Production Agreement for
                        Prod IV (Model P-4R) Radio Units





                                TABLE OF CONTENTS

Section           Title

1.                DEFINITIONS...............................................  1
                                                                               
2.                PRODUCTION SCOPE..........................................  2
                  2.1      Production.......................................  2
                  2.2      Minimum Purchase Amount..........................  3
                  2.3      Frequency Variation..............................  3
                  2.4      Supplier Relationship............................  3
                  2.5      InterDigital Supply..............................  3
                                                                               
3.                ORDER AND ROLLING FORECAST................................  3
                  3.1      Rolling Forecast.................................  3
                  3.2      Purchase Order Requirements .....................  4
                  3.2      Additional Requirements..........................  4
                  3.3      Forecast Accuracy................................  4
                                                                               
4.                PRICE AND PAYMENT.........................................  4
                  4.1      Price............................................  4
                  4.2      Schedule.........................................  4
                  4.3      Price Adjustments................................  4
                                                                              
5.                DELIVERY AND TITLE........................................  5
                  5.1      Shipping Requirements............................  5
                  5.2      Packaging and Other Requirements.................  5
                  5.3      Product Title....................................  5
                  5.4      Delivery Date....................................  5
                                                                              
6.                INSPECTIONS...............................................  5
                  6.1      ISO Standards....................................  5
                  6.2      Inspection Procedure Approval....................  5
                  6.2      Outgoing Product Inspection......................  5
                  6.3      Incoming Product Inspection......................  5
                  6.4      Nonconforming Products...........................  5
                  6.5      On-Site Inspections..............................  6
                                                                              
7.                CHANGES...................................................  6
                  7.1      Purchase Orders..................................  6
                  7.2      Design Changes...................................  6
                                                                              
8.                CONFIDENTIAL INFORMATION..................................  7
                  8.1      Designation of Confidential Information..........  7
                  8.2      Nondisclosure....................................  7
                  8.3      Exceptions.......................................  7
                  8.4      Limitations......................................  7


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                  8.5      Survival.........................................  7

9.                TERM, TERMINATION AND EXPIRATION..........................  8
                  9.1      Term.............................................  8
                  9.2      Termination Without Cause........................  8
                  9.3      Termination For Cause............................  8

                  9.5      Cancellation.....................................  9
                  9.6      Return of Confidential Information...............  9
                  9.7      Survival/Final Delivery..........................  9

10.               WARRANTY..................................................  9
                  10.1     Warranty.........................................  9
                  10.2     Notification/Remedy.............................. 10
                  10.3     Marking.......................................... 10
                  10.4     Non-Waiver....................................... 10
                  10.5     Warranty Limitation.............................. 10
                  10.6     Title Warranty................................... 10
                  10.7     LIMITATION....................................... 10

11.               OUT-OF-WARRANTY SERVICE................................... 10

12.               INSURANCE AND INDEMNIFICATION............................. 10
                  12.1     Indemnification.................................. 10
                  12.2     Insurance........................................ 11
                  12.3     LIMITATION OF LIABILITY.......................... 11

13.               INTELLECTUAL PROPERTY..................................... 11
                  13.1     Pre-Existing Intellectual Property............... 11
                  13.2     Developed Proprietary Information................ 11
                  13.3     Third Party Intellectual Property Rights......... 11

14.               ARBITRATION............................................... 12

15.               FORCE MAJEURE............................................. 12

16.               NOTICES................................................... 12
                  16.1     Notice Requirements.............................. 12
                  16.2     Receipt.......................................... 13

17.               SEVERABILITY.............................................. 13

18.               SUBCONTRACTING............................................ 13

19.               LIENS..................................................... 13

20.               WAIVER.................................................... 13

21.               ASSIGNMENT................................................ 13

22.               AMENDMENT................................................. 14

23.               ENTIRE AGREEMENT.......................................... 14

24.               HEADINGS.................................................. 14


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25.               GOVERNING LAW............................................. 14

26.               TAXES..................................................... 14

27.               INDEPENDENT CONTRACTOR.................................... 14

28.               LABELING  ................................................ 14

29.               PUBLIC ANNOUNCEMENTS.  ................................... 15


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                              PRODUCTION AGREEMENT

THIS PRODUCTION AGREEMENT (the "Agreement"), made and entered into this 1st day
March of 1996 ("Effective Date") by and between INTERDIGITAL COMMUNICATIONS
CORPORATION, a Pennsylvania corporation having its principal place of business
at 781 Third Avenue, King of Prussia, PA 19406-1409, USA (hereinafter referred
to as "InterDigital") and KENWOOD CORPORATION, a Japanese corporation having its
principal place of business at 1-14-6, Dogenzaka, Shibuya-ku, Tokyo 150, Japan
(hereinafter referred to as "Kenwood").

