|9:1 Selectable Ground UN-UN for End-Fed Receive Antennas
This is a nice little project for those of you who wish to have a high
performance, low noise receive antenna for the HF bands.
|Choose the toroid mix that suits your needs the best.
The one pictured above is from
I used T130-6, trifilar wound with 22 AWG Enameled Copper Wire.