/diy/ - Do It Yourself

>>1835096
Like pic related, but air is the second part of the dipole.
You need to read about electromagnetism, maybe some courses for the HAM license have that ?

>>1802846
Antennas are a little bit witchcraft.
maybe you ran it parallel to a power line in that building new switched power supply induct the shit back into the net.

i suggest making a Dipole antenna. for the length you want λ/2 that means if you want 100mHz (the middle of FM) the wavelength is 2.9 meters so you want you're antennae to be 1.45Meters long.

take some 2 wire cable and if you can run it out of your building then split 70cm in 2 halves and hang them somewhere. and the end with the 2 wires goes into ground and antenna.

you can experiment with the direction of the antenna. to get a specific radio station. here in Germany radio stations send horizontal like in the gif so that works best if your station sends vertical you can hang the antenna vertical.