自己用电木做了个正V底座，配上5.6米拉杆及1:1巴伦，架起来后发现离地1米左右驻波1.0，但随着天线高度的升高最低谐振点驻波也随之升高，5米左右驻波已经到了2点几了。随后换了支撑杆问、也尝试改变振子夹脚、也尝试不用巴伦，但问题依旧，这是怎么了，有没有老师也遇到同样的问题？怎么解决！

是的。这是水平极化（DP）天线的特点。驻波比受地面影响显著，具体高度和波段有关，也和地面类型有关（干燥还是潮湿等等）。条件允许的话升高到1/2波长的高度后再调整阻抗匹配试试

就离地一米呗短波天线的效果与天线高度无太大关系如果没啥干扰的话可以考虑或者减小两根振子的夹角

@"BH6BMJ"#p74787 这样效率太低，仰角太高，全打天上了。不过目标是近距离通信的话可以试试

Help with a problem regarding a V-type antenna.

vollen

I built a ground plane myself using copper wire, along with a 5.6-meter boom and a 1:1 balun. After setting it up, I found that the VSWR was around 1.0 at a height of about 1 meter above the ground. However, as the antenna height increased, the lowest resonant point also increased, and the VSWR reached around 2.0 at approximately 5 meters. Subsequently, I tried replacing the support pole, changing the transceiver feet, and even using the balun without it, but the problem persisted. What's going on? Has anyone else encountered this issue? How can I fix it?

BG5BJM

Yes. This is linear polarization.（DP）Antenna characteristics. The standing wave ratio is significantly affected by the ground, depending on the specific height and frequency band, as well as the type of ground (dry or wet, etc.). If possible, try raising it to a height of 1/2 wavelength before adjusting the impedance matching.

BH6BMJ

It's fine if it's one meter above ground. The effectiveness of a shortwave antenna and its height have little to do with each other. If there is no interference, you can consider it.
Or reduce the angle between the two oscillators.

BG5BJM

BH6BMJ This method is too inefficient and has a very high angle of elevation, resulting in all transmissions being directed upwards. However, if the goal is to achieve close-range communication, it might be worth trying.

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