Q. I installed a new PL-259 connector on my radio antenna’s coaxial cable several times using both solder and crimp-on connectors. The problem is that, when I screw the threads of the connector’s ...

Here is an idea for a simple low-cost adaptor that allows a portable FM radio (or MP3 player with FM tuner) to be connected to an external antenna and to audio equipment such as a hifi system or PC ...