![]() It requires you to turn a knob on the antenna to tune when changing bands. ![]() The smallest and second most efficient antenna is the magnetic Alpha Loop. This antenna requires you shorten or lengthen the Telescopic Elements with Tuning from one band to another. The most efficient and largest antenna is the HexTenna antenna. The FMJ, our HexTenna, and also the Alpha Loop all have the best HF antenna DX and NVS signal patterns. This is why our Alpha Antenna Loop, HexTenna, or EMCOMM systems are best when the horizons are obstructed. Conversely, a site that where horizons are not obstructed provide opportunity to directional signals to enhance DX. The trees, however, produce significant obstacles between a the antenna and the horizon. ![]() ![]() This is because DX characteristics often rely on a low take-off angle to the horizon. This is because directly above the antenna the trees provide less of an obstacle, enabling NVIS to still propagate. We also know that the take off angles needed for DX is significantly impacted in the same heavily wooded areas. This is regardless of whether the antenna is placed in a relatively clear area or in a heavily wooded area. HF Antenna that exhibit primarily NVIS characteristics will work best for Regional Communications. How to choose the best HF Antenna for Portable, Mobile, or Base stations Whether your obstacles are trees, buildings, operating indoors, or something else HERE IS HOW TO choose an antenna that will work in your physical environment.
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