Narrow band 10mW professional multi channel transmitter 70TX-T

The synthesizer controlled FM transmitter 70TX-T is an absolut high end solution with an excellent performance / price relation in the 10mW class. The small sized module is completely conform to EN 300113. A wide voltage range and its low power consumption combined with the small size makes the module ideal for portable and mobile applications.

Available for a wide frequency range, primarely for the european ISM band from 433.05 to 434.79 Mhz, the modul allows an operation on 139 radio channels, each 12.5 KHz apart. The module is also available for the frequency range from 400 to 550 MHz.

The internal microcontroller converts an external 8 bit wide information into a serial data stream for the synthesizer frequency adjustment. No complicate programming is necessary.

The integrated standby function allows a very short startup time if needed.

The combination with our receiver module 70RX-T offers the user a perfect radio system with very long distance communication at simplex. Together with our remote control unit FSM24 you can reach 1500 m and more at free sight.


  • Narrow band multi channel transmitter
  • with professional licence EN 300113
  • Up to 256 channels
  • 10mW output power
  • Typical range 2000m
  • Small size
  • Low current consumption
  • Data rate DC - 5kHz (up to 9600 Bd)
  • Suitable for analog and digital data
  • Compliance to R&TTE ( 99/5/EG )


  • Remote control systems
  • Data communication
  • Industrial applications
  • Telemetry systems
  • Alarm systems
  • Security systems
Transmitter 70TX-T with SMA plug
Sender 70TX-T1 Antenne
Transmitter 70TX-T with SMA plug
Sender 70TX-T1 Buchse


Communication Simplex
Frequency range 433.0625 – 434.7875 MHz     ( 12.5 / 25 KHz spacing )
Optional frequency range 400 – 550 MHz    spacing according to customer wishes
Number of channels 139 at ISM, else up to 256
Output power 10mW at 50 Ω
Modulation FM narrow band
Modulation DC – 5 kHz ( up to 9600Bd )
Deviation ± 2.4 kHz ( ± 100 Hz )    at 5Vpp
Temperature range -25°C  -  +70°C
Supply voltage 5 - 11 V    max. 4.8 - 12.0 V
Supply current 75mA (+-4mA)
Startup Time < 20 ms ( Power On )    < 4ms ( Standby)
Dimensions 51.8 x 31.6 x 14.7 mm   with lashes 61.8 x 31.6 x 14.7 mm
Weight 20 g
Material stainless steel with M3 mounting lashes
Antenna connector SMA    optional SMB or MCX
Approvals R&TTE ( EN 300113 )     Europe( 433.0625 – 434.7875 MHz )

Data sheets 70TX-T (10mW, multi channel) ---> replaced by 70TX-T1

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