EXHIBIT 10.8

                          TRADEMARK SECURITY AGREEMENT


     This Trademark  Security  Agreement  ("Agreement") is made this 20th day of
March,  2002,  by BLONDER  TONGUE  LABORATORIES,  INC., a Delaware  corporation,
having a mailing  address of One Jake Brown Road,  Old Bridge,  New Jersey 08857
("Borrower")  and delivered to COMMERCE BANK,  N.A.  having a mailing address of
1701 Route 70 East, Cherry Hill, New Jersey 08034 ("Lender").

                                   BACKGROUND
                                   ----------

     A. This  Agreement is being  executed  contemporaneously  with that certain
Loan and Security  Agreement  between  Borrower and Lender dated the date hereof
("Loan  Agreement"),  under  which  Borrower  is  granting  Lender a lien on and
security  interest in certain assets of Borrower  associated with or relating to
services  or  products  sold  under  Borrower's   trademarks  and  the  goodwill
associated  therewith,  and under  which  Lender is  entitled  to  foreclose  or
otherwise  deal with such  assets  under  the  terms  and  conditions  set forth
therein.  Capitalized  terms not defined herein shall have the meanings given to
such terms in the Loan Agreement.

     B. Borrower has adopted,  used and is using (or has filed  applications for
the  registration  of) the  trademarks,  servicemarks  and tradenames  listed on
Schedule  "A"  attached  hereto  and made part  hereof  (all such marks or names
hereinafter referred to as the "Trademarks").

     C. Pursuant to the Loan Agreement,  Lender is acquiring a lien on, security
interest in and a license to use the  Trademarks and the  registration  thereof,
together with all the goodwill of Borrower associated  therewith and represented
thereby,  as security for all of Borrower's  Obligations,  and Lender desires to
have  its  security  interest  in  such  Trademarks   confirmed  by  a  document
identifying  same and in such form that it may be recorded in the United  States
Patent and Trademark Office.

     NOW   THEREFORE,   with  the  foregoing   Background   hereinafter   deemed
incorporated by reference and made a part hereof,  and in  consideration  of the
premises and mutual promises herein contained,  the parties hereto, intending to
be legally bound hereby, covenant and agree as follows:

     1. In consideration of and pursuant to the terms of the Loan Agreement, and
for other good, valuable and sufficient  consideration,  the receipt of which is
hereby  acknowledged,  and to secure all of the Obligations,  Borrower grants to
Lender a lien on and security  interest in all of Borrower's  present and future
right,  title  and  interest  in and to the  Trademarks,  together  with all the
goodwill of Borrower associated with and represented by the Trademarks,  and the
registration  thereof  and the right (but not the  obligation)  to sue for past,
present and future infringements,  and the proceeds thereof, including,  without
limitation, license royalties and proceeds of infringement suits.

     2.  Borrower  hereby  covenants  and agrees to maintain the  Trademarks  as
permitted  under  applicable  law in full  force  and  effect  until  all of the
Obligations are indefeasibly paid and satisfied in full and the Revolving Credit
is terminated.



     3. Borrower represents, warrants and covenants to Lender that:

          (a) The Trademarks  are subsisting and have not been adjudged  invalid
or unenforceable;

          (b) All of the Trademarks (other than application for the registration
thereof which have been filed) are registered, valid and enforceable;

          (c)  Borrower  is the  sole and  exclusive  owner  of the  entire  and
unencumbered  right,  title and interest in and to each of the  Trademarks,  and
each of the Trademarks is free and clear of any liens,  charges and encumbrances
including,  without limitation,  pledges,  assignments,  licenses (other than to
Surety,  Borrower  and Lender  hereunder)  and  covenants by Borrower not to sue
third persons;

          (d) Borrower has the corporate  power and authority to enter into this
Agreement and perform its terms;

          (e) Borrower has complied  with, and will continue for the duration of
this  Agreement  to comply  with the  requirements  set forth in 15 U.S.C.  Sec.
1051-1127 and any other applicable statutes, rules and regulations in connection
with its use of the  Trademarks  except where failure to comply would not have a
Material Adverse Effect on Borrower or its property;

          (f)  Borrower  has no  notice  of any suits or  actions  commenced  or
threatened  against it, or notice of claims  asserted or threatened  against it,
with reference to the Trademarks; and

          (g)  Borrower  has used and will  continue to use for the  duration of
this Agreement,  consistent  standards of quality in services or products leased
or sold under the  Trademarks  and hereby grants to Lender and its employees and
agents the right (with no  obligation of any kind upon Lender to do so) to visit
Borrower's affiliates, franchises or management locations and to inspect the use
of the Trademarks and quality  control  records  relating  thereto at reasonable
times during regular  business hours to ensure  Borrower's  compliance with this
paragraph 3(g).

