/diy/ - Do It Yourself

>>1835096
>don't you need a closed circuit
Yes, you do. There is no one-terminal light bulb and there is no one-terminal antenna. If you only connect a wire to the center of the connector, the rest of the radio (including anything else connected to it) forms the second terminal.

>>1650035
>rubber ducky antenna provided while on the move
A resonant counterpoise helps to complete the dipole instead of relying on the chassis of the radio as a lossy second half of the antenna.