DarwinFPV Quantum 5.8GHz - 150mm RHCP u.FL

DarwinFPV Quantum is an omnidirectional antenna with RHCP polarization, a u.FL connector, for the 5.0-6.2GHz band. Thanks to its 150mm length, it is suitable for the transmitter side of freestyle and long-range drones, where the radiating element is positioned above the battery and other drone components so they do not obstruct the signal. Despite this, it weighs only 3.6g, so it will not unnecessarily burden lighter builds.

The construction is divided into a rigid black tube carrying the radiating element and a thin flexible cable terminated with a u.FL connector. The antenna is secured by its rigid section in a 3D-printed mount on the drone frame, while the cable runs to the video transmitter. Thanks to the u.FL connector, the antenna connects directly to the video transmitter, saving both weight and space. RHCP polarization is suitable for analog video transmission or HDZero.

The radiating element consists of a gold-plated PCB. PCB manufacturing ensures minimal differences in radiation performance between individual units, while the gold plating protects the radiating element against oxidation. The wide 5.0-6.2GHz band covers all common FPV channels, with the antenna achieving its highest efficiency in the most commonly used 5.6-5.8GHz band. The manufacturer states a peak radiation efficiency of 60.18%; the more transmitter power the antenna radiates, the less is converted into heat. The radiation pattern was measured in an anechoic chamber and is uniform in all directions in the horizontal plane, reducing video dropouts during fast turns, crashes, and sideways flight.

The radiating element is protected by a durable PC+ABS plastic housing that withstands hard impacts without cracking.