Dopplergrams
Mediciones Doppler en Tucuman:
Balizas OK0EU y doppler/fading observado por G4ZFQ:
https://sites.google.com/site/g4zfqradio/ok0eu-beacon-screenshot-3-4-august-2010
http://ok1dub.cz/ok0eu/monitoring_ok0eu.htm
Dopplergrams varios:
https://www.nk7z.net/dopplergrams/
http://www.qsl.net/zl1bpu/IONO/SBSpectrum.htm
https://www.backyardastronomy.net/2018/06/16/hf-dopplergams/
http://pensacolasnapper.blogspot.com/search/label/Dopplergram
http://pensacolasnapper.blogspot.com/2012/07/cme-effect-on-40m-qrss-signal.html
http://www.qsl.net/g3cwi/pedersen.htm
http://www.qsl.net/g3cwi/propagat.htm
http://www.k5cm.com/wwv-doppler-corr.htm
http://www.users.on.net/~davroz/vk6di/pedersenrays/pedersenrays.html
http://techdoc.kvindesland.no/radio/b2/20051213183308714.pdf