Propagation Maps

http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap

http://www.sws.bom.gov.au/Images/HF Systems/Global HF/Ionospheric Map/WorldIMap0.gif

http://www.dxmaps.com/spots/mapg.php?Lan=E&Frec=3&ML=M&Map=W2LN&HF=S&DXC=ING2&GL=N