1983-84 Connecticut 45-Hz-Band Field-Strength Measurements.
Abstract
Extremely low frequency (ELF) measurements are made of the transverse horizontal magnetic field strength received in Connecticut. The AN/BSR-1 receiver is composed of an AN/UYK-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. Navy's 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 07, 1986
- Accession Number
- ADA169543
Entities
People
- Peter R. Bannister
Organizations
- Naval Underwater Systems Center