Product overview
The RadioLink Eneopterinae F121 Pro is a compact multirotor for education, pilot training and FPV racing, with a size suited to small indoor spaces. Its four modes support progression through Altitude Hold, Stabilize and Manual flight, plus switch-assisted 360-degree flips. The flight controller combines Kalman filtering with gyro, accelerometer and barometer inputs for inertial altitude hold, alongside real-time PID adaptation. Takeoff weight is 74.5g, flight time is 6–8 minutes with a Gensace battery, and flight distance is 2KM. Flight data was measured in a good flight environment; actual control depends on flight conditions.
A carbon fiber frame carries GEMFAN propellers and directly mounted clip-on guards with three-pillar supports and dual-sided, double-layer locking. The FPV transmission kit uses semi-enclosed guards; the third-person ready-to-fly kit uses fully enclosed guards. The advanced version combines a camera with 25mW video transmission. Camera settings of 15 degrees or 0 degrees accommodate FPV racing with Altitude Hold or Manual Mode. A spare output supplies a timer or LED at the battery’s current voltage, but a timer is not standard equipment. Green and blue LEDs provide night-flight orientation.
The advanced FPV ready-to-fly configuration is a complete flight package with an aircraft, T8S transmitter and FPV goggles. Its listed equipment includes three Gensace 1S 660mA Li-Po batteries, two chargers designated 1A/2A, four guards, eight 66mm GEMFAN propellers and a spare DIY shell. Cables, assembly tools, a direction LED, a hook-and-spring set, a manual and a carrying bag complete the listed package; actual contents depend on the purchased configuration. The eight-channel T8S supports Bluetooth parameter adjustment through a mobile app, while the aircraft uses a PH2.0 battery connection and supports disassembly and reassembly for practical learning.
Specifications
| Specification | Value & conditions |
|---|---|
| Manufacturer and model | RadioLink Eneopterinae F121 Pro |
| Takeoff weight | 74.5gFlight data tested in a good flight environment; actual control depends on flight conditions. |
| Flight time | 6–8 minutesGensace battery; flight data tested in a good flight environment and actual control depends on flight conditions. |
| Flight distance | 2KMFlight data tested in a good flight environment; actual control depends on flight conditions. |
| Control range | Over 2,000 metersAirborne operation; flight data tested in a good flight environment and actual control depends on flight conditions. |
| Flight modes | Altitude Hold, Stabilize, Manual and 360 Angle Flips |
| Rolling angle | Unlimited rolling angleManual Mode. |
| Flip controls | CH7 switch combined with aileron or elevator stick input360 Angle Flips Mode. |
| Altitude-hold architecture | Kalman filtering and inertial navigation using a gyro, accelerometer and barometer |
| Low-height altitude hold | Altitude hold at less than 10 centimeters heightNear-surface operation; flight data tested in a good flight environment and actual control depends on flight conditions. |
| Heading behavior | Maintains heading without a compassRudder stick is not moved. |
| Transmitter | T8S eight-channel gamepad-style controller with Bluetooth mobile-app parameter adjustment |
| Radio hardware and servo resolution | TI CC2500 RF chip, AT9S Pro gimbal assembly, NOBLE potentiometers and 0.25 µs servo resolution |
| FPV equipment | 25mW image transmission system with integrated cameraAdvanced version. |
| Camera angles | 15 degrees or 0 degreesCamera setting depends on FPV racing with Altitude Hold Mode or Manual Mode. |
| Battery connector | PH2.0 |
| Motor control | Software noise reduction |
| Frame and guard attachment | Carbon fiber frame with directly mounted propeller guards |
| Guard construction | Rectangular clip-on guards with dual-sided, double-layer locking; semi-enclosed and fully enclosed versions |
| Guard supports | Three-pillar support structure |
| Standard guard configurations | Semi-enclosed guards for the FPV transmission kit; fully enclosed guards for the Third-Person Ready-to-Fly kitFPV transmission kit and Third-Person Ready-to-Fly kit, respectively. |
| USB charger | CM120 USB LiPo charger for 1S batteries1S LiPo battery. |
| Adaptive control | Automatic nose alignment and real-time PID self-adaptationDuring flight, based on actual conditions. |
| Night-flight lighting | Green and blue LEDs |
| Accessory power output | Spare voltage output for a timer or LEDOutput voltage follows the battery’s current voltage; timer is not a standard accessory. |
| Supplied aircraft and transmitter | One F121 Pro aircraft and one T8S transmitterAdvanced Version (FPV RTF); actual package contents depend on the purchased configuration. |
| Supplied batteries and chargers | Three Gensace 1S 660mA Li-Po batteries and two battery chargers designated 1A/2AAdvanced Version (FPV RTF); actual package contents depend on the purchased configuration. |
| Supplied guards, propellers and shell | Four propeller guards, eight 66mm GEMFAN propellers and one spare DIY shellAdvanced Version (FPV RTF); actual package contents depend on the purchased configuration. |
| Supplied tools and accessories | Two receiver-to-flight-controller cables; one each of screwdriver, propeller removal tool, USB cable, night-flight direction LED, hook-and-spring set, user manual and carrying/shoulder bagAdvanced Version (FPV RTF); actual package contents depend on the purchased configuration. |
| Flight performance qualification | Actual control depends on flight conditionsFlight data measured in a good flight environment. |
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