nvis 40m

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Invisible DX antenna for the low bands - DK5WL
Article by DK5WL describes a multi band DX antenna for the 160m 40m amateur radio ...

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40 Meter NVIS antenna
Near Vertical Incidence Skywave (NVIS) and the 40 meter Novice Sub-band.

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Portable NVIS Loop for 80m to 40m - Mark E. Cantrell (AE7TO)
A portable 15 5 foot diameter NVIS loop for 3 5 to 7 3 MHz ...

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