FCC Narrowband Compliances United States 2013

Posted on 26 January 2011 by Sara McCormick



 The Federal Communications Commission (FCC) has ruled that all radio communications equipment in the United States, operating in the VHF (150-174 MHz) and UHF (421-512 MHz) frequency bands, must conform to new narrowband requirements from the 1st of January 2013 or cease operations.

To meet these requirements, radio communications equipment in operation on, or after, this date must provide at a minimum:

  • One voice channel per 12.5kHz channel bandwidth
  • Data applications must transmit at least 4800bp/s of data per 6.25kHz channel bandwidth
  • Alternative technologies must achieve an equivalent spectral efficiency




Image: Narrowband channels enables more channels within the same spectrum




These regulations will affect all United States' governmental, commercial, public safety, transport and utilities organisations deploying UHF and VHF radio communications equipment. MiMOMax Wireless Ltd assures existing and prospective users in the United States that the complete MiMOMax narrowband UHF (420 MHz-470 MHz) product family complies with these requirements.

The MiMOMax narrowband UHF product family spectral efficiencies are as follows:

25kHz Channel Bandwidth

  •                           - Up to 320kb/s raw data rate per 25kHz channel bandwidth 
  •                            (80kb/s raw data rate equivalent per 6.25kHz channel bandwidth)
  •                           - Up to six 32kADPCM voice channels plus 36kb/s Ethernet per 25kHz channel bandwidth

 12.5kHz Channel Bandwidth

  •                           - Up to 160kbp/s raw data rate per 12.5kHz channel bandwidth 
  •                             (80kbp/s raw data rate equivalent per 6.25kHz channel bandwidth)
  •                           - Up to three 32kADPCM voice channels plus 2kb/s Ethernet per 25kHz channel bandwidth





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