SATELLINE-M3-TR4 is a flexible UHF data transceiver module suitable for different uses. It is an updated version of M3-TR3 module with two modulations more to give added speed to the radio interface. The radio module is easy to integrate into a host device, for instance GNSS correction data transfer in a land surveying rover or RTK base station.

  • 70 MHz tuning range (403…473 MHz)
  • Selectable channel width 12.5 and 25 kHz
  • Low power consumption


Easy configuration and wide compatibility

The radio module configuration can be done with the SATEL SL-commands or SATEL Configuration Manager -software.

SATELLINE-M3-TR4 can be added to existing systems; it is compatible with widely used SATELLINE-EASy radio modem family members and it supports also other manufacturers’ radio protocols (such as PacificCrest-4FSK, -GMSK, -FST).


Customizable for your needs

In SATELLINE-M3-TR4 the mechanical fastening and its type, interface and antenna connector types can be customized upon request. The module can be manufactured with an option for 128-bit encryption on the air interface to ensure the privacy.

Please contact us to learn more about the customization options.


Available models and product codes:

  • SATELLINE-M3-TR4 (YM7400)
  • SATELLINE-M3-TR4, without AES128 (YM7410)
  • SATELLINE-M3-TR4, without AES128, DTE connector at TOP (YM7405)
  • SATEL B1A-TR4, radio module with a motherboard, with AES128 encryption (YM7700)
  • SATEL B1A-TR4, radio module with a motherboard, without AES128 encryption (YM7705)
Frequency range 403 … 473 MHz
Tuning range 70 MHz
Channel spacing 6.25*), 12.5, 20*) and 25 kHz, software selectable

*)uses 12.5 kHz channel width

Sensitivity/Carrier power See the brochure / 1 W
Interface CMOS / UART
Data speed Radio 28800 bps / Serial 115200 bps
Power consumption RX 0.73 W / TX 4.7 W
Size/Weight 57 x 36 x 6.7 mm / 18 g
Connectors 1.27 mm pitch socket / U.FL