AMENDED AND RESTATED PATENT SECURITY ASSIGNMENT WHEREAS, BLONDER TONGUE LABORATORIES, INC., a Delaware corporation (the "Borrower") located at One Jake Brown Road, Old Bridge, NJ 08857, owns the patents and patent applications shown in the attached Schedule A (the "Patents"), for which there are recordings or applications in the United States Patent and Trademark Office under the numbers shown in the attached Schedule A; and WHEREAS, Borrower is obligated to FIRST UNION NATIONAL BANK, a national banking association ("Lender") located at 370 Scotch Road, West Trenton, New Jersey 08628, pursuant to (i) a certain Fourth Amended and Restated Loan Agreement dated as of February 1, 1999 and (ii) a certain Second Amended and Restated Security Agreement dated the date hereof made by Borrower in favor of Lender (as each may be amended, modified, restated or supplemented from time to time, collectively, the "Agreements"); and WHEREAS, pursuant to the Agreements, Borrower is granting to Lender a security interest in the Patents, all proceeds thereof, all rights corresponding thereto and all reissues, divisions, continuations, renewals, extensions and continuations-in-part thereof, and the recordings and applications therefore. NOW, THEREFORE, for good and valuable consideration, receipt of which is hereby acknowledged, Borrower does hereby assign unto Lender and grant to Lender a security interest in and to the Patents, and recordings and applications therefor, which assignment and security interest shall secure all the Obligations as defined in the Agreements and in accordance with the terms and provisions thereof. Borrower expressly acknowledges and affirms that the rights and remedies of Lender with respect to the assignment and security interest granted hereby are more fully set forth in the Agreements. Dated: as of February 1, 1999 Witness: BLONDER TONGUE LABORATORIES, INC. as Borrower /s/ Gary P. Scharmett By: /s/ James A. Luksch - -------------------------- --------------------------------- James A. Luksch: President Witness: FIRST UNION NATIONAL BANK as Lender /s/ Elizabeth Cotrela By: /s/ Richard Banning - -------------------------- --------------------------------- Richard Banning Assistant Vice President: Acknowledgment of Borrower's Execution STATE of NEW JERSEY ) ) SS: COUNTY of MIDDLESEX ) On this June 16th, 1999, before me personally came James A. Luksch, to me known, who, being by me duly sworn, did depose and say that he is the President of Blonder Tongue Laboratories, Inc., the corporation described in and which executed the foregoing instrument; and that he signed his name thereto by order of the board of directors of said corporation. /s/ Candace R. Tice --------------------------------------------- Notary Public Acknowledgment of Lender's Execution STATE of NEW JERSEY ) ) SS: COUNTY of MERCER ) On this 17th day of June, 1999, before me personally came Richard Banning, to me known, who, being by me duly sworn, did depose and say that he is the Assistant Vice President of First Union National Bank, the corporation described in and which executed the foregoing instrument; and that he signed his name thereto by order of the board of directors of said corporation. /s/ Donna Scanzera-Stoedtes --------------------------------------------- Donna Scanzera-Stoedtes An Attorney at Law of the State of New Jersey 2 SCHEDULE A Schedule A to a Patent Assignment of Security dated as of February 1, 1999 by and between Blonder Tongue Laboratories, Inc. and First Union National Bank. - ---------------------------------------------------------------------------------------------------------------------- PATENT NO. ISSUE DATE TITLE - ---------------------------------------------------------------------------------------------------------------------- 4912760 3/27/90 Off Premises Cable Television Channel Interdiction Method and Apparatus - ---------------------------------------------------------------------------------------------------------------------- 5014309 5/7/91 Same as above. - ---------------------------------------------------------------------------------------------------------------------- 5208854 5/4/93 Picture Carrier controlled Automatic Gain Control Circuit for Cable Television Interdiction or Jamming Apparatus - ---------------------------------------------------------------------------------------------------------------------- 4963966 10/16/90 CATV Distribution System, Especially Adapted for Off-Premises Premium Channel Y Interdiction - ---------------------------------------------------------------------------------------------------------------------- 5303295 4/12/94 Enhanced Versatility of a Program by a Combination of Technologies ION of Y Technologies - ---------------------------------------------------------------------------------------------------------------------- 5287539 2/15/94 Interdiction Program Denial System for Jamming Audio and Video Signals - ---------------------------------------------------------------------------------------------------------------------- 5467397 11/14/95 Interdiction Method and Apparatus with Variable Dwell Time - ---------------------------------------------------------------------------------------------------------------------- 5323462 6/21/94 CATV Subscriber Disconnect Switch - ---------------------------------------------------------------------------------------------------------------------- 5194947 3/16/93 CATV Signal Distribution Apparatus - ---------------------------------------------------------------------------------------------------------------------- 5142574 8/25/92 Optimum Amplitude and Frequency of Jamming Carrier in Interdiction Program Denial System - ---------------------------------------------------------------------------------------------------------------------- 5278908 1/11/94 Interdiction Method and Apparatus with Programmable Jamming Effectiveness - ---------------------------------------------------------------------------------------------------------------------- 5245420 9/14/93 CATV Pay Per View Interdiction - ---------------------------------------------------------------------------------------------------------------------- 5331412 7/19/94 Tamper Resistant Apparatus for a CATV System - ---------------------------------------------------------------------------------------------------------------------- 5231660 7/27/93 Compensation Control for Off-Premises CATV System - ---------------------------------------------------------------------------------------------------------------------- 5144267 9/1/92 Variable Slope Network for Off-Premises CATV System - ---------------------------------------------------------------------------------------------------------------------- 5345504 9/6/94 Differential Compensation Control for Off-Premises CATV System - ---------------------------------------------------------------------------------------------------------------------- 5251220 10/5/93 Method and Apparatus for Error Detection and Processing - ---------------------------------------------------------------------------------------------------------------------- 5505901 4/9/96 CATV Pay Per View Interdiction System Method and Apparatus - ---------------------------------------------------------------------------------------------------------------------- 5436822 7/25/95 Polarity Reversing DC Power Supply for Remotely Located Equipment - ---------------------------------------------------------------------------------------------------------------------- 5243647 9/7/93 Method and Apparatus for Broadband Signal Distribution - ---------------------------------------------------------------------------------------------------------------------- 5243651 9/7/93 Diagnostic Method and Apparatus for a Cable Television Interdiction System - ---------------------------------------------------------------------------------------------------------------------- 5311325 5/10/94 Method and Apparatus for Providing Periodic Subscription Television Service - ---------------------------------------------------------------------------------------------------------------------- 5289541 2/22/94 Interdiction Method and Apparatus with Constant Blanking and Variable Dwell Times - ---------------------------------------------------------------------------------------------------------------------- 5361301 11/1/94 Interdiction Method and Apparatus with Direct Memory Control of Variable Frequency Elements of Variable Frequency Elements - ---------------------------------------------------------------------------------------------------------------------- 5463689 10/31/95 Interdiction Method and Apparatus with Random Mode Jamming - ---------------------------------------------------------------------------------------------------------------------- 5317635 5/31/94 Interdiction Method and Apparatus with Mode Control for Variable Frequency Elements - ---------------------------------------------------------------------------------------------------------------------- 5265160 11/23/93 Interdiction Method and Apparatus with Pulsed Mode Jamming - ---------------------------------------------------------------------------------------------------------------------- 5341424 8/23/94 Interdiction Method and Apparatus with Frequency Change Inhibit Function - ---------------------------------------------------------------------------------------------------------------------- 5604528 2/18/97 Method and Apparatus for Providing Periodic Subscription Television Services - ---------------------------------------------------------------------------------------------------------------------- 3