FCHUB-VTX w/5.8G Video Transmitter

FCHUB Series, 6~27V Input PDB w/ current sensor 184A, 40CH & 25/200/500mw switchable VTX , Traditional button+LED control, BFCMS control via FC Uart_TX, Ribbon cable connection with FC F405-OSD.

38CH firmware is preloaded now,  E4(5645) & E8(5945) are locked.

Album & Info


Spec. & Features

Specifications & Features

  • Input voltage: 6~27V(2~6S LiPo)
  • PDB: 4*30A (4*46A, 5 seconds)
  • Current Sensor: 184A (Scale 179)
  • BEC Output: 5V/1A for Camera or FC
  • VTX: 40 standard 5.8G channels, A/B/E/F/R Band
  • VTX Output Power: 25, 200, 500mW switchable
  • Traditional button+LED control of frequency and power
  • BFCMS (BFOSD & LUA Script) control via FC UART _TX
  • Video signal & TX5 are ready on FFC connected with MATEK FC F405-OSD
  • Silicon wires connection with other brands FC
  • Firmware upgradeable
  • VTX Power Consumption: 3.1W Max. @ 500mW
  • Video Input Impedance: 75 Ohm
  • Audio Subcarrier Frequency: 6.5 MHz
  • RF Connector: MMCX
  • Video Format: NTSC/PAL
  • Weight: 14g (w/ MMCX whip antenna)
  • Size: 36*45*7mm w/30.5mm mounting


  • FCHUB-VTX board
  • MMCX to SMA Female, RG178 cable 9cm
  • MMCX 5.8G whip antenna, RG178 8cm
  • Rubycon ZLH 35V/470uF Low ESR capacitor
Layout & Connections



Button, BFOSD, LUA

Default: F4 5800, 500mW




BF3.2.x Firmware

  • BFOSD   25mw—VTX  25mw
  • BFOSD 100mw—VTX  200mw
  • BFOSD 200mw—VTX  200mw
  • BFOSD 400mw—VTX  500mw
  • BFOSD 600mw—VTX  500mw

BF3.3 & latest Firmware,  Pls don’t choose 100 or 600 power level.

  • BFOSD   25mw—VTX  25mw
  • BFOSD 200mw—VTX  200mw
  • BFOSD 400mw—VTX  500mw


Frsky LUA Script

  • OpenTX 2.2.0
  • XSR_170619 firmware


Firmwares & Tool



V1.4 (Sep.24, 2017)
Fixed BFCMS control on softserial-tx

V1.5 (Nov.15, 2017)
Fixed button command bug (LEDs are turned OFF when button is pressed)

V1.9 (Mar.26, 2018)

  • Fixed power cycle issue when 100 or 600 power level is selected with BF3.3 CMS control
  • Reduce the waiting time to 5 seconds before the new setting is saved.