This is an ImmersionRC EzUHF 500mW...
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A Full Featured Long Range Systems
When 2.4GHz R/C systems run out of steam, UHF Long Range Systems (LRS) are ready for more.
The EzUHF system has proven performance, and was used by the long-range FPV experts for their famous proximity flights at > 70km range!
A Family of Receivers
The EzUHF family includes three receivers, ranging from the top of the line 8 Channel Diversity to the lightweight 4/12 Channel model. The diversity model includes twin antenna inputs for those who wish to push the limits. Two antennas angled from each other ensure that polarization mismatches, or nulls due to multi-pathing, are not an issue while barreling down a mountain pass. The 4/12 channel model, recently equipped with a tough plastic case, is ideal for use in multi-copters, where all 12 channels are sent down a single PPM cable.
The EzUHF transmitters include the best headtracker support in the hobby. A dedicated port on the transmitter (both JR, and cased versions) provides power to a headtracker-equipped headset, and accepts a PPM stream including pan, tilt, and also roll channels. These channels may be arbitrarily mixed into the RF uplink. Combine with FatShark’s state-of-the-art ‘Trinity’ headtracker module for a superb FPV experience. A 9 degree of freedom (3 axis of Gyro, 3 of Accelerometer, and 3 of Magnetometer) IMU ensures zero drift, and a natural headtracking experience.
On-Screen Uplink Status
The EzUHF system includes a simple way to show uplink ‘health’ on-screen, so that it is always visible during a flight. Using either the i2c link of the 8 channel diversity or 8 channel lite receivers, or the new ‘UPSTAT’ feature of all UHF receivers, the OSD shows the uplink status. Received Signal Strength of each antenna is shown, along with the link quality, and the dropout count. All of these are critical when it comes to pushing the limits. Uplink status is also included in the OSD’s telemetry downlink, and may be recorded along with the video.
Setting the failsafe on the EzUHF is as simple as pressing a button on the back of the transmitter during flight. Set your model into a gentle turn, drop the throttle, and set the failsafe. In the unlikely situation where the uplink is lost, the model will safely glide to the ground. On a multicopter, the UHF failsafe will trigger the flight controller’s failsafe, and for most systems will start the RTH (Return to Home).
UK Version on 459MHz
A unique feature of the EzUHF LRS when compared with the other two market leaders is the support for the 459MHz band. This band is a legal R/C modelling frequency in several countries, including the UK. The ImmersionRC tools may be used to install a 459MHz-specific version of the firmware, for the transmitter, and receiver, which not only changes the frequency band used, but the power output of the transmitter.