TrueRC X-Air 5.8 Crosshair Antenna MK II (45 Deg) RHCP (RP-SMA)
by True RC

TrueRC X-Air 5.8 Crosshair Antenna MK II (45 Deg) RHCP (RP-SMA)

Elevate your FPV experience with the TrueRC X-Air 5.8 Crosshair Antenna MK II, a masterpiece of miniaturization and RF engineering designed for pilots who demand reliability and range. This MK II iteration takes the legendary performance of the original X-Air and shrinks it down to nearly a quarter of the size without compromising on gain or beamwidth.

At its core, this antenna utilizes improved Crosshair-type elements, delivering a massive 9.5-10.5 dBic gain. This high gain, combined with an exceptionally high axial ratio, allows for crystal-clear video reception even in difficult multipath environments—perfect for low-altitude flying, dense urban areas, or long-range mountain surfing. The 120-degree flight beam ensures that you don't need to keep your head perfectly still or use an antenna tracker to maintain a solid link; simply point in the general direction of your aircraft and fly with confidence.

Designed for versatility, this model features Right Hand Circular Polarization (RHCP) and an RP-SMA connector, making it compatible with a wide range of analog and digital FPV goggles, including FatShark, Skyzone, and digital receivers that utilize RP-SMA. The installed 45-degree adapter ensures the antenna sits at the perfect angle on your goggles, optimizing signal reception while maintaining a low-profile, sleek aesthetic that won't snag during transport.

Whether you are a hobbyist racing drones, a commercial sUAS operator conducting inspections, or an educational institution teaching UAV technology, the TrueRC X-Air 5.8 MK II provides the professional-grade RF link required for mission success.

Key Features:

• Compact "MK II" Design: Aerospace-grade PCB materials allow for a 32x32mm footprint, making it one of the smallest high-gain antennas available.

• Wideband Performance: Operates smoothly from 5.1GHz to 6.7GHz, covering all standard FPV channels and extended bands used by digital systems.

• Crosshair Technology: Proven phased-array element design for superior penetration through trees and buildings.

• High Efficiency: 98-99% radiation efficiency ensures no signal is wasted.

Specifications

• Frequency: 5.1 GHz – 6.7 GHz

• Gain: 9.5 – 10.5 dBic

• Polarization: RHCP (Right Hand Circular Polarization)

• Beam-width: 120 degrees

• Beam-width @-3dB: 68 degrees

• Connector: RP-SMA Male

• Dimensions: 32mm x 32mm x 16mm

• Weight: ~15g (antenna only)

• Type: Directional (Crosshair/Patch Hybrid)

What's Included

• 1x TrueRC X-Air 5.8 MK II Antenna (RHCP) 45*