Solar 9130-1 Loop Antenna
Description
For Receiving or Generating Magnetic Fields 10 kHz – 3 MHz
This antenna was designed as a replacement for Eaton 94608-1. It is similar to Stoddart 91117-2, 30-inch diameter loop, supplied with AN/URM-6B and NM-10A EMI receivers. In addition to operating as a receiving antenna, the Type 9130-1 Loop Antenna is capable of carrying ten amperes in test setups for generating magnetic fields.
Although the antenna it is replacing is circular (30 inches in diameter), the Type 9130-1 Loop Antenna is almost square, 28.5″ x 29.75″ with 6.31″ radius at each corner (12.4 cm x 75.5 cm with 16 cm radius). This larger area results in an improved pickup factor. The loop is wound with larger wire than the original, so that it can carry more current in the transmitting mode. Fitted with a Type N connector.
Features
Solar 9130-1 Application
As a receiving antenna the Type 9130-1 is more sensitive than the original 30-inch diameter loops. The graph below shows the comparison when connected to a receiver with 50 ohm input impedance. When used to generate magnetic fields, the Type 9130-1 Loop Antenna is capable of carrying up to ten amperes through its eleven turns, making 110-ampere turns. With one ampere flowing through the winding, the magnetic field generated is over 277.5 volts-per-meter at one meter distance from the plane of the loop and 12.6 volts-per-meter at three meters distance. With ten amperes flowing, the field intensity is 126 volts-per-meter at three meters distance.
