During August/September 1971, NUSC/NL performed pattern and steering measurements on both the NS and EW Wisconsin Test Facility (WTF) antennas. The 45 and 75 Hz near field pattern measurements were made at 13 different locations in Eastern Minnesota and Southern Wisconsin (covering approximately

of arc), while the far field steering tests were taken in Mars Hill, Maine and Swansboro, North Carolina. The principal results obtained from the pattern and steering measurements were (1) the WTF EW antenna pattern is skewed clockwise: (2) the WTF NS antenna pattern is skewed counterclockwise: and (3) the effective conductivity under the WTF EW antenna is greater than the effective conductivity under the WTF NS antenna.