                               W I T N E S S E T H

WHEREAS, InterDigital has entered into and believes in the future it will enter
into agreements with customers to supply and/or install communications equipment
in certain locations and within specified period of time, which communications
equipment will include the RF radio units ("Customer Agreements"); and

WHEREAS, time, pricing and performance are the essence of such Customer
Agreements; and

WHEREAS, InterDigital has developed a specification for an RF radio unit to be
incorporated in Prod IV, a subscriber unit, to be supplied under Customer
Agreements; and

WHEREAS, InterDigital and Kenwood have entered into an agreement for the
development of a prototype of the RF radio unit (the "Development Agreement" as
further defined below); and

WHEREAS, Kenwood has expertise in the manufacture of products similar to the RF
radio unit and is desirous of manufacturing RF radio unit for InterDigital; and

WHEREAS, InterDigital desires to engage Kenwood on a non-exclusive basis, but
subject to minimum purchase quantities, to manufacture specified units of the
Product (as hereinafter defined), under and subject to the terms and conditions
set forth herein.

NOW, THEREFORE, in consideration of the mutual covenants and promises contained
herein, and intending to be legally bound, the parties hereto agree as follows:


1.       DEFINITIONS

1.1      "Delivery Date" shall mean the date when a quantity of Product (as
         hereinafter defined)agreed to and established by InterDigital and
         Kenwood as set forth in Section 3.1 is to be loaded on a vessel at the
         Shipping Location (as hereinafter defined). Standard Delivery Date
         shall be the end of the fifth month after Purchase Order issue.

1.2      "Defect" shall mean any non-conformity of the Product to Engineering
         Specifications (as hereinafter defined) or the Pre-Production Model (as
         hereinafter defined).


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1.3      "Development Agreement" shall mean the Development Agreement for the
         PROD IV (Model P-4R) Radio Units dated March 1, 1996, as may be amended
         from time to time, between InterDigital and Kenwood.

1.4      "Engineering Specifications" shall mean the drawings and specification
         documents containing the physical, mechanical, electrical, interface
         and protocol specifications of the Product (as hereinafter defined) as
         accepted by InterDigital pursuant to the Development Agreement and as
         may be amended from time to time as provided herein.

1.5      "Intellectual Property" shall mean any and all patents, patent
         applications, trademarks, copyrights, proprietary know-how, trade
         secrets, processes, designs, discoveries, innovations, inventions or
         other tangible or intangible intellectual property rights.

1.6      "Pre-Production Model" shall mean the final sample of the printed
         circuit board for the RF analogue circuitry, which is a part of the
         subscriber unit developed by InterDigital, and which is accepted by
         InterDigital pursuant to the Development Agreement.

1.7      "Product" shall mean the full assembled circuit card assembly for the
         RF analogue circuitry, including all InterDigital Components (as
         defined in Section 2.5), which is a part of the subscriber unit
         developed by InterDigital, to be manufactured by Kenwood pursuant to
         the requirements of this Agreement.

1.8      "Purchase Order" shall mean any firm order for Products issued by
         InterDigital to Kenwood during the term of this Agreement.

1.9      "Shipping Destination" shall mean the InterDigital's receiving
         warehouse in King of Prussia, Pennsylvania or such other destination in
         the continental United States as InterDigital may designate in writing
         to Kenwood from time to time.

1.10     "Shipping Location" shall mean the loading port of the Products in
         Japan.

1.11     "Outgoing and Incoming Inspection Regulations and Standards" shall mean
         the regulations, rules and standards agreed upon by InterDigital and
         Kenwood and as may be amended from time to time by agreement of the
         parties, to be used by Kenwood to conduct outgoing Product inspection
         and by InterDigital to conduct incoming Product inspections. The
         initial inspection regulations and standards are attached hereto as
         Exhibit "A".

1.12     "Technical Material" shall mean designs, patterns, drawings, plans,
         specifications, development processes, worksheets, and any other
         information, manuals, documents, notes, letters, records, computer
         programs, molds, dies, tooling, equipment and similar property.

1.13     "Work" shall mean the efforts undertaken by Kenwood to manufacture,
         ship, and, as necessary, rework, repair or replace Products.


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2.       PRODUCTION SCOPE

2.1      Production. Upon (i)successful development and acceptance of the Pre-
         Production Model, Engineering Specifications and production test data
         under the Development Agreement, and (ii) the finalization of the
         Outgoing and Incoming Inspection Regulations and Standards pursuant to
         Section 1.11 hereto, InterDigital shall order and purchase from Kenwood
         and Kenwood shall manufacture for and sell to InterDigital Products in
         accordance with (i) the Engineering Specification and Pre-Production
         Model,(ii) this Agreement and (iii) the schedule established as set
         forth in Section 3.1.

2.2      Minimum Purchase Amount. Kenwood agrees to manufacture and deliver and
         InterDigital agrees to purchase Fifty Thousand (50,000) units of the
         Product prior to December 29, 1997, subject to the parties' termination
         rights as set forth in Section 9.

2.3      Frequency Variation. Kenwood shall produce under this Agreement
         Products having frequency variation from the Pre-Production Model,
         provided, however, that (i) such modified Product shall have been
         developed and approved under the Development Agreement, and (ii) the
         minimum production quantity per frequency variation shall be no less
         than One Thousand (1,000) units of Products. With the exception of
         those two conditions, all other provisions of this Agreement shall be
         equally applicable to Products with frequency variation.

2.4      Supplier Relationship. As of the Effective Date, Kenwood is
         InterDigital's only provider of Products. In the event InterDigital
         decides, in its sole discretion, to manufacture Products itself or have
         any third party manufacture Products for it, InterDigital shall
         promptly advise Kenwood in writing to that effect.