     4. Borrower further covenants that:

          (a) Until all of the Obligations are  indefeasibly  paid and satisfied
in full and the Revolving Credit is terminated, Borrower will not enter into any
agreement,  including, without limitation,  license agreements or options, which
are inconsistent with Borrower's  obligations  under this Agreement,  Borrower's
obligations under the Loan Agreement or which restrict or impair Lender's rights
hereunder.

          (b) If Borrower acquires rights to any new trademarks,  the provisions
of this Agreement shall automatically apply thereto and such trademarks shall be
deemed part of the Trademarks.  Borrower shall give Lender prompt written notice
thereof along with an amended Schedule "A."

     5. So long as this  Agreement  is in effect and so long as Borrower has not
received notice from Lender that an Event of Default has occurred under the Loan
Agreement and that

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Lender has not elected to exercise  its rights  hereunder:  (i)  Borrower  shall
continue  to have the  exclusive  right to use the  Trademarks;  and (ii) Lender
shall  have  no  right  to  use  the   Trademarks  or  issue  any  exclusive  or
non-exclusive  license  with  respect  thereto,  or assign,  pledge or otherwise
transfer title in the Trademarks to anyone else.

     6.  Borrower  agrees  not to sell,  grant any  option,  assign  or  further
encumber its rights and interest in the Trademarks to any entity or person other
than Lender, Borrower or any Surety without the prior written consent of Lender.

     7. Anything herein contained to the contrary notwithstanding,  if and while
an Event of Default exists under the Loan Agreement,  Borrower hereby  covenants
and agrees that Lender,  as the holder of a security  interest under the Uniform
Commercial  Code, as now or hereafter in the  jurisdiction  set forth in Section
9.1 of the Loan  Agreement,  may take such action  permitted  hereunder,  in its
exclusive discretion,  to foreclose upon the Trademarks covered hereby. For such
purposes,  while an Event of Default  exists,  Borrower  hereby  authorizes  and
empowers  Lender to make,  constitute and appoint any officer or agent of Lender
as Lender may select, in its exclusive discretion, as Borrower's true and lawful
attorney-in-fact, with the power to endorse Borrower's name on all applications,
documents,  papers and instruments necessary for Lender to use the Trademarks or
to grant or issue any exclusive or non-exclusive license under the Trademarks to
anyone else,  or  necessary  for Lender to assign,  pledge,  convey or otherwise
transfer title in or dispose of the Trademarks to anyone else including, without
limitation,  the power to execute a Trademark  Assignment  in the form  attached
hereto as Exhibit 1.  Borrower  hereby  ratifies all that such attorney or agent
shall  lawfully  do or cause to be done by virtue  hereof,  except for the gross
negligence  or  willful  misconduct  of such  attorney  or agent.  This power of
attorney  shall  be  irrevocable  for  the  life  of this  Agreement,  the  Loan
Agreement,  and until all of the Obligations are indefeasibly paid and satisfied
in full and the Revolving Credit is terminated.

     8. This Agreement shall be subject to the terms, provisions, and conditions
set forth in the Loan  Agreement  and may not be  modified  without  the written
consent of the party against whom enforcement is being sought.

     9. All rights and remedies herein granted to Lender shall be in addition to
any rights and remedies granted to Lender under the Loan Documents. In the event
of an inconsistency  between this Agreement and Loan Agreement,  the language of
this Agreement shall control.

     10. Upon Borrower's  performance of all of the  obligations  under the Loan
Agreement and after all of the Obligations are  indefeasibly  paid and satisfied
in full and the Revolving  Credit is  terminated,  Lender  shall,  at Borrower's
expense,  execute and deliver to Borrower all documents  reasonably necessary to
terminate Lender's security interest in the Trademarks.

