- VOCAP Online http://www.voacap.com/prediction.html
- How to DX for Dummies http://www.athensradioclub.org/docs/New_dxers_handbook-1.pdf
- Northern California DX Foundation http://www.ncdxf.org/pages/beacons.html
- Day and Night World Map http://www.timeanddate.com/worldclock/sunearth.html
- DXCC Countries List & Personalized Beam Headings http://www.njdxa.org/dx-tools/beam-headings.php