2.5      InterDigital Supply. InterDigital shall ship to Kenwood at
         InterDigital's cost and risk the duplexers and, if agreed to by the
         parties, the High Power Amplifier ("InterDigital Components") which
         shall be received by Kenwood at its plant at least sixty (60) days
         prior to Delivery Date. Kenwood shall not be liable for (i) failing to
         meet Delivery Date to the extent such failure is attributable to
         InterDigital's failure to ship InterDigital Components on a timely
         basis, or (ii) non-conformity to the Engineering Specifications or
         Outgoing and Incoming Inspection Regulations and Standards resulting
         from the failure or defect of InterDigital Component. In the event such
         failure or defect of InterDigital Component shall be found, Kenwood
         will notify InterDigital in writing the detail of failure or defect and
         if the failure or defect rate is estimated more than three percent
         (3%), Kenwood may stop mass-production and InterDigital and Kenwood
         shall find a solution or countermeasure in good faith and re-establish
         Delivery Date of Products of stopped production and future production
         of products. Kenwood shall be responsible to the failure or damage of
         InterDigital Component which result from Kenwood's improper handling,
         storage, mounting to the PCB or alignment.


                                       3




3.       ORDER AND ROLLING FORECAST

3.1      Rolling Forecast. InterDigital shall at the beginning of each month,
         provide Kenwood with (i) a Purchase Order for Products it requires
         Kenwood to deliver within 6 months from the date of such Purchase Order
         ("Delivery Date"), and (ii) a forecast of InterDigital's Product
         requirements for the 5 month period following the month in which such
         Purchase Order was issued. Kenwood shall provide InterDigital with
         written confirmation of receipt of the Purchase Order, including
         whether Kenwood can meet the Delivery Date. It is mutually agreed that
         the standard production lead-time shall be five (5) months from the
         Purchase Order issue date and the standard Delivery Date shall be at
         the end of the fifth month.

3.2      Purchase Order Requirements. The Purchase Order shall include the
         following information:

         (A)      Date of issue and purchase order number
         (B)      Quantity of Product to be delivered
         (C)      Total price
         (D)      Required Delivery Date
         (E)      Shipping instructions and Shipping Destination
         (F)      Reference to this Agreement
         (G)      Authorized signature

         In the event of a conflict between the Purchase Order and the terms of
         this Agreement, this Agreement shall control.

3.3      Additional Requirements.  InterDigital may, from time to time, notify
         Kenwood in writing if (i) InterDigital's Product requirements exceed
         the amount specified in a Purchase Order and (ii) InterDigital desires
         Kenwood to supply additional Products. Kenwood will use all reasonable
         efforts to meet InterDigital's additional Product requirements.

3.4      Forecast Accuracy. InterDigital shall use reasonable efforts to provide
         accurate forecasts of Product requirements. With the exception of the
         firm Purchase Orders, and subject to InterDigital's minimum purchase
         requirements set forth in Section 2.2 hereto, however, InterDigital
         shall have no liability to Kenwood for changes to the Product
         forecasts.

4.       PRICE AND PAYMENT

4.1      Price. The base price for each unit of Product, excluding HPA mounting,
         testing and related adjustment costs, shall be US$ *, FCA (except that
         Kenwood shall also pay marine insurance)(Shipping Location)(according
         to Incoterms 1990), payable in J(Y) at the exchange rate determined in
         Section 4.3 hereto. The additional cost for HPA mounting, testing and
         related adjustment shall be subject to agreement between the parties.

4.2      Schedule. InterDigital shall pay Kenwood for Products forty-five (45)
         days prior to the Delivery Date.

- ----------
* Confidential treatment has been requested for the deleted text, which has been
  filed separately with the Securities and Exchange Commission.


                                       4




4.3      Price Adjustments. The base price set forth in Section 4.1 shall be
         valid during the term of this Agreement; provided, however, that, the
         price for units included in each Purchase Order shall be adjusted in
         the event that the closing middle exchange rate at New York market as
         of the date of such Purchase Order (the "Current Rate"), fluctuates
         plus or minus five (5) percent from the base exchange rate
         ((Y)100/US$)(the "Base Rate"). Both parties shall share equally any
         exchange loss or profit by using a new exchange rate for the Purchase
         Order quantity by using a calculated exchange rate, which shall be
         derived as follows:

                            Base Rate + Current Rate
                            ------------------------
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5.       DELIVERY AND TITLE

5.1      Shipping Requirements. Kenwood shall ship the Products FCA (except that
         Kenwood shall also pay marine insurance)(Shipping Location)(Incoterms
         1990). Kenwood shall also arrange for shipping to the Port of
         Philadelphia, Pennsylvania, or such other destination as InterDigital
         may prescribe in the Purchase Order, such costs (including freight and
         importation fees but excluding insurance) to be paid by InterDigital.
         Notwithstanding the foregoing, Kenwood shall bear the Risk of Loss to
         all Products, work in progress, materials, tools and other things
         independent of title until placed on the loading dock at the Shipping
         Destination.

5.2      Packaging and Other Requirements. Unless otherwise specified by
         InterDigital in writing, Kenwood shall properly pack, box, crate or
         prepare all Products for shipment so as to prevent damage in transit
         and to ship in accordance with the requirements of common carriers in a
         manner to secure lowest transportation cost.

5.3      Product Title. Title to the Product shall pass to InterDigital when the
         Product has been placed on the loading dock at the Shipping Location.

5.4      Delivery Date. ALL TIME LIMITS STATED IN THIS AGREEMENT AND IN ANY
         PURCHASE ORDER ARE OF THE ESSENCE OF THIS AGREEMENT. Kenwood shall
         ensure that Product shipments are made on or before the Delivery Date
         as set forth in Section 3.1. Kenwood shall make up delays at its
         expense by, among other things, providing additional people and shifts,
         as required.

6.       QUALITY ASSURANCE/INSPECTIONS

6.1      ISO Standards. Kenwood warrants that it and, to the extent commercially
         practicable, its key contractors and suppliers, are certified according
         to ISO 9001 and shall remain so at all times pertinent to Kenwood's
         performance hereunder.

6.2      Inspection Procedure Approval. Prior to the Kenwood's commencement of


                                       5




         Product mass-production, Kenwood and InterDigital shall finalize and
         agree upon the Outgoing and Incoming Inspection Regulations and
         Standards.

6.3      Outgoing Product Inspection. Kenwood shall inspect the Products in
         accordance with the Outgoing and Incoming Inspection Regulations and
         Standards. Kenwood, at its sole cost and expense, shall perform any
         repairs, rework or modifications to, or provide replacement Products
         for, any Products not meeting the Outgoing and Incoming Inspection
         Regulations and Standards.

6.4      Incoming Product Inspection. Within thirty (30) days after the Products
         are received by InterDigital at the Shipping Destination, InterDigital
         shall inspect Products in accordance with the Outgoing and Incoming
         Inspection Regulations and Standards. InterDigital has the right to
         reject any Products found to have a Defect, except if such Defect is
         the result of the failure or defect of an InterDigital Component. Upon
         completion of such inspection, InterDigital shall promptly notify
         Kenwood of the results of the inspection, including whether or not the
         Products are acceptable. InterDigital's acceptance of Products or its
         payment therefor shall not relieve Kenwood of any of its obligations
         hereunder or impose any duty on InterDigital with regard to the
         Products.

6.5      Nonconforming Products. If InterDigital identifies any Defects in
         Products ("Nonconforming Products"), Kenwood and InterDigital shall
         discuss in good faith the appropriate method for curing the
         Nonconforming Products, including whether the Nonconforming Products
         should be returned to Kenwood or repaired in the U.S.A., either by
         Kenwood or InterDigital; provided, however, that InterDigital, after
         such good faith discussions, may elect, in its sole discretion, the
         appropriate and reasonable means for curing the Nonconforming Product,
         and Kenwood shall promptly undertake such efforts. In all cases, all
         the expenses incurred to cure the Defect(s) shall be borne by Kenwood.

6.6      On-Site Inspections. Upon reasonable advance written notice, Kenwood
         shall allow InterDigital, its authorized representatives and customers
         for the Product to observe and inspect the Work, including materials
         and supplies being used, subject to Kenwood's then-existing
         confidentiality restrictions and security and safety requirements.

7.       CHANGES

7.1      Purchase Orders. InterDigital may cancel, or make reductions, in the
         amount of Products included in a Purchase Order, subject to the
         cancellation charges set out in Section 9.4. InterDigital may also
         defer delivery of Products under a Purchase Order for up to two (2)
         months, subject to the following charges and limitations set forth
         below:

         a)       InterDigital may request deferral of Product Delivery by
                  written request of more than thirty (30) days prior to
                  mutually agreed Delivery Date ("Original Delivery Date").

         B)       Kenwood will accept such deferral of Product delivery request


                                       6




                  if the deferral is up to thirty (30) days from Original
                  Delivery Date without any charge to InterDigital.

         C)       In the event the deferral request is for more than thirty (30)
                  days from Original Delivery Date, Kenwood shall stop
                  production and a new Delivery date shall be re-negotiated and
                  established between Interdigital and Kenwood. InterDigital
                  shall pay Kenwood the delayed interest which shall be
                  calculated by using annual rate of four (4)percent, number of
                  deferral days and deferral Product amount.

7.2      Design Changes. Kenwood shall not make any changes to the design of
         Product unless authorized in writing by InterDigital; provided,
         however, that Kenwood shall promptly advise InterDigital of all
         reasonably available technological advances which are known or become
         known to Kenwood over the course of performance of its obligations
         under this Agreement which may result in the Product having added value
         (i.e., better performance, design, material or longer useful life) to
         InterDigital. Should InterDigital elect to incorporate such advances,
         InterDigital shall do so by written notice to Kenwood, including
         whether InterDigital desires Kenwood to first develop a prototype
         incorporating such advances. Within thirty (30) days of receipt of such
         notice, Kenwood shall notify InterDigital in writing of the cost and
         schedule for implementing the advances, including producing a
         prototype, such costs to be determined on a comparable basis with those
         incurred under the Development Agreement and hereunder. InterDigital
         shall promptly notify Kenwood in writing as to whether Kenwood should
         proceed with such development.

8.       CONFIDENTIAL INFORMATION

8.1      Designation of Confidential Information. All information relating to
         the Product provided by either party to the other, whether before or
         after the date hereof and whether oral or written and transactions
         contemplated in this Agreement, shall be and is hereby deemed to be
         confidential and proprietary information (hereinafter called
         "Confidential Information"). Neither party shall be obligated to
         specifically identify any information as to whether the protection of
         this Section is desired by any notice, legend, or other action.

8.2      Nondisclosure. A party receiving Confidential Information shall not,
         without the prior written consent of the party disclosing such
         information, (i) use any portion of the Confidential Information for
         any purpose other than in connection with the performance of this
         Agreement, or (ii) disclose any portion of the Confidential Information
         to any persons or entities other than the employees and consultants of
         receiving party, its subcontractor or its affiliated companies, who
         reasonably need to have access to the Confidential Information in
         connection with the performance of this Agreement; provided, however,
         that such employees and consultants shall be informed of the
         confidentiality requirements herein and shall be required to execute an
         agreement having terms consistent with those provided in this Section
         8; and provided further that the receiving party shall be responsible


                                       7




         for any breach of the confidentiality requirements by such employee or
         consultants.

8.3      Exceptions. Notwithstanding the foregoing, a receiving party shall not
         be liable for disclosure of Confidential Information, or part thereof,
         if the receiving party can demonstrate that such Confidential
         Information:

         (A)      was in the public domain at the time it was disclosed;
         (B)      has been known to or in the possession of the party receiving
                  it at the time of receipt;
         (C)      is known to the receiving party from a source other than the
                  disclosing party without breach of this Section by the
                  receiving party; or
         (D)      has been disclosed to the government of the receiving party or
                  its agent in accordance with its order.

8.4      Limitations. Notwithstanding the foregoing, nothing in this Section
         shall be deemed to limit or alter InterDigital's rights under Section
         13 ("Intellectual Property").

8.5      Survival. The provisions of this Article shall survive termination,
         cancellation or expiration of this Agreement for five (5) years from
         the date of such termination, cancellation or expiration.

9.       TERM, TERMINATION AND EXPIRATION

9.1      Term. This Agreement shall be effective upon the Effective Date and,
         unless earlier terminated as provided herein, shall be valid and in
         force for a period of two (2) years thereafter. The parties may extend
         this Agreement my mutual written agreement.

9.2      Termination Without Cause. Notwithstanding any provision of this
         Agreement to the contrary, InterDigital may, after having purchased
         50,000 Products from Kenwood and upon thirty days' prior written notice
         to Kenwood, terminate this Agreement without cause and liability,
         except that InterDigital shall pay Kenwood for all cancellation
         charges, as set forth in Section 9.4.

9.3      Termination for Cause. Upon written notice to the other party, a party
         may terminate this Agreement as provided below:

         (A)      for either party at any time, without liability, if the other
                  party becomes insolvent, or a petition of bankruptcy is filed,
                  or any similar relief is filed by or against such party, or a
                  receiver is appointed with respect to any of the assets of
                  such party, or a liquidation proceeding is commenced by or
                  against such party;

         (B)      for either party at any time, without liability, if the other
                  party fails to correct or cure any material breach of any
                  covenant


                                       8




                  or obligation under this Agreement within thirty (30) calendar
                  days after receipt by such party of a written notice from the
                  other party specifying such breach; or

         (C)      for InterDigital if InterDigital has not secured sufficient
                  Customer Agreements to require Kenwood to produce Products,
                  even on a sole source basis; provided, however, if
                  InterDigital has not purchased 50,000 Products from Kenwood,
                  InterDigital, upon termination, shall pay Kenwood(i) all
                  cancellation charges, as set forth in Section 9.4, on the
                  Purchase Orders submitted to Kenwood; and (ii) a "Buyout
                  Amount" equal to the present value (calculated as of the date
                  of termination and using a discount rate of 8%) of 10% of the
                  purchase price for each month's projected Product deliveries
                  after such termination (excluding any firm Purchase Orders),
                  with such deliveries being sufficient to make up the
                  difference between the 50,000 minimum purchase quantity and
                  the number of units purchased by InterDigital up to the date
                  of termination, including firm purchases.

9.4      Cancellation. InterDigital may cancel any Purchase Order, in whole or
         in part, at any time. In such event, InterDigital shall pay the
         following cancellation charges to Kenwood with respect to the canceled
         order or part thereof:

         Number of Days Between
         Notice of Cancellation                             Cancellation Charge
         and Delivery Date                                  Per Unit of Product
         ----------------------                             -------------------
                0-90 days                                     Non-cancelable
              91-150 days                                           80%
            Over 150 days                                            0%

         (A)      Cancellation charges are expressed as a percentage of the
                  purchase price of a Product that would have been applicable
                  had it not been canceled. Payment of the applicable
                  cancellation charges, if any, shall be invoiced by Kenwood and
                  paid by InterDigital within thirty (30) days of receipt of
                  such invoice.

         (B)      Other than the above-stated cancellation charge, and subject
                  to InterDigital's minimum purchase obligation, InterDigital
                  shall have no further liability to Kenwood for canceled
                  orders.

9.5      Return of Confidential Information. Upon the expiration or termination
         of this Agreement, each party shall return to the other party all
         Confidential Information of the other party together with all copies
         made therefrom, except to the extent such information is required by
         InterDigital to exercise its rights under Section 13.

