Radio-relay link
 | |
|---|---|
| Frequencies | 6000 MHz,38000 MHz |
| Frequency Range | 6000 MHz - 38000 MHz |
| Mode | RAW |
| Modulation | 4FSK to 2048QAM |
| ACF | — |
| Emission Designator | — |
| Bandwidth | 3.5 MHz,800 MHz |
| Location | Worldwide |
| Short Description | A radio‑relay (microwave) link using small parabolic antennas is a short‑range, high‑capacity point‑to‑point microwave connection commonly deployed when fiber is unavailable or too expensive to build. |
| I/Q Raw Recording | — |
| Audio Sample | |
Radio-relay link transmits data through highly directional beams between two fixed antennas. Because the wavelength is short, the antennas can be physically small while still achieving strong directivity and high throughput.
Key characteristics
Typically operates in licensed microwave bands from 6 to 40 GHzGigaHertz (GHz) 10^9 Hz, with 38 GHzGigaHertz (GHz) 10^9 Hz being one of the most widely used for dense urban links. Uses compact parabolic dishes (often 20–60 cm) that provide high gain and narrow beams, reducing interference and allowing many links to coexist in the same area. Supports high data rates, often hundreds of Mbps to several Gbps depending on channel width and modulation. Range is usually 1–5 km at 38 GHzGigaHertz (GHz) 10^9 Hz due to atmospheric attenuation; lower bands (6–13 GHzGigaHertz (GHz) 10^9 Hz) can reach much farther. Requires clear line‑of‑sight. Higher frequencies are more sensitive to rain fade, so link budgets must include fade margins. Frequently used for last‑mile wireless backhaul, connecting buildings, towers, or remote sites “through the air” to the nearest operator’s network.
Typical use cases
Connecting businesses or base stations where fiber is unavailable Temporary or rapid‑deployment connectivity Redundant backup paths for critical infrastructure Urban microwave backhaul in dense operator networks
Frequencies[edit]
6 GHzGigaHertz (GHz) 10^9 Hz to 40 GHzGigaHertz (GHz) 10^9 Hz
