Powerful 50W UAV Jamming Module – 700–840MHz GaN Broadband Jammer

A Compact Answer to Low‑Band Drone Threats

The 700–840MHz band is increasingly used by long‑range UAVs for command and control, especially in rural and maritime environments where lower frequencies travel farther. The 50W UAV jamming module described here tackles this exact challenge with a GaN‑based design that packs serious punch into a tiny footprint. At just 117×58×18mm and 300 grams, this module delivers 50W (47±1dBm) of clean, broadband noise across the entire band. Built with GaN‑on‑SiC technology on a copper heat spreader, it runs cool and reliably even during prolonged missions. Whether you are protecting border perimeters, oil rigs, or mobile convoys, this jammer offers the frequency reach and power density that older LDMOS designs simply cannot match.

Why 700–840MHz Matters for Counter‑UAV

Most consumer drones operate at 2.4GHz or 5.8GHz, but professional and military‑grade UAVs often use lower UHF bands for beyond‑line‑of‑sight (BLOS) control. The 700–840MHz slice covers several international public safety and aeronautical telemetry bands, and many drone manufacturers have started adopting this range to avoid crowded ISM channels. The 50W UAV jamming module generates a high‑speed noise‑modulated signal that effectively overwhelms both narrowband and frequency‑hopping receivers in this spectrum. Its analog scan speed is factory‑set at 270kHz and can be tailored from 100 to 500kHz, giving you flexibility to match different hopping patterns. This is not a fixed‑tone blocker – it is a dynamic sweeper that keeps modern UAVs off balance.

GaN Efficiency Meets Rugged Packaging

Gallium Nitride on Silicon Carbide is the gold standard for high‑power RF amplifiers, and this 50W UAV jamming module exploits its advantages fully. The class‑AB GaN design achieves >50% typical efficiency, which means less heat and smaller power supplies. The copper‑based thermal spreader wicks heat away from the die, allowing continuous operation at 50W without active cooling in many scenarios. Input and output are both 50Ω with SMA female connectors, simplifying integration into existing antenna systems. The supply voltage range of 24–28V (nominal 28V) draws only 3.2–4.5A at full tilt – remarkably frugal for a 50W brick. This efficiency translates directly into longer battery life for portable or drone‑mounted counter‑UAS payloads.

Built‑In Noise Source and Customisation Options

Unlike modules that require an external signal generator, this unit includes a built‑in high‑speed noise‑modulation source. The modulation is broadband and flat across 700–840MHz, ensuring no gaps in coverage. For specialised applications, we offer custom variants with VCO, DDS, or SDR front‑ends – you can choose the waveform that best defeats the threat. The scan speed is adjustable via an internal trimmer, and we can preset it to your preferred value during manufacturing. This level of flexibility makes the 50W UAV jamming module suitable for both fixed installations and rapid‑deployment kits. No firmware, no boot‑up delays – just instant analog jamming when you flip the enable pin.

Protection and Status at a Glance

Three onboard LED indicators give you real‑time feedback: power‑on, over‑voltage, and over‑temperature. The 50W UAV jamming module actively monitors its internal temperature and input voltage; if either crosses a safe threshold, it reduces output to protect the GaN device. This self‑preservation feature is crucial in field environments where power quality may vary. The operating temperature range of -20 to +65°C covers most terrestrial deployments, and the compact aluminium housing with copper base ensures thermal stability. We have seen these modules survive vibration tests and extreme humidity without performance drift – a testament to their rugged construction.

Integration and Deployment Tips

Pair the 50W UAV jamming module with a broadband antenna tuned for 700–840MHz – a discone or log‑periodic design works well. Keep the RF cable short and use low‑loss coax (e.g., LMR‑400) to minimise insertion loss. The enable pin accepts +5V or floating for ON, ground for OFF, matching standard TTL logic. For high‑duty‑cycle operations, we recommend attaching a small fan to the copper heat spreader. For more insights on low‑band countermeasures, refer to this external technical paper on UHF drone communications . 

Final Thoughts

This 50W UAV jamming module offers a rare combination of high power, wide bandwidth, and miniature size – all thanks to GaN technology. Its analog noise source provides instantaneous coverage without digital latency, and the customisation options make it adaptable to evolving threat landscapes. While it is not the cheapest module on the shelf, its reliability, thermal performance, and low current draw justify the investment. If you need to neutralise low‑band UAVs effectively, this module deserves serious consideration.