Federal Communications Commission
Washington, D.C. 20554
September 15, 2009
DA 09-2050
Nadja S. Sodos-Wallace
Senior Regulatory Counsel, Assistant Secretary
Clearwire Corporation
815 Connecticut Avenue, N.W., Suite 610
Washington, D.C. 20006
RE:  WT Docket No. 06-136
Request for Extension of Time
NSAC, LLC
Transition of the 2500-2690 MHz Band 
Transition Area: BTA Number 118:  Dubuque, IA
Dear Ms. Sodos-Wallace:
On March 19, 20091 and August 25, 2009,2 NSAC, LLC, a wholly-owned subsidiary of Clearwire 
Corporation (together “Clearwire”), filed Requests for Extension of Time to complete the transition for 
the Dubuque, Iowa Basic Trading Area (BTA) Number 118.  For the reasons discussed below, we grant 
Clearwire’s request and extend the deadline for completing the transition in the Dubuque, Iowa BTA 
Number 118 to March 15, 2010.
Clearwire filed its Transition Initiation Plan for the Madison BTA on June 21, 2007.3 According 
to the Commission’s Rules, Clearwire was required to complete the transition by March 20, 2009.4  
Clearwire states that it has encountered an unexpected delay in receiving delivery of the studio-to-
transmitter link equipment required to complete the transition.5
We find that Clearwire has shown good cause for an extension.  It appears that no party would be 
prejudiced by a grant of this extension, particularly since licensees can continue operating pursuant to the 
old band plan until the transition is completed.  We note that copies of the requests were served on the 
affected licensees, and no oppositions were filed.  Thus, we grant Clearwire an extension of time to 
transition the Dubuque, Iowa BTA until March 15, 2010.
Accordingly, IT IS ORDERED, pursuant to Section 4(i) of the Communications Act of 1934, as 
amended, 47 U.S.C. § 154(i), and Sections 1.46 and 27.1232(b)(1)(vi) of the Commission’s Rules, 47 
  
1 Letter from Nadja S. Sodos-Wallace, Clearwire Corporation, to Office of the Secretary, Federal Communications 
Commission, WT Docket No. 06-136 (filed Mar. 19, 2009) (Clearwire First Letter).
2 Letter from Nadja S. Sodos-Wallace, Clearwire Corporation, to Office of the Secretary, Federal Communications 
Commission, WT Docket No. 06-136 (filed Aug. 25, 2009) (Clearwire Second Letter).
3 See Initiation Plans Filed in WT Docket No. 06-136, Public Notice, 22 FCC Rcd 11651 (WTB 2007) at 3.
4 See 47 C.F.R. §§ 27.1232(a) and (b)(1)(vi).
5 Clearwire First Letter at 1; Clearwire Second Letter at 1-2.
Nadja S. Sodos-Wallace 2
C.F.R. §§ 1.46, 27.1232(b)(1)(vi) that the Requests for Extension of Time filed by NSAC, LLC on March 
19, 2009  and August 25, 2009 ARE GRANTED, and the time for completing the transition in the 
Dubuque, Iowa Basic Trading Area (BTA 118) IS EXTENDED TO March 15, 2010.
This action is taken under delegated authority pursuant to Sections 0.131 and 0.331 of the 
Commission’s Rules, 47 C.F.R. §§ 0.131, 0.331.  
Sincerely yours,
John J. Schauble
Deputy Chief, Broadband Division
Wireless Telecommunications Bureau