COALAS::LPF-1G-16W Filter — a professional low-pass filter for TX output, designed to reduce the impact of harmonics on the video signal and improve transmission quality. The model designation COALAS::LPF-530-16W is also found in documentation, so please check the marking on the casing carefully when purchasing. Manufacturer: Coalas systems. Product category: Drone Detectors & Accessories > Communication Stations & Components.
Description and Purpose
This low-pass filter is designed for installation on the transmitting output (TX) to suppress unwanted harmonics that can degrade video transmission quality and create interference in adjacent bands. Its compact size and low weight allow the filter to be integrated into compact data and video transmission modules in UAV systems, portable transmitters, and test equipment.
Key Characteristics
- Cut-off frequency: 1 GHz
- Maximum power: 16 W
- Impedance: 50 Ohm
- Connectors: SMA
- Dimensions: 47 x 12 x 14 mm
- Weight: 10 g
Attenuation Details by Frequency
Below are typical filter attenuation values at various frequency points, obtained during testing. The AFC measurement band covers the range from 300 MHz to 6000 MHz, making the filter effective in suppressing harmonics across a wide frequency spectrum.
| Frequency | Attenuation |
|---|---|
| 1.3 GHz | ~15 dBm |
| 1.8 GHz | ~25 dBm |
| 2.4 GHz | ~40 dBm |
| 3.3 GHz | ~35 dBm |
| 4.9 GHz | ~30 dBm |
| 5.8 GHz | ~15 dBm |
Compatibility and Application
The filter has a standard 50 Ohm impedance and SMA connectors, ensuring easy integration with most transmitting modules, antenna systems, and video transmitters that use a 50-ohm line. Recommended for use in unmanned aerial vehicle systems, portable video transmitters, test equipment, and other solutions where signal quality and interference minimization are important.
Advantages
- Effective suppression of harmonics above the cut-off frequency to improve signal purity;
- Compact dimensions of 47 x 12 x 14 mm and low weight of 10 g — suitable for compact and mobile solutions;
- Supports up to 16 W of power — sufficient for most portable transmitters;
- SMA connectors for quick and reliable connection to existing circuits.
Before installation, ensure compliance with the impedance (50 Ohm) and permissible power in your specific system. If in doubt, refer to the technical documentation of the manufacturer Coalas systems or contact store specialists for optimal solution selection. Please note the possible model marking COALAS::LPF-530-16W on the casing when receiving the device.
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