Title
Antennas and Propagation, Transactions of the IRE Professional Group on
Publisher
ieee
ISSN
2168-0639
Type
jour
DOI
10.1109/T-AP.1952.28034
Filename
1144273
Link To Document