...... of course coupled to an external dipole, etc. antenna pre-tuned/cut to the frequency ranges you want to listen to: 4, 6, 8 Mhz.
I use an older Sangean ATS 909 as a backup receiver and for general SW listening.
http://www.universal-radio.com/catalog/portable/2909.html ... newer & soon to be released 909 that resolves some of the previous issues.