Feedline 障碍计算器
使用此免费在线工具计算种子障碍
Parallel Wire (Ladder Line)
Coaxial Cable
Common Feedline Reference
| Type | Impedance | VF | Loss @ 10m/30MHz | Use |
|---|---|---|---|---|
| RG-58 | 50 Ω | 66% | 1.4 dB | Short runs, HF |
| RG-8X | 50 Ω | 78% | 1.1 dB | Medium runs |
| RG-213 | 50 Ω | 66% | 0.7 dB | HF/VHF base |
| RG-6 | 75 Ω | 75% | 0.8 dB | Receive only |
| LMR-400 | 50 Ω | 85% | 0.4 dB | VHF/UHF base |
| 9913 | 50 Ω | 84% | 0.4 dB | Low loss runs |
| 450 Ω ladder | 450 Ω | 95% | 0.1 dB | HF antennas |
| 300 Ω twinlead | 300 Ω | 82% | 0.2 dB | TV / folded dipoles |
| Window line | 400-450 Ω | 95% | 0.05 dB | Multiband HF |
馈线阻抗计算器是一款完全在浏览器中运行的免费工具。无需注册，无需下载 - 只需打开并使用它。
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分类
🔧 Ham Radio
类型
⚡ 在浏览器中处理
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