3.4 is considered descent these days. Not 3.0.
Anything below 3.4 is garbage without a top tier school brand name.
with a 2.6, you'll just end up in a state school, and then nobody is going to hire you unless you somehow raise your GPA to 3.7+.
The key factor here is your race and your family situation. You can get a lot of pity out there if you come from a low income "urban" ethnic group. If you are a under represented minority, I would play that angle to the maximum. It will work.
A bachelor's degree doesn't mean shyt, and nobody cares about you or your personal achievements.
Take serious look into your life and figure out what is best for you. Rad-tech is only 1.5 half years of school for you, but you'll NEVER get into a good Rad-tech program at CC.
It depends on the school and the major. A 3.4 GPA is a good GPA and can get you into a lot of good schools and programs.