     11. Any and all reasonable  fees,  costs and expenses,  of whatever kind or
nature,  including the reasonable attorneys' fees and legal expenses incurred by
Lender  in  connection  with the  preparation  of this  Agreement  and all other
documents  relating hereto and the consummation of this transaction,  the filing
or recording of any documents  (including all taxes in connection  therewith) in
public offices, the payment or discharge of any taxes,  reasonable counsel fees,
maintenance  fees,  encumbrances  or costs  otherwise  incurred  in  protecting,
maintaining,  preserving  the  Trademarks,  or in defending or  prosecuting  any
actions or proceedings arising out of or related

                                       3


to the Trademarks,  in each case in accordance with the terms of this Agreement,
shall be borne and paid by  Borrower on demand by Lender and until so paid shall
be added to the  principal  amount of the  Obligations  to Lender and shall bear
interest at the otherwise applicable rate prescribed in the Loan Agreement.

     12. Subject to the terms of this Agreement, Borrower shall have the duty to
prosecute  diligently any application  and/or  registration  with respect to the
Trademarks pending as of the date of this Agreement or thereafter,  until all of
the  Obligations are  indefeasibly  paid and satisfied in full and the Revolving
Credit is terminated, to preserve and maintain all rights in the Trademarks, and
upon reasonable  request of Lender,  Borrower shall make federal  application on
registerable but unregistered  Trademarks  belonging to Borrower and licensed to
Borrower unless Borrower  determines in good faith that failure to register such
Trademarks would not have a Material Adverse Effect on Borrower or its Property.
Any reasonable  expenses incurred in connection with such applications  shall be
borne exclusively by Borrower. Borrower shall not abandon any Trademarks without
the prior written consent of Lender.

     13.  Borrower shall have the right to bring suit in its own name to enforce
the  Trademarks,  in which event  Lender may,  if Borrower  reasonably  deems it
necessary,  be joined as a nominal  party to such suit if Lender shall have been
satisfied, in its sole discretion,  that it is not thereby incurring any risk of
liability  because  of such  joinder.  Borrower  shall  promptly,  upon  demand,
reimburse and indemnify  Lender for all damages,  costs and expenses,  including
reasonable  attorneys' fees and costs,  incurred by Lender in the fulfillment of
the provisions of this paragraph.

     14. Upon the  occurrence of an Event of Default  under the Loan  Agreement,
Lender may, without any obligation to do so, complete any obligation of Borrower
hereunder,  in  Borrower's  name or in  Lender's  name,  but at the  expense  of
Borrower.

     15. No course of dealing  between  Borrower and Lender,  nor any failure to
exercise,  nor any delay in exercising,  on the part of Lender, any right, power
or privilege  hereunder,  shall operate as a waiver thereof, and all of Lender's
rights and remedies with respect to the Trademarks,  whether  established hereby
or by the Loan Agreement, or by any other future agreements between Borrower and
Lender  or by law,  shall  be  cumulative  and may be  exercised  singularly  or
concurrently.

     16. The  provisions of this  Agreement are severable and the  invalidity or
unenforceability  of  any  provision  herein  shall  not  affect  the  remaining
provisions which shall continue unimpaired and in full force and effect.

     17. This  Agreement  shall inure to the benefit of and be binding  upon the
respective successors and permitted assigns of the parties.

     18. Borrower irrevocably agrees to consent to the jurisdiction of the state
and  federal  courts of the  jurisdiction  set forth in Section  9.1 of the Loan
Agreement, without regard to its otherwise applicable principles or conflicts of
law.

     19.  BORROWER (AND LENDER BY ITS  ACCEPTANCE  HEREOF) HEREBY WAIVES ANY AND
ALL  RIGHTS  IT MAY HAVE TO A JURY  TRIAL  IN  CONNECTION  WITH ANY  LITIGATION,
PROCEEDING OR COUNTERCLAIM ARISING WITH RESPECT TO RIGHTS AND OBLIGATIONS OF THE
PARTIES HERETO OR UNDER THE

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LOAN  AGREEMENT  OR WITH RESPECT TO ANY CLAIMS  ARISING OUT OF ANY  DISCUSSIONS,
NEGOTIATIONS  OR  COMMUNICATIONS  INVOLVING OR RELATED TO ANY  PROPOSED  RENEWAL
EXTENSION,  AMENDMENT,  MODIFICATION,   RESTRUCTURE,  FORBEARANCE,  WORKOUT,  OR
ENFORCEMENT OF THE TRANSACTIONS CONTEMPLATED BY THE LOAN AGREEMENT.

     IN WITNESS  WHEREOF,  the  parties  hereto  have  executed  this  Trademark
Security Agreement, under seal, the day and year first above written.


                                 BORROWER:
                                 BLONDER TONGUE LABORATORIES, INC.


