Product overview
The RadioLink T8FB(BT) is an eight-channel handheld radio control system for aircraft and other remotely controlled models. Its left-hand throttle layout combines two sticks with trims, reversing switches, two rotary controls and two auxiliary switches. A TI CC2500 radio chip supports FHSS operation across 67 hopping channels. The supplied configuration includes a transmitter, an R8EF receiver, a spare throttle-centering accessory, a manual and packaging. This is control hardware for integration into a model, rather than a supplied flight platform or airframe kit.
The R8EF connects to a flight controller through S-BUS or PPM while retaining corresponding PWM outputs on channels 3–8, allowing auxiliary equipment to use separate control outputs. Bluetooth supports phone-based setup, while USB provides computer configuration and firmware upgrading; firmware upgrades currently require Windows XP, 7, 8 or 10. Power input spans 4.8–18 V, with battery installation constrained by the 115 × 36 × 23.5 mm compartment. Receiver selection affects control range, and actual operating distance depends on flight conditions.
Specifications
| Specification | Value & conditions |
|---|---|
| Product identity and channels | RadioLink T8FB(BT), an eight-channel radio control transmitter with Bluetooth app configuration. |
| Radio hardware and frequency hopping | TI CC2500 radio chip; FHSS with pseudorandom hopping across 67 channels. |
| Control precision and jitter | Stated stick and servo precision: 0.25 µs; observed jitter: 0.25 µs.Oscilloscope observation; PWM signal enlarged 500 times for the stated jitter figures. |
| Maximum and typical PWM jitter | Maximum jitter: 1.84 µs; typical jitter: 0.25 µs.PWM signal enlarged 500 times. |
| Configuration and firmware support | Parameter configuration through Bluetooth on Android and Apple phones, or through USB on a computer.Bluetooth connection to a phone or USB connection to a computer. |
| Firmware upgrade operating systems | Firmware upgrading currently supports Windows 7, Windows 8, Windows 10 and Windows XP only.Firmware upgrades. |
| Mixing and model configuration | Four programmable mixes; customizable channels 5 and above; throttle and control-rate curves; unlimited model-data storage. |
| Receiver interfaces and concurrent outputs | Standard eight-channel R8EF receiver; S-BUS or PPM connection to a flight controller, with simultaneous corresponding PWM outputs on channels 3–8.Using the standard R8EF receiver. |
| Telemetry | Transmitter-voltage and RSSI display; receiver RSSI export for OSD overlay; flight-battery voltage telemetry with the specified receivers.Flight-battery voltage telemetry requires an R16F, R8FG, R8FGH or R7FG receiver and its voltage telemetry lead. |
| Power input and protection | JST battery connector; support for four AA cells, 2S–4S lithium batteries or 18650 lithium batteries; electronic reverse-polarity protection. |
| Battery compartment | Battery compartment: 115 × 36 × 23.5 mm, length × width × height.An 18650 battery supply must have a JST plug; the standard battery holder is for AA cells. |
| Input voltage | 4.8–18 V input; supports 2S–4S lithium batteries or four AA cells. |
| Current consumption and operating duration | 80 mA current consumption; 20 hours of operation with a 3S, 1800 mAh battery.The 20-hour duration uses a 3S, 1800 mAh battery. |
| Physical controls | Left-hand throttle layout; two control sticks, trims, channel-reversing switches, one two-position switch, one three-position switch, two rotary controls, antenna, handle, strap attachment and indicator lights. |
| Supplied configuration | One transmitter, one receiver, one spare throttle-centering accessory, one instruction manual and one packaging box.Bluetooth-version package; the standard receiver is R8EF. |
| R8EF control range | Ground: 500 m; airborne: 2000 m.Paired with R8EF; range figures obtained in a good flight environment, with actual range dependent on flight conditions. |
| R16F control range | Ground: 600 m; airborne: 4000 m.Paired with R16F; range figures obtained in a good flight environment, with actual range dependent on flight conditions. |
| R16SM control range | Ground: unspecified; airborne: 3000 m.Paired with R16SM; range figures obtained in a good flight environment, with actual range dependent on flight conditions. |
| R12F control range | Ground: 600 m; airborne: 4000 m.Paired with R12F; range figures obtained in a good flight environment, with actual range dependent on flight conditions. |
| R8F control range | Ground: 800 m; airborne: unspecified.Paired with R8F; range figures obtained in a good flight environment, with actual range dependent on flight conditions. |
| R8FG control range | Ground: 600 m; airborne: unspecified.Paired with R8FG; range figures obtained in a good flight environment, with actual range dependent on flight conditions. |
| R8FGH control range | Ground: 600 m; airborne: unspecified.Paired with R8FGH; range figures obtained in a good flight environment, with actual range dependent on flight conditions. |
| R8XM control range | Ground: 1100 m; airborne: 4000 m.Paired with R8XM; range figures obtained in a good flight environment, with actual range dependent on flight conditions. |
| R8FM control range | Ground: 500 m; airborne: 2000 m.Paired with R8FM; range figures obtained in a good flight environment, with actual range dependent on flight conditions. |
| R8SM control range | Ground: unspecified; airborne: 2000 m.Paired with R8SM; range figures obtained in a good flight environment, with actual range dependent on flight conditions. |
| R7FG control range | Ground: 600 m; airborne: unspecified.Paired with R7FG; range figures obtained in a good flight environment, with actual range dependent on flight conditions. |
| R6FG control range | Ground: 400 m; airborne: unspecified.Paired with R6FG; range figures obtained in a good flight environment, with actual range dependent on flight conditions. |
| R6F control range | Ground: 400 m; airborne: unspecified.Paired with R6F; range figures obtained in a good flight environment, with actual range dependent on flight conditions. |
| R4FGM control range | Ground: 400 m; airborne: unspecified.Paired with R4FGM; range figures obtained in a good flight environment, with actual range dependent on flight conditions. |
| R12FL control range | Ground: 500 m; airborne: unspecified.Paired with R12FL; range figures obtained in a good flight environment, with actual range dependent on flight conditions. |
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