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 PUBLIC  NOTICE  Federal  Communications  Commission  445  12th  St.,  S.  W.  Washington,  D.  C.  20554  News  Media  Information  202  /  418-  0500  Fax-  On-  Demand  202  /  418-  2830  TTY  202  /  418-  2555  Internet:  http://  www.  fcc.  gov 
 ftp.  fcc.  gov 
 REVISED 
 DA  01-  753 
 March  26,  2001 


 Comments  Requested  on  Reports  Addressing  Potential  Interference  from  Ultra-  Wideband 
 Transmission  Systems  (ET  Docket  No.  98-  153) 


 The  Commission  is  requesting  comments  on  five  reports  it  has  received  regarding  the  potential  for  ultra-wideband 
 (UWB)  transmission  systems  to  cause  harmful  interference  to  other  radio  operations.  These 
 tests  are  being  submitted  in  the  record  for  public  comment  as  part  of  our  proceeding  on  the  authorization  of 
 UWB  devices.  As  the  Commission  stated  in  its  Notice  of  Proposed  Rulemaking  in  ET  Docket  98-  153,  it 
 will  consider  the  submissions  and  public  comments  addressing  further  testing  and  analysis  before  adopting 
 final  rules. 


 On  March  5,  2001,  Qualcomm  submitted  a  report  addressing  interference  potential  to  the  operation  of 
 Personal  Communications  Services  (PCS)  telephones.  On  March  9,  2001,  Time  Domain  Inc.,  through  the 
 University  of  Texas  and  Johns  Hopkins  University,  submitted  a  report  addressing  interference  potential  to 
 Global  Positioning  System  (GPS)  receivers.  On  March  9,  the  National  Telecommunications  and 
 Information  Administration  (NTIA)  submitted  a  report  addressing  interference  potential  to  GPS  receivers. 
 On  March  21,  2001,  the  Department  of  Transportation  (DOT),  through  Stanford  University,  submitted  a 
 report  addressing  interference  potential  to  GPS  receivers.  DOT  also  submitted  an  earlier  report  on  October 
 30,  2000,  addressing  interference  to  GPS  receivers  as  part  of  its  reply  comments.  Copies  of  these 
 documents  can  be  found  on  the  Commission’s  Electronic  Comment  Filing  System  (ECFS)  at 
 www.  fcc.  gov/  e-  file/  ecfs.  html. 


 Comments  on  these  reports  shall  be  filed  by  no  later  than  April  25,  2001.  Replies  to  the  comments  shall  be 
 filed  no  later  than  May  10,  2001.  Comments  and  replies  are  to  be  filed  with  the  Commission  following  the 
 same  procedures  applicable  to  the  Notice  of  Proposed  Rule  Making  in  this  proceeding,  ET  Docket  No.  98-153. 
 Paper  copies  may  be  filed  with  the  Commission’s  Secretary,  Magalie  Roman  Salas,  Office  of  the 
 Secretary,  Federal  Communications  Commission,  445  12  th  Street,  S.  W.,  TW-  A325,  Washington,  D.  C. 
 20554.  Electronic  copies  may  be  filed  at  www.  fcc.  gov/  e-  file/  ecfs.  html.  The  full  text  of  these  reports, 
 along  with  comments  and  reply  comments,  will  be  available  on  the  ECFS  and  at  the  FCC  Reference  Center, 
 Room  TW-  A306,  445  12  th  Street,  S.  W.,  Washington,  D.  C.  20554. 
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 We  understand  that  there  may  be  additional  reports  addressing  potential  interference  from  UWB  systems  to 
 GPS  receivers  submitted  by  NTIA,  DOT  and  Rockwell  Collins  and  possibly  others.  We  will  issue  a  Public 
 Notice  seeking  comment  on  these  and  any  other  relevant  reports,  as  appropriate,  when  they  are  filed  with 
 the  Commission.  However,  in  order  to  permit  us  to  resolve  issues  raised  in  the  UWB  rule  making 
 proceeding  in  a  timely  manner  we  will  not  delay  the  process  indefinitely. 


 By  the  Acting  Chief,  Office  of  Engineering  and  Technology. 
 Office  of  Engineering  and  Technology  contact:  John  A.  Reed  at  (202)  418-  2455,  jreed@  fcc.  gov. 
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