Narrow band transmitter 70TX-M1

The UHF mini transmitter 70TX-M1 is one of the smallest crystal stabilized transmitter modules in its class. A wide voltage range and its low power consumption combined with the small size makes the module ideal for portable and mobile applications.

By the interesting combination of reliable technologies it was possible to design a product, putting together the advantages of frequency stable crystal oscillators and the synthesizer concept in a very small size
The 70TX-M1 transmitter is a single channel, crystal stabilized solution, available for the frequency range from 410 to 510 MHz, mainly in the european 70cm ISM band from 433,100 to 434,75 MHz.

The combination with our receiver modules 70RX-M2 or 70RX-S2 offers the user a perfect radio system with long distance communication at simplex or half-duplex. Together with our remote control unit FSM24 you can reach 2000 m and more at free sight.


  • Narrow band single channel transmitter
  • 10mW output power
  • Typical range 2000m
  • Very small size
  • Less current consumption
  • Data rate DC - 5kHz (up to 9600 Bd)
  • Suitable for analog and digital data
  • No licence required
  • Compliance to RED (2014/53/EU), EN 300220
  • FCC and Canada approvals


  • Remote control systems
  • Industrial applications
  • Telemetry systems
  • Alarms
  • Security systems
Transmitter 70TX-M1
Transmitter 70TX-M1
Transmitter 70TX-M1
Transmitter 70TX-M1


Communication Simplex
Frequency range 433.100 - 434.750 MHz    (25 kHz raster)
  optional 410 - 510 MHz
Number of channels single channel (fix)
Output power 10 mW / 10 dBm at 50 Ω
Modulation FM narrow band    (analog and digital)
Data input level 5 VPP (TTL)   
Deviation ± 2.5 kHz  (± 300 Hz)    by sinus with 5 VPP
Data rate DC - 5 kHz (up to 9600 Bd)
Temperature range -25°C . . . +75°C
Supply Voltage 4.8 - 11.5 V    (max. 4,6 - 12.0 V)
Supply Current 28 mA (± 3 mA)
Dimensions 25.7 x 23.4 x 8.8 mm  (with lashes 37.0 x 23.4 x 8.8 mm)
Weight 10.3 g
Material Stainless steel with M3 mounting holes
Antenna connector λ/4 - whip antenna (Teflon)     optional SMA-, SMB- or MCX
Approvals RED (EN 300220)  for  Europe (433.100 - 434,750 MHz)
  FCC (Part 15) for  USA (420 - 510 MHz)
  CAN  for  Canada (420 - 430 / 450 - 470 MHz)

Data sheet 70TX-M1 (10mW, single channel)

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