If the ECC is set to 0, there will be no correcting information for mistakes; this radio module uses a simple 16 Bit CRC to detect transmission errors. Note You cannot connect via the radios when your APM 2. The latest version of the APM firmware can use this information to automatically match telemetry streaming rate to data rate maintained by the radio module. The reason of placing duty cycle is that some parts of the world allow a higher transmission power or more frequency; your duty cycle can be used when it’s below a certain value. Join in on the forum to help make these radios even better!

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Use the included cable and plug it into the telemetry port on APM 2.

3dr Radio Wireless Telemetry Kit 915mhz Module USB for Apm2.6 Apm2.8 Pixhawk Px4

The following sections explain how to connect these to flight controllers and ground stations. LBT is a system whose radio modules needs to be monitored for a period of teleketry to see if there are other radio module signals, and then be allowed to transfer. Minimum value shall not be 0, 25 means it’s a few dB over the receiver sensitivity dBm.

You should also read SiK Radio v2which contains a more detailed user guide and jsb list. Two radio need to compute mutually the frequency hopping pattern. If you choose a radio module with the power level not supported, it will choose the highest power lever from the above table. The Master collocates with long antenna and the Slave collocates with a short antenna to reduce the load of the aircraft. The disadvantage of ECC option is that it will halve etlemetry available bandwidth, but it’s worth it in the most situations, you can maintain the reliable links within a farther range.


The radio module firmware supports MAVLink 0. Join in on the forum to help make these radios even better!

Links Forum Bazzar Blog Contact us. You should get a value of over for a standard SiK radio. You need to know the local signal level regulations of the radio module with LBT function. The largest radio module packet capacity is bytes.

The graph shows the vehicle reached a distance of nearly 3km and the link was completely maintained throughout the flight. The 3DR Radio is the easiest way to setup a telemetry connection between your flight controller and a ground station.

Take the MSI version installation for example Note: The following 3rd data can help you understand. If you open the ECC strongly recommendedthe transfer rate will be cut in half, but it is worth it, error rate will drop sharply, a more reliable connection can be received within a farther range.

Hacking the 3DR Telemetry USB transmitter. – My Robot Projects

This means that every 12 bits radio module will send 24 bits, and bit computing is to use gray code reference table. As the platform is open source, implementation can be purchased from many different sources, including ArduPilot Partners: The principle is to change receive channel slowly while rapidly change the transmission channel. A SiK Telemetry Radio is one of the easiest ways to setup a telemetry connection between your Flight Controller and a ground station.

The latest version of the APM firmware ueb use this information to automatically match telemetry streaming rate to data rate maintained by the radio module. The best place to get involved with the development or tuning of these radios is the SiK Radios forum. The radio module packet contains the RSSI Received Signal Strength Indicator information on both ends of links, which can let the ground station or the plane take action when the Signal is not good.


Connecting to APM 2. The plane used a small omni antenna, and a 8dB patch antenna on the ground station. The other factor to select the data transfer rate is TDM “synchronization time”.

This page has been accessed 65, times. Connecting the radio to an Android tablet using the L shaped micro USB cable which should have been included with the radio. On a windows 7 or higher machine, the require drivers should be automatically installed the first time you plug in the ground module but if it does not install for some reason or the ground computer telemstry running Windows XP or earlier you can get the D2XX FTDI driver here.

Please carefully check the power limit of their own EIRP Equivalent isotropically radiated powermake sure you take the antenna gain into consideration 3DR radio module is a DIY radio module components, it’s your responsibility to telemetfy sure that using it is in line with the local regulations.

The ground based radio was attached to a 3.

This article provides a basic user guide for how to connect and configure your radio. See the advanced telemstry page for detailed information on diagnosing range issues using telemetry logs.