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![]() Hello, Did you have a Dutch Girlfriend? Friesland is one of the northern provinces of the Netherlands (The Frisian capital is Leeuwarden). I live some kilometers north of Utrecht (in the middle of the Netherlands). Regarding the antenna for the JOTA. It is a simple center fed halve wave double wire dipole (to increase useful bandwidth a bit) with parallel ground wires (1.5m above ground) to reduce the losses in the soil just below the antenna. The height above ground level will be about 11m. According to simulation, the overall radiation efficiency (ground losses included) will be about 80%, so we are not going to heat the worms that much. It has maximum radiation in a vertical direction. It will be used for local (300km) traffic on 80 meters (Near Vertical Incidence Sky wave). Just 2 days ago we received permission to use a sufficiently large open area (with some domestic sheep) adjacent to the scout's building. I had some ideas for other antennas (for 40m and 2m), but without permission for using the adjacent land I don't want to spend time and money. The reason for an antenna optimized for local traffic is that most scouts are a little bit nervous, they are not used to SSB quality sound and their English is not that good for international contacts. Best Regards, |
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