Model 210C Radio Modem: 450-470MHz, Ethernet and Serial


  • 10+ Mile Nominal Range
  • Digital Repeating Feature
  • Industrial Hardened Case
  • Extended Temperature  Specifications
  • Ethernet (10/100/1GHz) Port
  • Serial RS-232 Communications Port
  • User Programmable from Ethernet or USB Configuration Port

Modes of Operation

  • Ethernet Networks
    • Access Point Bridge
    • Ethernet Bridge Mode
    • Repeater Mode
    • Station Bridge Modes (Mobile)
  • Serial Networks
    • Point to Point
    • Point to Multipoint
    • Repeater Mode
    • Client Modes (Mobile)
  • Ethernet and Serial Networks
    • Legacy Product Support
    • Simultanious Ethernet and Serial Device Connections


  • AES Encryption (CCMP)
  • Temporal Key Integrity Protocol (TKIP)
  •  128/64 Bit  WEP Encryption

Model 210C 450-470MHz, Ethernet and Serial Radio Modem

Long Range Wireless Ethernet and Serial Ports

The ESTeem Model 210C long-range outdoor wireless radio modem with one Ethernet port (10/100/1G) and one independent Serial RS-232C data port is the perfect radio solution designed for the rigors of the Industrial, Public Safety, and Federal markets when the UHF band is needed for terrain coverage.  The Model 210C is a narrow band licensed radio modem with selectable Quadrature Amplitude Modulation (QAM) that delivers up to 64.8 Kbps of data rate over distances greater than 10 miles in high noise environments depending on the antenna used.  Wireless networks over large geographical areas can be a reality using the internal Digi-Repeating feature.  210C industrial radios also have a Station Bridge Mode feature so they can be used in mobile applications for roaming under a 210C RF canopy.  

Software Features

  • High Security AES Encryption. The 210C radio modem uses the high-security 128-bit AES-CCMP required in most municipal, public safety and federal applications. 
  • Network Optimization.  Networking features such as Static ARP Tables and IP Address Whitelist will allow enhanced network operation through limited bandwidth.
  • Enhanced Network Operation.  The 210C includes support for VLAN pass-through and network optimization to support enhanced network functionality.
  • Internal Digital Repeater Capability.  To extend the radio range over line-of-sight obstacles to cover large geographical areas.

Our Model 210C serial and Ethernet radios provide outstanding service covering a wide range of operation modes, including as a long range wireless bridge or as a point-to-point or point-to-multipoint serial network. Review the literature below and then contact us for the solutions to your most challenging communication applications.

All ESTeem products are designed and manufactured with pride in the United States of America.

Supporting Information

Latest 210C Firmware Version

Latest 210C Firmware Version

Current Version: 201702020830; Release Date: February 13, 2017

For instructions on how to update the modem, please contact ESTeem Customer Support at 509-735-9092 or follow the procedures in the User’s Manual. The firmware update file and instructions can be found on our FTP site.