The Shortwave Coil Up Antenna is a good option if you choose to keep a shortwave radio as a receiver for use after an "event". Cheap and fairly foolproof.

As for a decent radio, there are lots, just check Amazon. I keep a CountyComm GP-5 SSB radio in my steel (hopefully EMP-proof) box. It's a good receiver -- good AM & FM, and the DSP cleans up a lot of noise. No affiliation other than as an owner/user.

As for atmospherics after an "event", a long time back I learned that while some comms will be reduced, others will be enhanced. Some HF/SW freqs use skywaves and others use ground waves for propagation -- same concept. After the event, set up your receiver and do a slow scan, see what's out there. $.02