I'd say that for doing RF design
work in today's commercial product (or MIL) environment
that you can't get to an acceptable level of proficiency
on your own. There are too many "gotcha" scenarios,
and the test equipement needed to test and verify
designs is too expensive for the vast majority of
It's going to be hard to break into
the RF business with this worldwide recession and
lower demand for products, but be persistent. There
are a lot of field service jobs available for wireless
operators, so that is a good place to get some experience.
If you can afford it I'd recommend staying in
school for a graduate degree, even PhD if you acn
afford it. By the time you graduate from that, the
market will probably be better.