Accession Number:

ADA169543

Title:

1983-84 Connecticut 45-Hz-Band Field-Strength Measurements.

Descriptive Note:

Technical rept.,

Corporate Author:

NAVAL UNDERWATER SYSTEMS CENTER NEW LONDON CT NEW LONDON LAB

Personal Author(s):

Report Date:

1986-03-07

Pagination or Media Count:

30.0

Abstract:

Extremely low frequency ELF measurements are made of the transverse horizontal magnetic field strength received in Connecticut. The ANBSR-1 receiver is composed of an ANUYK-20 minicomputer, a signal timing and interface unit STIU, a rubidium frequency time standard, two magnetic tape recorders, and a preamplifier. The transmission source of these farfield 1.6-Mm range measurements is the U.S. Navys ELF Wisconsin Test Facility WTF, located in the Chequamegon National ofrest in north central Wisconsin, about 8 km south of the village of Clam Lake. The WTF consists of two 22.5-km antennas one antenna is located approximately in the north-south NS direction and one is located approximately in the east-west EW direction. Each antenna is grounded at both ends. The electrical axis of the WTF EW antenna is 11 deg east of north at 45 Hz and 14 deg east of north at 75Hz. The electrical axis of the WTF NS antenna is 11 deg east of north at 45 Hz and 14 deg east of north at 75 Hz. The WTF array can be steered electrically toward any particular location. Its radiated power is approximately 0.5 W at 45 Hz and 1 W at 75 Hz. This report will discuss the results fo the limited amount of 45 Hz band data taken during 1983-84 and compare them with previous 45 Hz band measurement results.

Subject Categories:

  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE