制作一个简单廉价的高性能1090MHz天线替换电视棒天线用于PiAware

[ECARPENTER]

需要：3mm铜柱一个，2.5mm铜柱一个（也可使用3mm铜柱），2mm纯铜漆包线50cm。
制作方法自由发挥。
当然，最好用2.5mm纯铜漆包线，不过我手劲小，绕不动。
2.5mm铜柱只是为了修正天线频率制作的误差。
用漆包线只是为了防止氧化。
虽然是为1090频率设计的天线，但如果用在接收118-136上有惊喜哦。。。

天线覆盖半径（20000ft）：200km
最大覆盖半径：350km
极限覆盖半径：450km（部分数据无法证实）
天线参数：手工做的我咋知道。。。
测试接收设备：Mode-S Beast & 1090 Puck

由于XX棒抗干扰能力较弱，特别是对4G信号无抵抗，可能效果不佳。
实际测试中，虽然4G和3G同频率，但100m内有4G基站的位置，XX棒接收ADS-B信号几乎无法识别。
3G基站天线紧贴无影响。所以使用另外两种接收设备测试。（在某荒无人烟无遮挡的海边，XX棒和以上两种设备性能几乎相同）

注：这个频率的信号遇遮挡衰减很强，实际效果受天线周围净空环境和无线电干扰影响巨大。

[antthomas]

A straight google translate with rehosted images.

http://i.imgur.com/eZ8QYW7h.jpg

Required: 3mm pillars a, 2.5mm pillars a (3mm copper cylinder can also be used), 2mm copper wire 50cm.
Production methods freely.
Of course, it is best to use 2.5mm copper wire, but my little hand strength, does not move around.
2.5mm pillars just to make the error correction frequency antenna.
Enameled just to prevent oxidation.
Although it is designed for the 1090 frequency antenna, but if there is a surprise on the receiving 118-136 oh. . .

http://i.imgur.com/tYAlQeOh.jpg

Antenna coverage radius (20000ft): 200km
The maximum coverage radius: 350km
Limit coverage radius: 450km (part of the data could not be confirmed)
Antenna parameters: handmade ye know me. . .
Test the receiving device: Mode-S Beast & 1090 Puck

Since the XX stick anti-jamming capability is weak, especially for 4G signal without resistance, may not work well.
The actual test, although the same frequency 4G and 3G, 4G base station location but within 100m, XX bar receiver ADS-B signal is almost impossible to identify.
3G base station antennas close to no effect. So there are two other receiving device testing. (At the beach of a deserted unobstructed, XX bars and more than two devices are almost the same performance)

Note: In case of blocking the signal frequency attenuation is very strong, the practical effect of antenna clearance by the surrounding environment and the tremendous impact of radio interference.