Accession Number:

AD0274017

Title:

A SYSTEM FOR RECORDING ELECTROMAGNETIC ATMOSPHERIC NOISE IN 3-50 CPS REGION

Descriptive Note:

Corporate Author:

NEW MEXICO UNIV ALBUQUERQUE ENGINEERING EXPERIMENT STATION

Personal Author(s):

Report Date:

1962-01-01

Pagination or Media Count:

157.0

Abstract:

Instrumentation was developed to secure noise data in the 3 to 50 cps portion of the spectrum and, at the same time, to seek evidence of the Schumann frequencies in this region. A frequency translation technique is employed during recording. During playback, the data is again translated and restored to its normal position in the spectrum. A test signal is used to ensure that in the record mode the gain is maintained within 1.2 db. Under this restriction, test tapes recorded at frequencies in the 3 to 50 cps range indicate the gain from the antenna input during record to the receiver output during playback. The over-all response in this frequency range is the response of the receiver, i.e., within 3 db.

Subject Categories:

  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE