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业余电台通信常用英语简语-U |
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| 缩语 | 原词 | 含义 |
| U | YOU | 你 |
| U | Up | 向上 |
| UFB | Ultra fine business | |
| UHF | ULTRA HIGH FREQUENCY | 特高频(300-3000) |
| UNSTDI | Unsteady | 不稳定的 |
| UP | UPWARD IN FREQUENCY | 调高频率 |
| UR | YOUR | 你的 |
| UR | YOUR ARE | 你是 |
| URS | YOURS | 你们的 |
| USB | UPPER SIDEBAND | 上边带 |
| UTC | UNIVERSAL COORDINATED TIME | 世界协调时 |