Who creates and works on radios and associated equipment? If I wanted to enter this field, what would I need to be? Electrical technician? Electrician? Radio Tech? Where do you learn how to do this?
There are few companies that will take a green horn into their lair. Best bet is for you to learn the basics of electronics for a start. Learn how Ohm's Law works and be able to understand how voltage and current are related. What function do the different components in a radio perform. Learn how a radio receiver and transmitter work. What does the coax cable and antenna do for the radio connected to them?
One of the best resources you can find is the Radio Amateur's Handbook. Today the name is the "ARRL Handbook" and the cost is high at $49.95 a copy. I still pull it out at work now and then. There are a number of good books at the ARRL site
ARRL :: Technical where you can sort of browse around and look at some of the different books. If you have a "Ham Radio Outlet" store near you, maybe a trip in person can let you look through some of the books available.
If you do go to the store, talk with the people there and inquire about some of the ham clubs in your area. Most of the people behind the counter are ham radio operators. They can point you in the right direction if you make a good impression on them. Maybe you can find someone near you that can work with you and act as a mentor to speed your learning along.
After I got out of the Army way back when, I managed to find a few hams that were working on a repeater. Found out they could use some help, so I became close friends with them and offered my self to work with them and the repeater. One of them became my mentor back then to speed up my understanding of radios and how to work on them.
Here some 40 plus years later, they are still some of my best friends. Even though I don't even live in the same region, when I do manage a trip back there, they are still glad to see me. The tower I helped build and the repeater I worked on is still there.
I have serviced 2 way radios, built cellular sites, designed the cellular sites, worked on microwave systems, designed microwave paths, spent a good number of my years working with the public safety dispatch centers and the federal government agencies on their communication systems. Today I work for a company that makes radio interoperability gateways. the work is interesting, fun, lets me travel around the country meeting different people all the time and I get paid to play with radios. Not bad for a radio nut. They call me the scrounge, because I always seem to come back from some of my trips with equipment that someone was getting rid of. Many of the radios at work that I get to play with were obtained in this fashion.
If this is the kind of work you think your interested in doing, then learn, learn and learn some more. maybe once you have planted your feet into electronics, even go to a tech school, then maybe you can find a radio service shop that will take you in and start you off doing install work and the ground work on tower jobs. You have to sort of try pushing your way in the door. Once your in there, the future is up to you.