Holybro 100mW / 500mW Sik Telemetry Radio Set V3
£71.90 Inc. VAT
Easily add a two-way wireless telemetry connection between your autopilot and ground station with these Sik Radios.
The Holybro Telemetry Radio Kit allows you to easily add a two-way telemetry connection between your autopilot and ground station wirelessly, providing unparalleled ease of use for viewing in-flight data, changing missions on the fly, and tuning. The 100mW version typically allows ranges of better than 300m “out of the box”, but can be extended to several kilometres with the use of a patch antenna on the ground. The radio uses open source firmware that has been specially designed to work well with MAVLink packets. The modules also feature a bootloader that permits radio firmware upgrades over the serial interface.
The radios at interchangeable between the air and ground modules and the set comes with cables to connect with the Pixhawk 4 Flight Controller and an OTG cable for connection with a tablet.
We sell 433Mhz / 915Mhz versions: 433Mhz is for the UK and most of Europe. 915Mhz for USA, Canada, Australia & New Zealand – please select as appropriate for your region.
Note: This new batch of SiK Telemetry Radio V3 does not support firmware upload via Mission Planner 1.3.75 or older. Please use Mission Planner 1.3.75.1 or newer if firmware upload is needed. QGroundControl does not support firmware upgrade for this new batch of SiK Telemetry Radio V3 at this moment.
Ground Stations:
- Mission Planner: Platform Windows, Mac OS X
- QGroundControl: Platform Windows, Mac OS X, Linux, Android and iOS
- Mission Maker for ArduPilot (a.k.a. “DroidPlanner 3” / “Tower”) Platform: Android Phones and Tablets
Mission Maker Ground Station Android App
Features:
- 100 mW / 500mW maximum output power (adjustable) -117 dBm receive sensitivity
- Open-source SIK firmware
- RP-SMA connector
- 2-way full-duplex communication through adaptive TDM UART interface
- Transparent serial link
- MAVLink protocol framing
- Frequency Hopping Spread Spectrum (FHSS) Configurable duty cycle
- Error correction corrects up to 25% of bit errors Open-source SIK firmware
- Configurable through Mission Planner & APM Planner
- FT230X is a USB to BASIC UART IC
Status LEDs
- The radios have 2 status LEDs, one red and one green:
- Green LED blinking – searching for another radio
- Green LED solid – link is established with another radio
- Red LED flashing – transmitting data
- Red LED solid – in firmware update mode
Connecting to Pixhawk 4:
Use the provided 4 pin JST-GH connector to connect the radio to your Pixhawk4’s “Telem 1” port (“Telem 2” can also be used but the default recommendation is “Telem1”).
Connecting to a PC:
Connecting the radio to your Windows PC is as simple as connecting the micro USB cable to your PC. The necessary drivers should be installed automatically and the radio will appear as a new “USB Serial Port” in the Windows Device Manager under Ports (COM & LPT). The Mission Planner’s COM Port selection drop-down should also contain the same new COM port.
- Size: 26 x 53 x 10.7mm (without antenna)
Power
- Supply voltage: 5VDC (from USB or JST-GH)
- Transmit current: 100 mA at 20dBm
- Receive current: 25 mA
- Serial interface: 3.3 V UART
Included:
- 2x radio modules with antennas
- 1x Micro-USB cable
- 1x Android OTG adapter cable
- 1x GH 6P-GH 4P cable
- 1x MLX 6P-GH 4P cable
- 2x SMA Adapter
Questions and answers of the customers
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Dear Flying Tech people, Happy holidays, I was wondering if it would make sense to buy the 500mW 433MHz radio if one aligns with european regulations. I know I have to pick that frequency but I am unsure if 500mW is beyond max allowed power (even though better range). Thank you for your answer Gratefully, Leo
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Q Dear Flying Tech people, Happy holidays, I was wondering if it would make sense to buy the 500mW ...... Read more answer nowA
Thanks for getting in touch. A 500 mW transmitter on 433 MHz is beyond what’s permitted for licence-free use in Europe. Using this output power would require an appropriate amateur radio licence and operation in line with amateur radio regulations.
SHIPPING & DELIVERY
We are based in the UK and ship to most destinations worldwide.
We dispatch orders during the times shown on our Dispatch Schedule. Orders placed before the daily dispatch cutoff will ship the same day (subject to stock availability). Orders placed after the cutoff will ship on the next scheduled dispatch day.
A confirmation email is sent once your order has been packed. If you need to amend your order, please contact us as soon as possible — once shipped, we’re unable to make changes.
We work with trusted delivery partners including Royal Mail, DHL, UPS, Fedex and Parcelforce. If you have a delivery requirement or would like to arrange collection, please get in touch.
Please fill in the fields below with the shipping destination details in order to calculate the shipping cost.
Shipping to the UK
- Order before the daily dispatch cutoff for same day dispatch.
- FREE delivery available on qualifying orders over £99 (under 1kg).
For small, low-value orders, Royal Mail First Class is our most economical option. Royal Mail Tracked 24 is the most popular choice, offering full tracking and flexible delivery options. For guaranteed next working day delivery, we recommend Royal Mail Special Delivery.
Royal Mail delivers to residential addresses Monday to Saturday, while courier services (including DHL) typically deliver Monday to Friday.
International Postage
- USA orders: Import duties and taxes are prepaid by us — no additional customs charges on delivery.
- Other destinations: Customs duties or import taxes may apply and are the responsibility of the recipient.
Smaller, lower-value orders may be sent via Airmail or tracked postal services. Economy road and express air courier options are available depending on destination. For faster delivery, we recommend express air courier services such as DHL Express, which typically deliver within 1–2 working days across Europe and a few working days for most other destinations.
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