On Thursday, May 28, 2015 at 1:15:15 AM UTC-4, wrote:
Hoping to improve FM reception I mistakenly bought an antenna that I read people use on boats. Unfortunately the cable does not match the 75 ohm jack at the back of the radio. Therefore I am looking for the female part to fit the jack and then have that connected to the antenna by someone who knows how to do that. My question is: where can I find that female part to fit the jack on my radio?

Any ideas are greatly appreciated.

S350 has a PAL connector. What you need is a Pal F -to -F adapter. $2.29 item at Universal Radio.