SATEL-TR4+ is a UHF data transceiver module in a lightweight single board structure. It is designed to be integrated into a host device, e.g. to transfer GNSS correction data in a land surveying rover or RTK base station.

  • 70 MHz tuning range (403…473 MHz) and selectable channel width (12.5, 20 and 25 kHz)
  • Extended operating voltage range
  • Moderate power consumption
  • AES128 encryption support as default, AES256 as an order option
  • Polling Protocol (Contact SATEL for availability)

Easy installation and configuration

SATEL-TR4+ is supplied without a housing in PCB format with RF-shielding, facilitating installation into the customer’s own housing or into a host device. The radio module configuration can be done with the SATEL SL-commands or SATEL Configuration Manager software.

Compatible and customizable

SATEL-TR4+ is compatible with widely used SATEL radios, such as SATELLINE-M3-TR4, -EASy, -Easy Pro and SATEL-EASy+, and also with other manufacturers’ radio protocols.

SATEL GO radio modules match all the needs of OEM customers. Please contact us or our nearest distributor for various possibilities to create a customized solution for you.

Available radio module models and product codes:

  • SATEL-TR4+ with AES128 encryption support (YM7470)
  • SATEL-TR4+ without AES128 encryption support (YM7475)
  • SATEL-TR4+ with AES128 encryption support, DTE connector at TOP (YM7480)
  • SATEL-TR4+ without AES128 encryption support, DTE connector at TOP (YM7485)
  • SATEL-TR4+ OA complies with the requirements of the Dutch KAR (Korte Afstand Radio) specification for Public Transportation data communications (YM7440)


For easy assembly SATEL offers motherboards, SATEL-B2, which can be ordered separately. Three variants: horizontal 26-pin header connector, vertical 26-pin header connector or horizontal 26-pin header connector with D15 adapter.

Radio module is assembled with four screws on the mother board. Following HIROSE U.FL compatible antenna connector options are available: TNC, BNC, SMA, MCX and MMCX (in the picture is TNC).

Available motherboard packages and product codes:

  • SATEL-B2-TR4+, MP1 with AES128 encryption support, horizontal 26-pin connector (YR7470)
  • SATEL-B2-TR4+, MP1 without encryption support, horizontal 26-pin connector (YR7475)
  • SATEL-B2-TR4+, MP2 with AES128 encryption support, horizontal 26-pin connector + D15 adapter (YR7470)
  • SATEL-B2-TR4+, MP2 without encryption support, horizontal 26-pin connector + D15 adapter (YR7475)
  • SATEL-B2-TR4+, MP3 with AES128 encryption support, vertical 26-pin connector (YR7470)
  • SATEL-B2-TR4+, MP3 without encryption support, vertical 26-pin connector (YR7475)
Frequency 403…473 MHz
Tuning range 70 MHz
Channel width 12.5 kHz / 20 kHz/ 25 kHz (software selectable)
Encryption support AES128 as default / AES256 as an order option
Modulation 4FSK, 8FSK, 16FSK, GMSK *)
Power consumption, typical TX 4.8 W @1 W / RX 0.89 W
Carrier power 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1 W programmable
Size / Weight 57 x 36 x 6.9 mm / 20 g

*) Ask availability