FT K2 Drone Control Antenna, 730–930 MHz

The K2 730–930 MHz wideband directional antenna (2 dBi) for ExpressLRS and Gemini mode ensures stable connectivity and optimal data rates.

K-2 Antenna – 730–930 MHz Omnidirectional Control Antenna

1. General Description

The K-2 antenna is a broadband omnidirectional antenna based on the Pistolkors antenna design. It is intended for use in communication systems of unmanned aerial vehicles (UAVs) and ground stations. The design consists of a brass conductor and a coaxial feeder, ensuring stable electrical characteristics and mechanical reliability.

2. Frequency Range and Gain

• Frequency range: 730–930 MHz

• Gain: 2.0 ± 0.5 dBi

3. Electrical Parameters

Parameter Value
VSWR ≤ 1.5
Polarization Linear
Impedance 50 Ω
Maximum Input Power 20 W

4. Angular Characteristics
• Beam pattern: omnidirectional in the horizontal plane
• Vertical radiation angle: ~65°

5. Mechanical Characteristics

Parameter Value
Radiator Material Brass wire Ø 2 mm
Radiator Length 365 mm
Mounting Material (PLA/ABS) thermoplastic housing
Feeder Length 160 mm
Weight ~35 g
Connector MHF IPEX U.FL

6. Operating conditions

• Temperature range: –40 °C … +70 °C

• Moisture resistance: protected with heat-shrink tubing and sealant

• Application: outdoor and indoor installation

7. Compatibility

The antenna can be used in:

• FPV control and data transmission systems (868 MHz)

• Telemetry stations and base stations

• UAV control at 868 MHz frequencies

8. Applications

• Communication channels for unmanned aerial vehicles

• Ground control stations

• Telemetry and monitoring systems

9. Dimensions and Appearance

Below are images of the K-2 antenna and test results:

10. Measurement Results

The results of simulations and measurements of the K-2 antenna confirm

Frequency, GHz Gain, dBi Main Beam Width (3 dB)
0.85 2.67 82.7°
0.99 2.80 80.5°

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