9.6      Survival/Final Delivery. The following provisions shall survive the
         termination or expiration of this Agreement: Article 9.6, Article 10,
         Article 12, Article 13, Article 14, Article 17, Article 20, Article 21,
         Article 23, Article 24, and Article 25. In addition, any provision of
         this Agreement necessary for a party to exercise rights or obligations
         arising prior to expiration or termination shall survive such
         expiration


                                       9




         or termination. Further, in the event of termination (except by
         Kenwood for cause), InterDigital shall be entitled, at its option, to
         receive delivery of Products for which a Purchase Order was issued
         prior to the date of termination.

10.      WARRANTY

10.1     Warranty. Kenwood warrants that the Products furnished under this
         Agreement comply with the Engineering Specifications, and are free from
         defects in material, design and workmanship.(the "Warranty") for a
         period of eighteen (18) months commencing from InterDigital's
         acceptance of a Product (the "Warranty Period").

10.2     Notification/Remedy. InterDigital shall promptly notify Kenwood of any
         Products not meeting the Warranty ("Defective Products"). Kenwood
         shall, at its expense, including all costs of transportation to the
         Shipping Destination, provide replacements for such Products within 60
         days of such notification. The period of Warranty for all replacement
         Products shall be eighteen (18) months commencing from InterDigital's
         acceptance of the replacement Product. In addition, Kenwood shall pay
         InterDigital, as liquidated damages for InterDigital's labor costs
         related to Product replacement, * (*) U.S. Dollars for each Defective
         Product. Unless otherwise requested by Kenwood, InterDigital shall
         return the Defective Product to Kenwood at Kenwood's cost and expense.
         Upon receipt of the defective product, Kenwood shall conduct analysis
         of cause and report to InterDigital. If Kenwood determines that the
         Defective Product is defective on breach of warranty as set forth in
         Section 10, all the expenses shall be born as set forth in Section
         10.2. If Kenwood determines otherwise and Interdigital agrees (which
         agreement shall not be uncommonly with held), InterDigital shall pay
         the price of Product and all the relevant expenses incurred for such
         replacement including, without limitation, ocean or air freight, import
         duty and custom clearance expenses and replacement charge of U.S.
         Dollars of each Defective Product.

10.3     Marking. Kenwood will include serial numbers and/or date stamps, as
         agreed to by InterDigital, on each Product to facilitate the Warranty
         tracking. For all replaced Products, Kenwood shall provide suitable
         notice either on the Product or in the Product packaging to permit
         warranty tracking of replaced Products.

10.4     Non-Waiver. This Warranty shall survive delivery and shall not be
         deemed waived by inspection, acceptance or payment by InterDigital
         pursuant to any provision of this Agreement or the Development
         Agreement. No representations given to Kenwood by an employee or agent
         of InterDigital shall be construed as a waiver of InterDigital's rights
         hereunder.

10.5     Warranty Limitation.  The Warranty does not extend to Products which
         fail or are damaged after delivery to InterDigital due to (i)
         InterDigital's improper handling, storage, operation, installation, use
         or maintenance thereof,(ii) InterDigital's improper assembly of the
         Product or subscriber unit or improper re-adjustment of the Product, or

- ----------
* Confidential treatment has been requested for the deleted text, which has been
  filed separately with the Securities and Exchange Commission.


                                       10




         (iii) Products which fail or are damaged due to a cause attribute to an
         InterDigital Component or to other circuits or components (other than
         the Product) manufactured by InterDigital.

10.6     Title Warranty.  Kenwood warrants that all Products, at delivery, are
         free and clear of all encumbrances and have fully marketable title.

10.7     LIMITATION. THE WARRANTIES AND ASSOCIATED REMEDIES SET FORTH IN THIS
         SECTION ARE EXPRESSLY IN LIEU OF AND INTERDIGITAL WAIVES ALL OTHER
         WARRANTIES AND ASSOCIATED REMEDIES, EXPRESSED OR IMPLIED, INCLUDING
         WITHOUT LIMITATION, ALL IMPLIED TERMS AND CONDITIONS AND WARRANTIES OF
         MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

11.      OUT-OF-WARRANTY SERVICE

         After the Warranty Period, InterDigital may repair Products and
         purchase from Kenwood service parts at the prices quoted by Kenwood.
         Kenwood shall provide replacement parts and/or Products during the term
         of this Agreement and for two years thereafter.

12.      INSURANCE AND INDEMNIFICATION

12.1     Indemnification. Either party shall, to the maximum extent permitted by
         law, indemnify and hold harmless the other party, its affiliates and
         subsidiaries and all offices, directors, employees and agents of such
         companies (collectively, "Indemnified Parties"), from against. For and
         in respect of any and all claims, investigations, proceedings,
         injuries, demands, liabilities, losses, expense, including without
         limitation attorney's fees, damages, judgements or settlements arising
         out of or resulting from the performance or non-performance under this
         Agreement of Either party, anyone directly or indirectly employed by
         either party or anyone whose acts either party may be liable. The
         obligations under this paragraph shall not be (a) construed to negate,
         abridge or otherwise reduce any other rights or obligations of
         indemnity which would otherwise exist as to any provisions or limits of
         insurance required by this Agreement.

