Boom Box Antennae Replacement I Have A Think Wire For An Antenna For My Radio That Hardly Works. Can I Improve The Strength?

I have a think wire for an antenna for my radio that hardly works. can i improve the strength? - boom box antennae replacement

Hello,
I bought my wife a montage Cabnet CD Player with AM / FM.
Love, but we are all for an antenna, a real black plastic ring thin cables have. Im not sure if I can peel the plastic down and a connection to something bigger, or what? I live in an area and have no problem with the most commonly used signals with antennas, but the boom thin wire is a joke.
Please help.
Thanks