http://www.voacap.com/p2p/index.html Ett prognosprogram online med VOACAP i botten

http://www.dxatlas.com/hamcap/ Ett prognosprogram att ladda ned med VOACAP i botten

http://dx.qsl.net/propagation/ Radioväder

https://en.wikipedia.org/wiki/K-index Definition av k- och A-värden

https://sizes.com/units/solar_flux_unit.htm SFI mäts i enheten SFU. Definition

http://flux.phys.uit.no/Kindice/ K-värde mätt vid flera norska stationer. Dombås ligger närmast oss.

http://www.qsl.net/l/lu7did/docs/QRPp/09.pdf Allt om vertikalantenner

http://on4khg.be/eme-et-gain-de-sol/ Beräkningsprogram för markreflexen. Klicka på Simulateur de gain de sol

Ett antal artiklar om  vågutbredning i jonosfären skrivna av ON5AU  ”Ionosphere Properties and Behaviours”:

https://www.antennex.com/prop/prop0606/prop0606.pdf

https://www.antennex.com/prop/prop0706/prop0706.pdf

https://www.antennex.com/prop/prop0806/prop0806.pdf

https://www.antennex.com/prop/prop0906/prop0906-guests.pdf

https://www.antennex.com/prop/prop1006/prop1006-guests.pdf

https://www.antennex.com/prop/prop1106/prop1106-guests.pdf

https://www.antennex.com/prop/prop1206/prop1206.pdf

https://www.antennex.com/prop/prop0107/prop0107.pdf

https://www.antennex.com/prop/prop0107/prop0107.pdf

https://www.antennex.com/prop/prop0207/prop0207.pdf

https://www.antennex.com/prop/prop0207/prop0207.pdf

https://www.antennex.com/prop/prop0307/prop0307.pdf

https://www.antennex.com/prop/prop0407/prop0407.pdf

https://www.antennex.com/prop/prop0507/prop0507.pdf