This is as far as I've gotten, as I want to research some more, and wait until I get a closer look at the radio in my workshop

- where are better antenna and other components sourced?

-how does one account for the water resistant seals when further dissassembling (seals around the On-Off/Volume knob, PTT switch and headphone/mic connectors)

-what is the spinning item/motor for? tone generation? some kind of EM field? (motor marked with yellow circle in 2nd pic)