A Possible Precursor to Good Propagation on 160m

A Possible Precursor to Good Propagation on 160m

this article examines how geomagnetic activity influences 160 meter radio propagation k9la analyzes observations of enhanced signals preceding k index increases modeling shows that as ionospheric electric fields rise from 0 to 75 mv meter during early geomagnetic storms they create an electron density valley above the e region enabling signal ducting between the e and f regions this effect vanishes at higher field strengths 100 mv meter the phen…