In radio, people just starting can expect not much more than minimum wage. The same can also be said of entry-level jobs in the recording field, in most parts of the country. The salaries generally increase with time, but unfortunately, in commercial radio, there is not much job security. If one reaches the level of a hit record producer or engineers, six figure salaries can be achieved, but they are rare, and when becomes an independent producer (which most of the "big names" are) then your employment can be fickle -- a hit one year, and considered out of style a couple of years later. Engineering is more stable, but high-level positions are relatively few.