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Cohda Wireless MK5 OBU

Cohda’s fifth-generation On-Board Unit (OBU), the MK5 is a small, low-cost, rugged module that can be retrofitted to vehicles for aftermarket deployment or field trials, and can also serve as a design reference for automotive production. The MK5 exchanges data at high speeds over extended distances, providing class-leading reaction times to potential hazards and safety-critical scenarios. In challenging outdoor conditions where no line-of-sight is available, its radio performance is unmatched.


  • Dual IEEE 802.11p radio
  • Powerful processor running Cohda software applications
  • GNSS with lane-level accuracy
  • Integrated security
  • Hardware acceleration
  • Tamper-proof key storage
  • NXP chips with Cohda firmware
  • Supports DSRC (IEEE802.11p), Ethernet 100 Base-T


Bandwidth 10 MHz
Data Rates 3 – 27 Mbps
Receiver Sensitivity -99 dBm @ 3 Mbps
Environmental Operating Ranges -40°C to +85°C
Frequency Band 5.9 GHz
Max Tx Power +22 dBm (ETSI Mask C)
GNSS 2.5 m Best-In-Class Accuracy
Mobility & Multipath Tolerance Doppler Spread: 800 km/hr
Delay Spread: 1500ns
Dimensions 130 × 120 × 35 mm
Power Supply 12/24V