                                 By: /s/ James A. Luksch
                                    -----------------------------------------
                                    James A. Luksch, President and CEO


                                                                (Corporate Seal)



                                 Address:  c/o Blonder Tongue Laboratories, Inc.
                                           One Jake Brown Road
                                           Old Bridge, NJ 08857
                                           Attn:   President


APPROVED AND ACCEPTED:
COMMERCE BANK, N. A.


By: /s/ Kurt J. Fuoti
   -------------------------------------
   Kurt J. Fuoti, Vice President



                                       5


                            CORPORATE ACKNOWLEDGMENT
                            ------------------------


UNITED STATES OF AMERICA            :
COMMONWEALTH OF PENNSYLVANIA        :SS
COUNTY OF PHILADELPHIA              :

     On this 20th day of March,  2002,  before me personally  appeared  JAMES A.
LUKSCH,  to me known  and  being  duly  sworn,  deposes  and says that he is the
President  and  CEO  of  BLONDER  TONGUE  LABORATORIES,  INC.,  the  corporation
described in the foregoing Agreement; that he knows the seal of the corporation;
that the seal so affixed to the Agreement is such corporate seal; that he signed
the  agreement and affixed the seal of the  corporation  thereto as such officer
pursuant to the authority vested in him by law; that the within Agreement is the
voluntary act of such corporation; and he/she desires the same to be recorded as
such.


                                                        ------------------------
                                                        Notary Public
                                                        My Commission Expires:


                                       6


                   SCHEDULE A TO TRADEMARK SECURITY AGREEMENT
                   ------------------------------------------


                 APPLICATION OR
TRADEMARK        REGISTRATION NO.          COUNTRY            FILING DATE
- ---------        ----------------          -------            -----------


BLONDER TONGUE        819,812                US                 12/6/66
                                                            Renewed: 12/16/86



BT (with design)      821,512                US                  1/3/67
                                                            Renewed: 12/16/86



                                       7


                    EXHIBIT 1 TO TRADEMARK SECURITY AGREEMENT
                    -----------------------------------------


                              TRADEMARK ASSIGNMENT


     WHEREAS,   BLONDER  TONGUE  LABORATORIES,   INC.,  a  Delaware  corporation
("Grantor"), is the registered owner of the United States trademarks, tradenames
and registrations  listed on Schedule "A" attached hereto and made a part hereof
(the  "Trademarks"),  which are  registered  in the  United  States  Patent  and
Trademark Office; and


     WHEREAS,  ___________________("Grantee")  having  a place  of  business  at
___________________________________, is desirous of acquiring the Trademarks;


     NOW  THEREFORE,  for good and valuable  consideration,  receipt of which is
hereby  acknowledged,  and intending to be legally bound  hereby,  Grantor,  its
successors and assigns, does hereby transfer,  assign and set over unto Grantee,
its successors,  transferees  and assigns,  all of its present and future right,
title and interest in and to the  Trademarks  and all  proceeds  thereof and all
goodwill associated therewith.


     IN WITNESS WHEREOF, the undersigned has caused this Trademark Assignment to
be executed as of the ____ day of _________, 200___.


                                              BLONDER TONGUE LABORATORIES, INC.



Witness:  _____________________               By:_______________________________
                                                         As Attorney-in-fact

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                            CORPORATE ACKNOWLEDGMENT
                            ------------------------



UNITED STATES OF AMERICA                   :
STATE OF ______________________            :        SS
COUNTY OF _____________________             :



     On this the ____ day of _____________, 200___ before me a Notary Public for
the said County and State,  personally  appeared  ______________________________
known to me or satisfactorily  proven to me to be  attorney-in-fact on behalf of
BLONDER TONGUE  LABORATORIES,  INC.  ("Grantor"),  and he/she acknowledged to me
that he/she  executed the foregoing  Trademark  Assignment on behalf of Grantor,
and as the act and deed of Grantor for the purposes therein contained.


     IN WITNESS WHEREOF, I hereunto set my hand and official seal.


                                                   -----------------------------
                                                         (Individual Notary)

                                                   My Commission Expires:

                                                   _____________, ______


                                       9



                       SCHEDULE A TO TRADEMARK ASSIGNMENT
                       ----------------------------------




                      APPLICATION/OR
TRADEMARK             REGISTRATION NO.          COUNTRY          FILING DATE
- ---------             ----------------          -------          -----------


BLONDER TONGUE            819,812                US               12/6/66
                                                              Renewed: 12/16/86



BT (with design)          821,512                US               1/3/67
                                                              Renewed: 12/16/86


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