We have a couple of shortwave receivers;
In BOB's etc we have added little cheap
one from http://countycomm.com/gp4light.htm
While a very limited model, it's so cheap that we could get a half dozen, one for each BOB/CAR.

In our house we have a couple of radio shack models which are like the sony/grundig mid range models.
In addition we have a power hog tube model, but at least it will work post EMP right.
These can be found cheap too.
My personal favorite is the IC-R20 from ICom, 150Khz to 3.3 Ghz, portable and battery powered (can use AA bat's).

For antenna a long wire is really cheap and has descent gain.
These can be installed without being noticed by your next door peeping neighbors too.

A copy of the ARRL handbook can be viewed at your local library for extensive reference to Antenna designs.