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 SEPARATE  STATEMENT  OF  CHAIRMAN  MICHAEL  K.  POWELL 
 Re:  Establishment  of  Interference  Temperature  Metric  to  Quantify  and  Manage  Interference  and  to  Expand  Available  Unlicensed  Operation  in  the  Fixed,  Mobile  and  Satellite 
 Frequency  Bands;  ET  Docket  No.  03-  237. 
 The  introduction  of  a  new  “interference  temperature”  model  has  the  potential  to  tremendously  improve  radio  spectrum  management.  Rather  than  assess  interference  based  solely 
 on  transmitter  operations,  the  interference  temperature  model  introduced  in  the  Commission’s  Spectrum  Policy  Task  Force  Report  takes  into  account  the  cumulative  effects  of  all  undesired 
 radio  frequency  energy.  The  marketplace  demands  for  spectrum  require  that  we  explore  new  ways  to  use  this  resource  more  efficiently. 


 The  Notice  of  Inquiry  seeks  comment  on  various  technological  factors  and  the  process  for  managing  the  transition  to  a  new  interference  temperature  paradigm.  The  Notice  of  Proposed 
 Rulemaking  seeks  comments  on  technical  rules  that  would  establish  proper  limits  and  procedures  for  assessing  interference  temperature.  Moreover,  the  NPRM  proposes  to  begin  experimenting 
 with  the  interference  temperature  approach  on  a  limited  basis  in  select  frequency  bands  and  recommends  imposing  restrictions  on  unlicensed  devices  that  would  include  limiting  the 
 transmitter  output  power  and  requirements  to  use  transmit  power  control  (TPC)  and  dynamic  frequency  selection  (DFS). 


 I  fully  support  consideration  of  this  new  approach  to  interference  control  and  spectrum  management.  It  promises  to  promote  more  efficient  use  of  spectrum  and  encourage  new  and 
 innovative  uses  of  this  important  resource  for  the  benefit  of  the  American  public. 
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