如题 [upl-image-preview url=https://storage.hamcq.cn/2024-11-22/1732236570-855542-20241122084711.png] [upl-image-preview url=https://storage.hamcq.cn/2024-11-22/1732236570-725463-20241122084650.png] [upl-image-preview url=https://storage.hamcq.cn/2024-11-22/1732236570-530819-20241122084624.png]

看起来有点类似DK7ZB设计的U5V4天线做过两只，性能是可以的打卫星足够[upl-image-preview url=https://storage.hamcq.cn/2024-11-22/1732243340-325521-45-el.jpg]

@"bg7xwf"#p42230 请教一下，这个需要做匹配吗？需要的话什么方式好呢？

请教一下。设计短波天线怎么设计。。。。例如3单元2波段。。。。或者4单元2波段，，，，3单元1波段，，这个振子长度怎么来计算的。X1.Y1.Z1 这些数怎么计算的。。。。谢谢。

@"BI1MXY"#p42258 这个是50欧的天线，不用额外匹配

@"[未知用户]"#p42361 好的，谢谢

@"BD3PZF"#p42356 还在uv段徘徊，还没进阶短波八木。😂有软件的教程，可以先看看

@"bg7xwf"#p42361 那您发的那个图片的盒子就是防水作用吗？里边就直接给激励单元馈电是吗？

@"BI1MXY"#p42384 软件教程。发一个出来。学习学习

@"BD3PZF"#p42500 https://www.hellocq.net/forum/read.php?tid=364055

I'm a beginner, and I've simulated a U5V4 dual-element Yagi antenna using MMANA-GAL. Could some experienced users please provide guidance?

BI1MXY

As the title suggests.

bg7xwf

It appears to be similar to the U5V4 antenna designed by DK7ZB.
I've made two of them, and their performance is acceptable.
Sufficient satellite communication.

BI1MXY

bg7xwf Could you please advise me on whether matching is required? If so, what method would be best?

bg7xwf

BI1MXY This is a €50 antenna that doesn't require any additional matching.

BD3PZF

I would like to ask for your advice. How should a shortwave antenna be designed? For example, a 3-element, dual-band antenna or a 4-element, dual-band antenna, or a 3-element, single-band antenna. How do you calculate the length of the resonant circuit (X1, Y1, Z1)? Thank you.

BI1MXY

BD3PZF Still operating in the UV band and haven't yet progressed to a shortwave Yagi antenna.😂There are software tutorials available; you can check them out first.

BI1MXY

bg7xwf So, does the box in the image you sent have a waterproof function? And does it directly provide power to the excitation unit?

BD3PZF

BI1MXY Software tutorial. Release one. Learn, learn.

BI1MXY

BD3PZF https://www.hellocq.net/forum/read.php?tid=364055

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