Exhibit A

0185-EX-ST-2006 Text Documents

XM Radio Inc.

2006-03-24ELS_75186

Exhibit A

Pursuant to Section 5.61 of the Commission’s rules, XM Radio Inc. (“XM”) hereby
requests a 180-day extension of its existing Special Temporary Authority (“STA”) to test
Wireless Communications Service (“WCS”) base stations using WCS C-block (2315-2320 MHz)
and D-block (2345-2350 MHz) frequencies at the sites listed herein in the Dallas area. See File
No. 0660-EX-ST-2005 (Call Sign WB2XCA). 1 WCS Wireless License Subsidiary, LLC (“WCS
Wireless”), the licensee of these frequencies in Dallas, has consented to this experimental
operation. 2

XM’s current STA authorizing operation of these WCS base stations in the Dallas area
will expire on April 12, 2006. On this date, XM has filed for a two-year experimental license to
conduct these experimental operations pursuant to the same technical parameters listed in its
existing STA. See File No. 0141-EX-PL-2006. Pursuant to Section 5.61(b) of the Commission’s
rules, XM’s timely filed experimental license application enables XM to continue operations in
accordance with the terms and conditions of its existing STA pending disposition of the
experimental license application. 47 C.F.R. § 5.61(b).

The base stations will operate in compliance with the Commission’s rules governing
WCS base station operations, with the exception of Section 27.50(a)(1) which limits WCS base
stations to 2 kW peak equivalent isotropically radiated power (EIRP). 47 C.F.R. § 27.50(a)(1).
The base stations to be tested pursuant to this STA will operate at a maximum of 2 kW average,
rather than peak, EIRP. WCS Wireless currently has pending a request for a waiver of Section
27.50(a)(1) of the Commission’s rules to operate WCS base stations at average rather than peak
EIRP. 3 WCS Wireless previously tested base stations in the Dallas area operating at 2 kW
average rather than peak EIRP. See File No. 0205-EX-PL-2004 (Call Sign WD2XLJ). WCS
Wireless did not receive any complaints of interference during this test.

The purpose of this experimental operation is to further design, develop, and test a WCS
network in the Dallas area using base stations operating at a maximum of 2 kW average EIRP.
The tests will include field-test measurements of design techniques through measurements of

1
Minor changes to two base stations are reflected herein, neither of which will increase the
maximum emissions envelope established in the existing STA. 47 C.F.R. § 5.77. Specifically,
one site in Dallas, Texas (North 32 44 28 West 96 53 42) has been modified to reflect the use of
a directional antenna. Another site in Dallas, Texas (North 32 41 40 West 96 46 25) has been
modified to reflect a revised antenna orientation in the horizontal plane.
2
XM is the prospective transferee of the WCS licenses held by WCS Wireless. See Application,
ULS File No. 0002240823 (filed July 15, 2005). XM understands that grant of this experimental
STA request is without prejudice to the Commission’s consideration of the pending transfer
application.
3
See Wireless Telecommunications Bureau Seeks Comment on WCS Wireless, LLC Request for
Waiver of Section 27.50(a), Public Notice, DA 05-1662 (June 15, 2005). XM understands that
grant of this experimental STA request is without prejudice to the Commission’s consideration
of the pending waiver request.

installed system performance. Among other things, in-field experimental tests will allow for
validation and optimization of terrestrial signal-processing techniques. Testing will assess
channel characterization, including multi-path characteristics, to assist in establishing and
validating propagation and channel models. This experimental operation is a critical part of the
planning required to design and develop a WCS network in advance of the Commission’s July
2007 substantial service deadline for WCS licensees. See 47 C.F.R. § 27.14(a).

Document Created: 2006-03-24 18:03:47
Document Modified: 2006-03-24 18:03:47

© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC