##### 



Exhibit 4.8
    Initial Principal Amount: $6,000,000
 SECURED NOTE
DUE MARCH 13, 2009
 Note Notes Other Notes Company
 Holder Maturity Date
 Definitions




---



##### 



Change of Control
     Indebtedness
 Intellectual Property Security Agreement
 Note Register
 Original Issue Date
 Permitted Liens
 Purchase Agreement
 Receivables Facility
 2




---



##### 



SVB Facility
 SVB
  Payment of Interest Interest
Payment Date
 Interest Calculations. Note Register
 Prepayment
 Security Interest Intellectual Property Security Agreement
 3




---



##### 



Registration of Transfers and Exchanges
 Different Denominations
 Investment Representations
 Reliance on Note Register
 Negative Covenants
   4




---



##### 



de minimis
   Events of Default
 Event of Default
     5




---



##### 



Remedies Upon Event of Default
 6




---



##### 



Miscellaneous
 Notices
 Absolute Obligation pari passu
 Lost or Mutilated Note
 Governing Law
 7




---



##### 



New York Courts
 Waiver
 Severability
 Next Business Day
 Headings
 8




---



##### 



No Usury Maximum Rate
 Pro Rata Prepayment
 9




---



##### 



TELECOMMUNICATION SYSTEMS, INC.By:
    /s/ Thomas M. Brandt, Jr.Name:
    Thomas M. Brandt, Jr.Title:
    Senior Vice President and Chief Financial Officer




---



##### 



Initial Principal Amount: $346,500
 SECURED NOTE
DUE MARCH 13, 2009
 Note Notes Other Notes Company
 Holder Maturity Date
 Definitions




---



##### 



Change of Control
     Indebtedness
 Intellectual Property Security Agreement
 Note Register
 Original Issue Date
 Permitted Liens
 Purchase Agreement
 Receivables Facility
 2




---



##### 



SVB Facility
 SVB
  Payment of Interest Interest
Payment Date
 Interest Calculations. Note Register
 Prepayment
 Security Interest Intellectual Property Security Agreement
 3




---



##### 



Registration of Transfers and Exchanges
 Different Denominations
 Investment Representations
 Reliance on Note Register
 Negative Covenants
   4




---



##### 



de minimis
   Events of Default
 Event of Default
     5




---



##### 



Remedies Upon Event of Default
 6




---



##### 



Miscellaneous
 Notices
 Absolute Obligation pari passu
 Lost or Mutilated Note
 Governing Law
 7




---



##### 



New York Courts
 Waiver
 Severability
 Next Business Day
 Headings
 8




---



##### 



No Usury Maximum Rate
 Pro Rata Prepayment
 9




---



##### 



TELECOMMUNICATION SYSTEMS, INC./s/ Thomas M. Brandt, Jr.Name: Thomas M. Brandt, Jr.Title: Senior Vice President and Chief Financial Officer




---



##### 



Initial Principal Amount: $214,500
 SECURED NOTE
DUE MARCH 13, 2009
 Note Notes Other Notes Company
 Holder Maturity Date
 Definitions




---



##### 



Change of Control
     Indebtedness
 Intellectual Property Security Agreement
 Note Register
 Original Issue Date
 Permitted Liens
 Purchase Agreement
 Receivables Facility
 2




---



##### 



SVB Facility
 SVB
  Payment of Interest Interest
Payment Date
 Interest Calculations. Note Register
 Prepayment
 Security Interest Intellectual Property Security Agreement
 3




---



##### 



Registration of Transfers and Exchanges
 Different Denominations
 Investment Representations
 Reliance on Note Register
 Negative Covenants
   4




---



##### 



de minimis
   Events of Default
 Event of Default
     5




---



##### 



Remedies Upon Event of Default
 6




---



##### 



Miscellaneous
 Notices
 Absolute Obligation pari passu
 Lost or Mutilated Note
 Governing Law
 7




---



##### 



New York Courts
 Waiver
 Severability
 Next Business Day
 Headings
 8




---



##### 



No Usury Maximum Rate
 Pro Rata Prepayment
 9




---



##### 



TELECOMMUNICATION SYSTEMS, INC./s/ Thomas M. Brandt, Jr.Name: Thomas M. Brandt, Jr.Title: Senior Vice President and Chief Financial Officer




---



##### 



Initial Principal Amount: $1,683,000
 SECURED NOTE
DUE MARCH 13, 2009
 Note Notes Other Notes Company
 Holder Maturity Date
 Definitions




---



##### 



Change of Control
     Indebtedness
 Intellectual Property Security Agreement
 Note Register
 Original Issue Date
 Permitted Liens
 Purchase Agreement
 Receivables Facility
 2




---



##### 



SVB Facility
 SVB
 Interest
 Payment of Interest Interest
Payment Date
 Interest Calculations. Note Register
 Prepayment
 Security Interest Intellectual Property Security Agreement
 3




---



##### 



Registration of Transfers and Exchanges
 Different Denominations
 Investment Representations
 Reliance on Note Register
 Negative Covenants
   4




---



##### 



de minimis
   Events of Default
 Event of Default
     5




---



##### 



Remedies Upon Event of Default
 6




---



##### 



Miscellaneous
 Notices
 Absolute Obligation pari passu
 Lost or Mutilated Note
 Governing Law
 7




---



##### 



New York Courts
 Waiver
 Severability
 Next Business Day
 Headings
 8




---



##### 



No Usury Maximum Rate
 Pro Rata Prepayment
 9




---



##### 



TELECOMMUNICATION SYSTEMS, INC./s/ Thomas M. Brandt, Jr.Name: Thomas M. Brandt, Jr.Title: Senior Vice President and Chief Financial Officer




