The Signal Report | Operator Stories, Antenna Physics, Field Reports | Greyline

From a shoreline in Iceland, under the auroral oval, Jakob TF1CB put a 28 ft Greyline vertical on the air and worked Japan, Kuwait, and Indonesia on day one. His feed system, his winter plan, and what the aurora teaches every low-band operator.

Twice a day the terminator sweeps your station and the low bands open along it. Here is the physics of greyline propagation, the field evidence, and how to be ready.