How to Choose the Right Swiftlink Video Transmission System
The Airmobi Swiftlink series of video/data transmission modules is designed for long-range drone communications, offering various models with ranges from ~60 km up to 300 km. When selecting a Swiftlink system for industrial or hobby UAV use, key technical factors include transmission range, latency, bandwidth, encryption, antenna design, and overall durability. We’ll explore each criterion and compare the P33, P37, P40, P43, and P46 models to help you make an informed choice.
Transmission Range
For long-distance drone operations, range is paramount. Swiftlink systems use 1.4 GHz TDD radio links and offer impressive line-of-sight ranges. All models use high-gain directional antennas for maximum distance. For example, the Swiftlink P33 (2W) reaches over 60 km with a directional antenna, while the P37 (5W) covers up to ~100 km. Higher-power models extend this further: the P40 (10W) can exceed 150 km, the P43 (20W) up to 200 km, and the P46 (40W) up to 300 km. Omni-directional antennas yield shorter ranges (e.g. ~30 km for P33, ~60–100 km for P37–P40). When choosing, match the model’s directional range to your mission (e.g. P37 or P40 for 100–150 km, P43/P46 for ultra-long-range).
Low Latency
For real-time control and video feed, latency (end-to-end delay) is critical. All Swiftlink models are built on FPGA-based transceiver technology with advanced error correction, yielding very low latency. In practice, transmission delay is around 10 ms for each model. This sub-10 ms latency ensures smooth live video and responsive control links, which is essential for piloting and critical monitoring tasks.
Bandwidth & Data Rate
Channel bandwidth determines maximum video quality. Swiftlink radios use up to 10 MHz bandwidth, supporting high-definition video and telemetry. The P33/P37 deliver up to ~17 Mbps, while the P40 offers ~16 Mbps. The P43/P46 use similar channels with up to ~15 Mbps. All support H.264/H.265 video compression and dual network ports (for video and control). Higher throughput models (P43/P46) offer similar Mbps rates but improved link margin for very long distances.
Encryption & Security
Secure transmission is vital if your drone mission involves sensitive data. The P46 implements AES-256 encryption for communication. When choosing, verify whether the system offers encryption or proprietary secure protocols to protect your link from interception or interference.
Antenna Types
Swiftlink kits include both omni and directional antennas. Omni-directional (wide-beam) antennas are lighter and used for moderate ranges. Directional antennas (e.g. fiberglass parabolic reflectors) extend range dramatically. All models come with matched antenna sets (two airborne and two ground units). Ensure your system has the antenna type appropriate for your mission: omni for flexible orientation, directional for max distance. Consider antenna durability (rigid fiberglass) and mounting options provided in each kit.
Durability & Build
Industrial drones need rugged gear. Swiftlink units feature solid aluminum heatsink enclosures and wide temperature tolerance. The P33/P37 operate from –40°C to +75°C, and the high-power P40/P43/P46 handle –40°C to +65°C. All units are fan-cooled for reliable long-term use, with robust DC power connectors and weather-resistant casings.
Model Comparison Table
| Model | TX Power | Max Range | Data Rate | Encryption |
|---|---|---|---|---|
| P33 | 2W | 60 km | ~17 Mbps | No |
| P37 | 5W | 100 km | ~17 Mbps | No |
| P40 | 10W | 150 km | ~16 Mbps | No |
| P43 | 20W | 200 km | ~15 Mbps | No |
| P46 | 40W | 300 km | ~15 Mbps | AES-256 |
Explore the full lineup here: Airmobi Video & Data Links
