A strong solar storm can cause a complete blackout of HF communication including the higher frequency bands. I was in a QSO a year or so ago and it just dropped as a solar storm hit. The noise floor dropped to zero as not even noise could propagate through the highly energized atmosphere.
Lesser solar storms can increase noise particularly on the lower bands so 80 might be unusable while 20 might just be noisy. David WJ9O > On Jan 4, 2024, at 10:25 PM, Richard Bonica via BVARC <bvarc@bvarc.org> wrote: > > > To all, > Tell me if I am wrong on this. During these solar storms, it is my > understanding to use the higher frequency rather than lower? If so, is 20 and > 40m bands a good choice? > Thank you in advance > Richard > KG5YCU > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing list > BVARC@bvarc.org > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > Publicly available archives are available here: > https://www.mail-archive.com/bvarc@bvarc.org/ ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/
