I recently bought a cheap stereo amplifier with built in FM receiver from Amazon at the first link below. Testing it out today I found the FM reception to be sub-par. All of my local stations that I can pick up in my car sound fuzzy. The antenna is approximately 14 inches long and is simply a floppy cord. Pictures are at the second link below.
I would like to build a better antenna to get better reception. If I can get reception equal to the reception you find on an OEM economy box car radio, I'd be plenty happy. What is a simple path forward?