SharkRF openSPOT Specifications


Key features:

  • Supports DMR (Brandmeister, DMRplus), D-Star (DCS, REF/DPlus, XRF/DExtra, XLX), System Fusion (FCS, YSFReflector) networks. More supported networks and features will be available with new firmware releases.
  • Supports cross modem modes. Talk with your C4FM radio on DMR, and with your DMR radio on System Fusion networks!
  • Very easy to use, works without a computer. No additional hardware required, works out of the box. All accessories included.
  • Web interface for configuration and monitoring.
  • HTTP, UDP/TCP API support.
  • Custom 2FSK/4FSK RF protocol support with TDMA.
  • USB powered, low energy consumption, 20mW RF output.
  • Create your own private radio network using our open source server application.
  • Runs fully embedded software written in pure C, running on an embedded real time operating system. No Linux, bulky Windows software or failing SD cards!

Designed for amateur radio 🙂

  • Connect openSPOT easily to DMR, D-Star reflectors, C4FM/System Fusion rooms, and use your radio with excellent voice quality without sync errors
  • Customize communication settings on the web interface
  • Discover how digital protocols work, and connect your own apps by sending and receiving RF frames in UDP packets
  • Create your own RF protocol by customizing RF modem settings, packet format, sync words (even with TDMA support)
  • Use single, or separate RX/TX frequencies
  • Optional erroneous packet generator module for testing other digital receivers

State of the art hardware design

  • 2 CPUs running at 100 and 120MHz
  • USB mass storage device bootloader for easy firmware upgrades
  • 4 multicolor, bright LEDs for easy real time state monitoring
  • Low power usage
  • Automatic recalibration

DMR features

  • Use openSPOT not only as a DMR hotspot, but as a base or mobile station with 2 timeslots simultaneously
  • Timeslot repeating in base station/repeater mode
  • Send and receive DMR SMS messages
  • Built-in echo service
  • Controllable with calls and custom short messages to preconfigured DMR IDs
  • Dimensions: 71 x 67 x 31 mm (without antenna)
  • Weight: 150 gr (without antenna)
  • Operating temperature range: -40 – +85 C
  • Power supply: 5 V DC through the USB port.
  • Power consumption: max. 210 mA @ 5 V (1.05 W), powered through the micro USB port
  • Antenna impedance: 50 Ω
  • RF power output: max. 13 dBm (20 mW)
  • Receive/transmit frequency range: 421-458 MHz (JP version: 430-440MHz)
  • Receiver sensitivity:
    • Gaussian 2FSK: -114 dBm @ 9.6 kbps
    • Raised Cosine 4FSK: -109 dBm @ 9.6 kbps
  • Emission designators: A1A (CW ID), F1E/F1D (D-STAR, System Fusion), FXE, FXD (DMR)