12.2     Insurance. Each party shall secure and maintain insurance commensurate
         with the obligations and potential liabilities arising under this
         Agreement. Each party shall, upon the request of the other party,
         provide a description of the coverage secured, including deductibles,
         exclusions, term, and policy limits.

12.3     LIMITATION OF LIABILITY.  NEITHER PARTY SHALL BE LIABLE TO THE OTHER
         PARTY FOR LOST PROFITS, INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY
         OTHER KIND INCURRED ARISING OUT OF OR IN CONNECTION WITH THIS
         AGREEMENT.

13.      INTELLECTUAL PROPERTY

13.1     Pre-Existing Intellectual Property. Except as provided in Section 13.2,
         nothing contained in this Agreement will be deemed to grant to either
         party, either directly or by implication, estoppel or otherwise, any


                                       11




         title, ownership, license, or any interest whatsoever in, of or to
         Intellectual Property or Technical Material of the other party, whether
         existing prior to the Effective Date or developed thereafter.

13.2     Developed Proprietary Information. The Technical Material supplied or
         made specifically by Kenwood (or its contractors) under this Agreement
         and any Intellectual Property hereunder developed, produced or created
         by Kenwood (or its contractors) (collectively "Developed Information")
         shall be the joint property of InterDigital and Kenwood, subject to the
         following terms and conditions:

         (A)      InterDigital may use, sell, license, or otherwise transfer the
                  Developed Information without any accounting to Kenwood;
                  provided, however, that InterDigital shall notify Kenwood of
                  any license, sale, or other transfer of the Developed
                  Information to a third party;

         (B)      Kenwood may use the Developed Information for only the
                  manufacture of Products for InterDigital;

         (C)      InterDigital shall have the right to apply for any patents
                  arising out of Developed Information, in Kenwood and
                  InterDigital's name. Kenwood shall execute all documents
                  reasonably required for such applications. InterDigital shall
                  provide Kenwood with advance copies of significant patent
                  application filings for review and comment and will consider
                  such comments in good faith. InterDigital and Kenwood shall
                  share equally the cost of such patent filings; provided,
                  however, that Kenwood may elect not to have joint ownership in
                  such patents in which event Kenwood shall assign all of such
                  patent rights to InterDigital and execute all documentation
                  required for InterDigital to obtain patent protection in its
                  name and at its sole expense.

         (d)      Developed Information shall not include knowledge,
                  manufacturing process or designs or products developed,
                  produced, or created by Kenwood (or its contractors) prior to
                  the commencement of the Work or other than in conjunction with
                  the Work.

13.3     Use of Third Party Intellectual Property Rights.  In manufacturing the
         Product, Kenwood shall not use or rely on any method, process, product
         or other tangible or intangible element requiring the payment of
         royalties without the express written consent of InterDigital.  To the
         extent that InterDigital consents to Kenwood's use of any license or
         other right under any patents or patent application to perform the Work
         or develop, manufacture or supply the Products under this Agreement,
         Kenwood shall pay all royalties and license fees required pursuant
         thereto.

14.      ARBITRATION

         Any controversy, dispute, or claim arising out of or relating to this
         Agreement, any modification or extension hereof, or any breach hereof
         (including the question whether any particular matter is arbitrable


                                       12




         hereunder) which has not been settled after a meeting of the parties in
         a good faith effort to resolve their differences shall be resolved
         exclusively by arbitration under the Rules of Conciliation and
         Arbitration of the International Chamber of Commerce by three
         arbitrators chosen in accordance with said rules unless the parties
         agree to use fewer arbitrators. The arbitration shall take place in
         Paris, France and shall be conducted in English. The award of such
         arbitration shall be final and binding on both parties.

15.      FORCE MAJEURE

         If either party's performance of this Agreement is interfered with by
         reason of any circumstance beyond the reasonable control of the party
         affected, including without limitation, war (whether an actual
         declaration thereof is made or not), sabotage, insurrection, rebellion,
         riot or other act of civil disobedience, act of a public enemy, failure
         or delay in transportation, failure of or delay in performance of
         InterDigital's or Kenwood's obligations under this Agreement due to act
         of any government or any agency or subdivision thereof, judicial
         action, labor dispute, fire, accident, explosion, epidemic, storm,
         flood, earthquake, or other Act of God, or shortage of labor , fuel,
         raw material, or machinery, then the party affected shall be excused
         from such performance, but only for the period of time occasioned by
         such event. A party claiming a force majeure shall notify the other
         party within 10 working days of such force majeure event, providing the
         type of event, the expected delay, and the efforts being taken to
         minimize such delay. If any such interference extends for more than
         Ninety (90) days, both parties shall discuss to seek for the best
         course of action.

16.      NOTICES

16.1     Notice Requirements. Any notices required to be given under this
         Agreement shall be sent by registered air mail, facsimile or hand
         delivery to the other party at the address listed below:


         To InterDigital:
         ----------------

         INTERDIGITAL COMMUNICATIONS CORPORATION
         781 Third Avenue, King of Prussia
         Pennsylvania 19406-1409, USA
         Attn: WILLIAM J. MERRITT
         Tel: 610-878-5700
         Fax: 610-878-7844



         To Kenwood:
         -----------

         KENWOOD CORPORATION
         1-14-6, Dogenzaka
         Shibuya-ku, Tokyo 150 Japan


                                       13




         Attn: Katsuhito Ohashi
         Tel: 03-5457-7158
         Fax: 03-5457-7160

16.2     Receipt. Notices given pursuant to Section 16.1 shall be deemed to have
         been received Five (5) business days after sending in the case of
         registered air mail and at the time of receipt of the receiving party
         in the case of hand delivery and facsimile, unless earlier confirmed by
         the receiving party.

