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China’s Current Microwave Sub-band Codes and Frequency Division Methods.
2021-09-27
China’s Current Microwave Sub-band Code
| Band Code | Nominal Wavelength (cm) | Frequency Wavelength (cm) | Wavelength Range (cm) |
| L | 22 | 1-2 | 30-15 |
| S | 10 | 2-4 | 15-7.5 |
| C | 5 | 4-8 | 7.5-3.75 |
| X | 3 | 8-12 | 3.75-2.5 |
| Ku | 2 | 12-18 | 2.5-1.67 |
| K | 1.25 | 18-27 | 1.67-1.11 |
| Ka | 0.8 | 27-40 | 1.11-0.75 |
| U | 0.6 | 40-60 | 0.75-0.5 |
| V | 0.4 | 60-80 | 0.5-0.375 |
| W | 0.3 | 80-100 | 0.375-0.3 |
China’s Frequency Division Method
| Name | Symbol | Frequency | Band | Wavelength | Propagation characteristics | The main purpose |
| Very Low Frequency |
VLF | 3-30KHz | Ultra long wave | 1KKm-100Km | Space wave dominated | Coastal submarine communication: long-distance communication: ultra-long-distance navigation. |
| Low Frequency | LF | 30-300KHz | Long wave | 10Km-1Km | Ground wave | Transoceanic communication: medium-distance communication:underground rock formation communication: long-distance navigation. |
| Medium Frequency | MF | 0.3-3KHz | Mid-wave | 1Km-100m | Ground wave and sky wave | Marine communications: amateur radio communications; mobile communications: mid-range navigation. |
| High Frequency | HF | 3-30KHz | shortwave | 100m-10m | Sky wave and ground wave | Long-distance shortwave communication; international fixed-point communication is very. |
| Very High Frequency | VHF | 30-300KHz | Meepo | 10m-1m | Space wave | Ionospheric scattering(30-60MHz);meteor trail communication; artificial ionospheric communication(30-144MHz); communication with space flying objects; mobile communication. |
| Ultra High Frequency | UHF | 0.3-3GHz | Decimeter wave | 1m-0.1m | Space wave | Small-capacity microwave relay communication: (352-420MHz); Tropospheric scatter communication: (700-10000MHz); Medium-capacity microwave communication: (1700-2400MHz). |
| Super High Frequency | SHF | 3-30GHz | Centimeter wave | 10cm-1cm | Space wave | Large-capacity microwave relay communications: (3600-4200MHz); large-capacity microwave relay communications: (5850-8500MHz); digital communications: satellite digital communications: international maritime satellite communications(1500-1600MHz). |
| Extremely High Frequency | EHF | 30-300GHz | Millimeter wave | 10mm-1mm | Space wave | Communication when entering the atmosphere; waveguide communication. |