Visited product

915Mhz Radio Telemetry Kit

915Mhz Radio Telemetry Kit

Price: $8.99

Item: KIT-915

Weight: 150g

Off the shelf

RCTimer Radio Telemetry Kit 915Mhz

APM 2.5 Hardware ArduPilot Firmware Rctimer ArduFlyer Tutorials & Discussion: Click Here

The RCTimer Radio telemetry system base on 3DR Radio system and 100% compatible.

It's designed as an open source Xbee replacement radio set, offering a lower price, longer range (approx one mile) and superior performance to Xbee radios. It’s available in 915Mhz ; and in the following configurations:  serial board (for the air) and USB (for the ground).

The system provides a full-duplex link  using HopeRF's HM-TRP modules running custom, open source firmware.  Interface to the module is via standard 5V-tolerant TTL serial / FTDI USB serial.

Firmware upgrades and configuration are fully supported in the APM Mission Planner. Configuration is also possible through the 3DR Radio configurator and AT commands.



·Small size and light weight

·Available in 915MHz variants

·Receiver sensitivity to -121 dBm

·Transmit power up to 20dBm (100mW)

·Transparent serial link

·Air data rates up to 250kbps

·MAVLink protocol framing and status reporting

·Frequency hopping spread spectrum (FHSS)

·Adaptive time division multiplexing (TDM)

·Support for LBT and AFA

·Configurable duty cycle

·Built in error correcting code (can correct up to 25% data bit errors)

·Demonstrated range of several kilometers with a small omni antenna

·Can be used with a bi-directional amplifier for even more range

·Open source firmware

·AT commands for radio configuration

·RT commands for remote radio configuration

·Adaptive flow control when used with APM

·Based on the HopeRF HM-TRP radio module, featuring an SiLabs Si1000 RF microcontroller.

Datasheets of HM-TRP module:


Radio Configurator(Air module need a USB-UART tool like FTDI to configure):

Board schmatic:


         ·Dimension: Air / Ground module(no include SMA connector) : 17mx35mm / 17mmx59mm

         ·Weight: Air / Ground module: 4.6g/16.8g(include cable and antenna) / 7.2g/17g(include antenna)

Package content

         ·Air Module( 915Mhz) x 1

         ·Ground Module(915Mhz) x 1

         ·UART 4Pin cable for Air module 300mm x1

·2.5dbi Antenna for two module x2

curlyman72 : 14-09-10 12:47
Is this the same board and firmware version as this one on 3dr's web page? Also, does this come with the cases or are cases available as an add on too?
Admin  Reply: 14-09-10 16:56
Yes, same to 3DR, but our telemetry don't come the case.

Ask a question

Contact: (Can be phone, email, qq, etc.)
If you have any comments on the product or experience, please share!

Write a Review

Contact: (Can be phone, email, qq, etc.).
Powered by ShopEx v4.8.5 |Gzip disabled