Exhibit 4.6 XM Satellite Radio Inc. 14% SENIOR SECURED NOTES DUE 2010 SECOND SUPPLEMENTAL INDENTURE Dated as of December 23, 2002 The Bank of New YorkSupplemental Indenture • January 15th, 2003 • Xm Satellite Radio Holdings Inc • Communications services, nec • New York
Contract Type FiledJanuary 15th, 2003 Company Industry Jurisdiction
WARRANT AGREEMENT Xm Satellite Radio Holdings Inc.Warrant Agreement • January 15th, 2003 • Xm Satellite Radio Holdings Inc • Communications services, nec • New York
Contract Type FiledJanuary 15th, 2003 Company Industry Jurisdiction