VLF magnetic field antenna system
This section outlines a VLF magnetic field antenna system installed at Arrival Heights, Ross Island, Antarctica.
21 Aug 2019
Slideshow presentation and photos
A slideshow presentation on the antenna system is available
Additional photos of the system.
Magnetic field preamplifier
Magnetic field preamplifier schematics
Input Transformers
The impedance of a large single turn loop antenna is very low. For optimum noise performance a step up input transformer is needed.
For this design the input transformers are wound on "L8" 25x15x10mm ferrite toroids. 12 turns input and 96 turns output for a 1:8 step up ratio. Properties of the L8 ferrite material are in this PDF
16 Aug 2019