Rise Technologies unveils Hish video transmitter with up to 9.3 W output

Ukrainian company Rise Technologies has developed Hish, an analogue video transmitter whose power output and operating frequency can be adjusted while the UAV is in flight. The company disclosed the development to Defender Media.

Hish operates in the 3.0–4.0 GHz band, supports more than 100 channels and allows users to configure their own frequency grid. The device uses the Tramp and TBS SmartAudio protocols to communicate with the flight controller. Its frequency and power level can be configured through software.

Power output tailored to specific sections of the route

Hish’s output power can be adjusted according to the operator’s requirements and the operating frequency. Thanks to this adjustability, the VTX does not have to operate continuously at maximum power. The operator can maintain a lower output while the video link remains stable and increase it through the flight controller if the signal deteriorates. Once the problematic section has been cleared, the power can be reduced again.

According to the developer, during trials at an output of 25 mW, the video signal was transmitted over a distance of up to 10 km. In another test, Hish transmitted video over 80 km at maximum power while the UAV was flying at an altitude of approximately 600 m.

Another way to adapt the video link is to switch operating frequencies. The operator can configure a custom frequency grid within the 3.0–4.0 GHz band and change channels if interference occurs.

Key Hish specifications

• operating band — 3.0–4.0 GHz;
• adjustable output power — up to approximately 10 W, depending on the frequency;
• more than 100 channels;
• custom frequency-grid configuration;
• frequency and power control through the flight controller;
• weight — 68 g;
• dimensions — 55 × 35 × 35 mm.

According to Rise Technologies, Hish was developed in Ukraine and contains no Chinese components.

The system has already been integrated into approximately 300 unmanned platforms. In particular, a brigade of the Unmanned Systems Forces is fitting these video transmitters to long-range fixed-wing interceptors.