help with CB

its snoodles

In Runtime
Ok so i have a old LG handheld CB radio and i need to plug it into a regular COAX CB antenna there is a place that says antenna on it but obviously does not fit the coax cable i saw some adapters for connecting the coax into the ducky antenna port but im not sure if it would work or not, im not very good with this kind of stuff im a computer tech i usually do not deal with these and i am confused on which i should get.

also i need a card charger that i cannot seem to find online either.

edit** i found out what the antenna port is it is and RCA port can i get just any COAX to RCA cable?