17.      SEVERABILITY

         In the even that, for any reason, any portion of this Agreement shall
         be determined to be illegal, unlawful or unenforceable, the remaining
         provisions of this Agreement shall, nevertheless remain in full force
         and effect and this Agreement shall be construed as if the illegal,
         unlawful or unenforceable provisions were not contained herein.

18.      SUBCONTRACTING

         Kenwood shall not subcontract any of the Work without the express
         written consent of InterDigital. Kenwood's use of subcontractor's shall
         not relieve Kenwood of its obligations hereunder and Kenwood shall be
         liable to InterDigital for all the acts and omissions of any
         subcontractor as if such act or omissions were made by Kenwood.

19.      LIENS.

         Kenwood shall not make nor permit to be made any attachments to the
         Product, or components thereof, of liens, encumbrances or claims for
         labor or material. Kenwood shall promptly remove and shall protect and
         hold InterDigital harmless from all such claims, liens and encumbrances
         arising from the manufacture, assembly and transit of the Product.

20.      WAIVER

         Any failure of either party to enforce at any time or for any period,
         any provisions of thus Agreement shall not be construed as a waiver of
         such provisions or of the right of the party thereafter to enforce each
         and every provision.

21.      ASSIGNMENT

         This Agreement shall not be assignable by either party without the
         prior written consent of the other party; provided, however, that
         either party may assign this Agreement to a subsidiary or affiliate of
         the assigning party by written notice to the other party.

22.      AMENDMENT

         This Agreement shall not be amended, altered, or modified except by an
         instrument in writing duly executed by the parties hereto.


                                       14




23.      ENTIRE AGREEMENT

         This Agreement constitutes the entire agreement of the parties hereto
         with respect to the subject matter hereof, and it supersedes all prior
         oral or written agreements, commitments, or understandings with respect
         to the matters provided for herein.

24.      HEADINGS

         Section headings contained in this Agreement are inserted for
         convenience of reference only, shall not be deemed to be a part of this
         Agreement for any purpose, and shall not in any way define or affect
         the meaning, construction, or scope of any of the provisions hereof.

25.      GOVERNING LAW

         This Agreement sets forth the rights and obligations of the parties
         hereto, and any claims or disputes relating thereto, shall be governed
         by and construed in accordance with the laws of the State of New York.
         Each party irrevocably submits to the jurisdiction of the courts of the
         state or country of the other party solely for the purposes of
         requiring the other party to submit to arbitration as required
         hereunder and for enforcing any award granted thereunder. Process may
         be served on either party by certified or registered U.S. mail or by
         globally recognized express mail service.

26.      TAXES.

         It is understood than no taxes, assessments, excises, duties,
         impositions or licenses will be levied, assessed or imposed on Kenwood
         by the U.S. Government on account of the Work or the Products. If,
         however, any such taxes, assessments, excises, duties, impositions, or
         licenses are levied, assessed or imposed on Kenwood by the U.S.
         Government on account of the Work or the Products, (excluding taxes on
         income) they shall be borne by InterDigital and all payments owing to
         Kenwood hereunder shall be net of any such taxes, levies or charges
         required to be withheld with respect to such payments.

27.      INDEPENDENT CONTRACTOR

         In making and performing this Agreement, InterDigital and Kenwood act
         and shall act at all times as independent contractors and nothing
         contained in this Agreement shall be construed or implied to create an
         agency, joint venture, partnership or employer and employee
         relationship between InterDigital and Kenwood.

28.      LABELING

         At InterDigital's request, Kenwood shall place appropriate notices or
         labels on all Products, and component parts thereto, being manufactured
         for InterDigital pursuant to this Agreement to indicate ownership by
         InterDigital. To the extent reasonably possible, the Product, and
         component parts thereto, shall be stored separately from other
         inventory


                                       15




         and conspicuously marked with labels indicating ownership by
         InterDigital.

29.      PUBLIC ANNOUNCEMENTS.

         Except as may be required by law, neither party shall issue any press
         release or make or cause to be made any public disclosure of this
         Agreement without the prior written consent of the other party.



                            [SIGNATURES ON NEXT PAGE]


                                       17




IN WITNESS WHEREOF, and intending to be legally bound, the undersigned parties
have duly executed this Agreement in duplicate effective on the day first
written above.

                                       INTERDIGITAL COMMUNICATIONS CORPORATION

Attest

/s/ Adrienne G. Juskalian               By /s/ Mark Lemmo
- -------------------------------         -----------------------------------
                                        Title General Manager



                                         KENWOOD CORPORATION

Attest

/s/ D. Ahasui                           By /s/ Y. Morimoto
- --------------------------------        -----------------------------------
                                        Title General Manager
                                              Strategic Business Development
                                              Department, R & D Division
            


                                       17