• SKU:


The EWRC e709TM3 FPV video transmitter is a feature packed 48channel VTx with wide input DC voltage range and selectable transmitting power of 25mW, 200mW, 600 mW and Pitmode (Off); this VTx will fit most flying requirements.

  • Clean powerup reduces interfering with other flyers
  • Pitmode reduces transmitting range to <2m allowing you to power your craft for pit work without interfering with other flyers in the air.
  • In lock mode, the e709TM3 channels are restricted and power limited to 25mW, meeting most countries legal requirements.
  • The Betaflight OSD support makes for fast and easy changing of channels, bands and power
  • Besides Band and Channel, the display indicates the frequency for easy readout
  • With Smart Audio compatibility, radios running OpenTX will have the ability to change VTx setting from their radio (LUA script and SPort enabled receivers required)
  • An integrated BEC with 5v DC output simplifies FPV cam connection and improves FPV feed quality.
  • Additional thermal protection circuitry minimises the risk of damage from overheating or antenna disconnection.


Frequency 5.8Ghz (5362 to 5945 Mhz)
Channels 48 channels (consistent power output)
Input DC supply 6 to 25 v
Output DC supply 5v (800mA)
Current Consumption @12v DC 25mW-140mA, 200mW-250mA, 600mW- 300mA
Transmission Power (selectable) 25mW/200mW/600mW/Pitmode
Channel/Band/Power Settings Betaflight OSD, PWM (channel & pitmode), button on VTx
Antenna Connection MMCX to SMA connector pigtail
Protection Feature protection from damage due to antenna disconnection or overheat
Dimension 36mm x 36mm x 7.25 mm (electronic stack mounting holes 30.5 x 30.5 mm)
Weight 8g (without antenna)

Notes : 

  • It is your responsibility to ensure that your use of EWRC products or any radio transmitting device conforms to your local regulation on radio transmitting power and frequency usage laws. Be responsible and considerate, higher transmitting power means more RX issues, a higher gain receiving antenna is better than higher transmitting power
  • Ensure that antenna is connected before powering up VTX
  • VTx must be mounted in a location with sufficient airflow


VTx Button P (Transmitting Power Selection)

  • Press and hold to change transmitting power, selection indicated by TX LEDs (red - 25 mW, red & blue -200mW, red, blue & green - 600mW)
  • Two short press to enter Pitmode (TX  red LED blinks continuously), press twice again to exit Pitmode (TX LED stays lit)

TR Tip - enter Pitmode immediately after your flight and exit just before your turn to fly, this allows you to power up for pit work and minimises interfering with other flyers, especially useful when flying in a large group

    VTX Button C (Channel and Band) 

    • Unlocking the VTx
      1.  VTx default is LOCKed mode which has restricted channel selection (display shows “L”)
      2. To UNLOCK , press and hold button C  while powering up VTx (red dot on display appears), hold till “L” or “U” appears (approx 20 secs).  Press to select.
      3. Display : “L” – LOCK, “U” – UNLOCK
    • Band and Channel selection
      1. Short press to change Channel - 1 to 8
      2. Press and hold to change Band - A, b, c, d, E, F (Band F not available if OSD/PWM wire is connected)
      3. In working mode the display cycle through Band, Channel and frequency eg E-1-5-6-5-8

    OSD, LUA Script on FrSky Taranis Radio (Smart Audio) 

    • Through a  available UART (TX pin) on flight controller. On some FC boards may only work on soft serial and requires resources remapping in CLI
    • Betaflight 3.1 or later firmware required (click here for setup manual)
    • Changing of transmitting power, bands, channels and pitmode (selections are Betaflight dependent)

      Review by Doug Hnut - click here


        VTx e709TM3

        TR Tip : A low ESR capacitor of sufficient rating (eg 1000uf/35Volts for 4S power), across the FC battery pads is helpful against electrical noise that may compromise FPV feed.