Grayline v1.2 Report a Broken Link
Title: Grayline v1.2

Desc: Grayline helps radio amateurs and shortwave listeners to benefit from "grayline propagation", a virtual line which divides the earth into the day and the night side. When one radio station is in the dusk and the opposite station is in the dawn, there is a possibility for so called "grayline propagation". At sunrise the D-layer builds up slowly and at sunset it disappears slowly again. During this change, low frequencies are...
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