SW Radiogram, 13 hours later.
Last night I copied SW Radiogram out of Pennsylvania on 9625kc and it was marginal to say the least. That station is always difficult to copy here in RI because it can sit just inside of normal HF single-hop distance. 13 hours later I caught the next broadcast, this time out of WRMI Miami, FL…
SW Radiogram under Very Poor Conditions
The earth’s atmosphere was impacted by a Coronal Mass Ejection (CME) early on November 2, 2021. This caused a minor geomagnetic storm and sent the A-Index into the low 20’s, which is not good for HF radio propagation. This is an absorption index and the effects are akin to throwing a lead blanket over the…