---



##### 



Initial Principal Amount: $102,500
 SECURED NOTE
DUE MARCH 13, 2009
 Note Notes Other Notes Company
 Holder Maturity Date
 Definitions




---



##### 



Change of Control
     Indebtedness
 Intellectual Property Security Agreement
 Note Register
 Original Issue Date
 Permitted Liens
 Purchase Agreement
 Receivables Facility
 2




---



##### 



SVB Facility
 SVB
 Interest
 Payment of Interest Interest
Payment Date
 Interest Calculations. Note Register
 Prepayment
 Security Interest Intellectual Property Security Agreement
 3




---



##### 



Registration of Transfers and Exchanges
 Different Denominations
 Investment Representations
 Reliance on Note Register
 Negative Covenants
   4




---



##### 



de minimis
   Events of Default
 Event of Default
     5




---



##### 



Remedies Upon Event of Default
 6




---



##### 



Miscellaneous
 Notices
 Absolute Obligation pari passu
 Lost or Mutilated Note
 Governing Law
 7




---



##### 



New York Courts
 Waiver
 Severability
 Next Business Day
 Headings
 8




---



##### 



No Usury Maximum Rate
 Pro Rata Prepayment
 9




---



##### 



TELECOMMUNICATION SYSTEMS, INC./s/ Thomas M. Brandt, Jr.Name: Thomas M. Brandt, Jr.Title: Senior Vice President and Chief Financial Officer




---



##### 



Initial Principal Amount: $616,400
 SECURED NOTE
DUE MARCH 13, 2009
 Note Notes Other Notes Company
 Holder Maturity Date
 Definitions




---



##### 



Change of Control
     Indebtedness
 Intellectual Property Security Agreement
 Note Register
 Original Issue Date
 Permitted Liens
 Purchase Agreement
 Receivables Facility
 2




---



##### 



SVB Facility
 SVB
 Interest
 Payment of Interest Interest
Payment Date
 Interest Calculations. Note Register
 Prepayment
 Security Interest Intellectual Property Security Agreement
 3




---



##### 



Registration of Transfers and Exchanges
 Different Denominations
 Investment Representations
 Reliance on Note Register
 Negative Covenants
   4




---



##### 



de minimis
   Events of Default
 Event of Default
     5




---



##### 



Remedies Upon Event of Default
 6




---



##### 



Miscellaneous
 Notices
 Absolute Obligation pari passu
 Lost or Mutilated Note
 Governing Law
 7




---



##### 



New York Courts
 Waiver
 Severability
 Next Business Day
 Headings
 8




---



##### 



No Usury Maximum Rate
 Pro Rata Prepayment
 9




---



##### 



TELECOMMUNICATION SYSTEMS, INC./s/ Thomas M. Brandt, Jr.Name: Thomas M. Brandt, Jr.Title: Senior Vice President and Chief Financial Officer




---



##### 



Initial Principal Amount: $107,900
 SECURED NOTE
DUE MARCH 13, 2009
 Note Notes Other Notes Company
 Holder Maturity Date
 Definitions




---



##### 



Change of Control
     Indebtedness
 Intellectual Property Security Agreement
 Note Register
 Original Issue Date
 Permitted Liens
 Purchase Agreement
 Receivables Facility
 2




---



##### 



SVB Facility
 SVB
 Interest
 Payment of Interest Interest
Payment Date
 Interest Calculations. Note Register
 Prepayment
 Security Interest Intellectual Property Security Agreement
 3




---



##### 



Registration of Transfers and Exchanges
 Different Denominations
 Investment Representations
 Reliance on Note Register
 Negative Covenants
   4




---



##### 



de minimis
   Events of Default
 Event of Default
     5




---



##### 



Remedies Upon Event of Default
 6




---



##### 



Miscellaneous
 Notices
 Absolute Obligation pari passu
 Lost or Mutilated Note
 Governing Law
 7




---



##### 



New York Courts
 Waiver
 Severability
 Next Business Day
 Headings
 8




---



##### 



No Usury Maximum Rate
 Pro Rata Prepayment
 9




---



##### 



TELECOMMUNICATION SYSTEMS, INC./s/ Thomas M. Brandt, Jr.Name: Thomas M. Brandt, Jr.Title: Senior Vice President and Chief Financial Officer




---



##### 



Initial Principal Amount: $929,200
 SECURED NOTE
DUE MARCH 13, 2009
 Note Notes Other Notes Company
 Holder Maturity Date
 Definitions




---



##### 



Change of Control
     Indebtedness
 Intellectual Property Security Agreement
 Note Register
 Original Issue Date
 Permitted Liens
 Purchase Agreement
 Receivables Facility
 2




---



##### 



SVB Facility
 SVB
 Interest
 Payment of Interest Interest
Payment Date
 Interest Calculations. Note Register
 Prepayment
 Security Interest Intellectual Property Security Agreement
 3




---



##### 



Registration of Transfers and Exchanges
 Different Denominations
 Investment Representations
 Reliance on Note Register
 Negative Covenants
   4




---



##### 



de minimis
   Events of Default
 Event of Default
     5




---



##### 



Remedies Upon Event of Default
 6




---



##### 



Miscellaneous
 Notices
 Absolute Obligation pari passu
 Lost or Mutilated Note
 Governing Law
 7




---



##### 



New York Courts
 Waiver
 Severability
 Next Business Day
 Headings
 8




---



##### 



No Usury Maximum Rate
 Pro Rata Prepayment
 9




---



##### 



TELECOMMUNICATION SYSTEMS, INC./s/ Thomas M. Brandt, Jr.Name: Thomas M. Brandt, Jr.Title: Senior Vice President and Chief Financial Officer