Cover Letter Requesting Class II Permissive Change

FCC ID: SWX-AF5U

Cover Letter(s)

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FCCID_2289307

  Date:2014/6/9     Federal  Communications  Commission   445  12th  Street,  SW   Downers  Grove,  IL  60515     RE:  Request  for  Performance  Equivalency     In  reference  to  the  application  under  FCC  ID:  SWX-­‐AF5U,  and  pursuant  to  Code  of   Federal  Regulation  47  Part  15  of  the  Commission’s  Rules,  The  Applicant  hereby  requests   the  use  of  approved  FCC  ID:  SWX-­‐AF5  data  for  the  additional  bandwidths  of  30MHz,  be   applied  to  the  AF5U  product  for  the  additional  bandwidths.     The  airFiber  AF5  and  AF5U  models  are  identical  in  construction  with  the  exception  of   two  filter  components.    The  two  components  are  from  the  same  manufacturer,  share   identical  physical  dimensions  and  have  similar  performance,  varying  only  in  the  effective   channel  selectivity.  The  AF5U  filters  support  a  500  MHz  range  of  radio  operation  from  5   700  to  6  200  MHz,  whereas  the  AF5  support  a  range  of  5  400  to  5  900  MHz.  Note  that   the  pass  bands  of  these  filters  overlap  in  the  5  700  to  5  900  MHz  band,  where  they   exhibit  equivalent  performance  characteristics.       For  50  MHz  channel  bandwidth  operation,  both  the  AF5U  and  the  AF5  products  have   been  tested  to  demonstrate  compliance  to  Federal  Regulation  47  Part  15  of  the   Commission  yielding  similar  results.    Because  of  the  close  similarity  of  the  AF5  and  AF5U   products,  Ubiquiti  Networks  asserts  that  the  data  collected  to  demonstrate  compliance   to  the  standard  in  the  5  725  MHz  to  5  875  MHZ  band  for  10  MHz,  20  MHz  and  40  MHZ   bandwidth  operation  for  AF5  product  is  representative  of  the  performance  of  the  AF5U   radio  for  30  MHZ  bandwidth  operation  in  the  5  725  MHz  to  5  875  MHZ  band.    Ubiquiti   Networks  is  therefore  requesting  that  the  AF5  data  submitted  to  demonstrate   compliance  to  the  standard  for  30  MHZ  bandwidth  operation  be  accepted  as  also   demonstrating  compliance  of  the  AF5U  product  due  to  the  fact  that  the  two  products   have  equivalent  software  and  hardware  functionality  in  the  5  725  MHz  to  5  875  MHz   band  of  operation.     Sincerely,     Ubiquiti  Networks   Compliance  Manager     2580 Orchard Parkway • San Jose, CA 95131 • www.ubnt.com


Document Created: 0470-06-06 00:00:00
Document Modified: 0470-06-06 00:00:00
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