U-band frequently used radio frequency table
| Channel number | Sending frequency | Receive frequency | |
| 1 | 434.75 | 439.75 | (Commonly used relay frequency) |
| 2 | 439.75 | 439.75 | |
| 3 | 434.75 | 434.75 | |
| 4 | 438.50 | 438.50 | (Commonly used straight hair frequency) |
| 5 | 438.55 | 438.55 Tianjin | (Commonly used straight hair frequency) |
| 6 | 433.55 | Below 438.55 Shanghai | |
| 7 | 433.55 | 433.55 | |
| 8 | 433.00 | 433.00 | |
| 9 | 434.625 | 439.625 | |
| 10 | 436.00 | 436.00 | |
| 11 | 435.05 | 435.05 | |
| 12 | 435.10 | 435.10 | |
| 13 | 435.15 | 435.15 | |
| 14 | 435.20 | 435.20 | |
| 15 | 435.25 | 435.25 | |
| 16 | 435.30 | 435.30 | |
| 17 | 435.35 | 435.35 | |
| 18 | 435.40 | 435.40 | |
| 19 | 435.50 | 435.50 | |
| 20 | 437.50 | 437.50 |
Frequently used radio frequency tables for amateur radio U-band
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