Exhibit regarding Peoria Broadcaster Consent

0003-EX-PL-2007 Text Documents

CATERPILLAR, INC.

2007-08-31ELS_83911

Caterpillar Inc. FCC File No. 0003-EX-PL-2007 August 2007 Exhibit Regarding Local Broadcasters’ Consent for RF Immunity Testing in the Broadcast Bands The instant amendment also seeks FCC authorization to conduct RF immunity testing on the frequencies of the following radio and television stations that have consented to Caterpillar's proposed operation. The listed stations operate in the vicinity of the Caterpillar proving ground in Peoria, IL, where the proposed EMC testing will occur. Copies of the consent letters are attached hereto. Call sign Channel No. Community of License Frequency band (MHz) Television frequencies WCCU 27 Urbana, IL 548-554 W48CK 48 Sterling, IL 674-680 W51CT 51 Bloomington, IL 692-698 WRSP-TV 55 Springfield, IL 716-722 Radio frequencies WTRX-FM 229 Pontiac, IL 93.7 WJEZ 255 Dwight, IL 98.9 WBNQ 268 Bloomington, IL 101.5 WCSJ-FM 276 Morris, IL 103.1 WBWN 281 Le Roy, IL 104.1 W298AP 298 Springfield, IL 107.5

RIVL FLLUUNTING Fax:000050(105 May 9 ‘Ur Bi12 P.UL 805 Brady Street Davenport, lowa $2803 JOHN HEGEMAN s63.383.7 0 0 0 OPERATIONS/ENGINEERING DIRECTOR PHONE: 563—383—7132 FAX: 563—383—7165 DATE: ,M44’7 71 P ?’ numBER OF PAGES (INCLUDING COVER SHEET»: / TO: '/AI’A /D] ,//{// T]-— company NAME}/ CaT AILECTIRENMLS FAX NUMBER: 3 0 4 — acfif" (g F3 RE: Jesr mA RPEQlEPYT Zhnir — h tFaz~— MESSAGE: 7 alkXAWOC—TV"

KWL HLLUUNI ING FaxiDbo9%9( 105 CATERPILLAR® k Cat Electronics P. 0. Box 810 Mossyll, it. 61662:0¢10 s/7/2007 Doug Bierman — Chief Engineer kwac 805 Brady St. Davenport, 1A 52803 Dear Mr. Bierman: This letter follows—up on our earlier telephone conversation. On behalf of Caterpillar, Inc. ("Caterpillar"), this letter requests the consent of Young Broadcasting of Davenport, Inc., licensee of television station KWQC at Davenport, 1A for Caterpillar to conduct short (less than 10 seconds), low power radiofrequency ("RF") immunity testing on frequencies within your station‘s channel of operation at Caterpillar‘s proving grounds near Washington, Illinois. It is expected thatthe proposed RF immunity testing would occur no more than ten times per year. The technicaldetails of Caterpillar‘s proposed RF immunity testing are set forth in the attached technical information pages. Some background information on Caterpillar‘s need to conduct this testing is provided below. We are asking for your concurrence because your station is the channel 56 authorization nearest to our Peoria proving grounds location. Please review this letter and the attached technical information page. If Caterpillar‘s proposed testing is acceptable, please sign at the bottom of this letter where indicated and fax a copy to the undersigned. Background: Caterpillar is a world—leading manufacturer of heavy construction equipment with corporate headquarters in Peoria, IL. During development, our products are subjected to extensive testing to ensure product quality and to demonstrate compliance with numerous international and domestic regulations and standards. In particular, RF immunity testing is required for product safety and to meet several European Union Directives. RF immunity testing involves subjecting a machine‘s control system electronies to an electromagnetic field to ensure that such fields do not affect the operation of the electronics and/or machine. This testing is very important due to the proliferation of wireless devices and services that could possibly interfere with Caterpilar‘s machine electronics.

RUUL HLLUUNTINS Fax: 0000807105 May 2 U° — Si12 . _F.05 In the past, it has been possible to perform the majority of this RF immunity testing indoors at the component or subsystem level. However, as machines have become more electrically complex, it is difficult or impossible to test certain subsystems apart from the machine. In these cases, machine—level RF immunity testing is required. In many cases, these machine level tests can be performed indoors in a shielded chamber. However, in a few cases, due to the size of some of our products, it is not always possible to find a chamberlarge enough in which to test the machine, The only practical way to test this subset of machines is to conduct the tests outdoors. This type of outdoor testing is viewed as an option of last resort, and as such, is conducted infrequently (several times per year at most). Outdoor RF immunity testing consists of irradiating a machine with an electromagnetic field across a wide frequency range (typically 30 MHz to 2 GHz). Required field strengths range from 10 V/m to 100 V/m or more, depending on the standard in question. To produce the field, an antennais placed in close proximity to the machine, with a signal generator and amplifier being used to produce the RF energy. The antennautilized is typically a highly directional wideband log periodic antenna, which is pointed at the machine undertest. Typical output power from the amplifier is less than .5 KW, depending on antenna efficiency at the frequency in question. Starting at the lowest frequency of interest, the signal generator is stepped through the frequency range in increments of several MHz, dwelling on any particularfrequency for a duration of less than 10 seconds. The transmitted signal is either an unmodulated carrier or 80 percent AM modulated at 1 kHz. Request: Caterpillar is in the process of obtaining an experimental license from the FCC for the purpose of conducting outdoor RF immunity testing at our two proving ground locations in the United States (near Green Valley AZ, and Peoria, IL}. As an interim measure, Caterpillar has recently been granted a Special Temporary Authority (STA) by the ECC (callsign WCOXWS) to conduct the required testing at its two proving ground locations until such time as a grant of experimental license is obtained. This STA, however, excludes authorization to transmit on all frequencies used by FM radio and television facilities. To secure consent to operate on these broadcast frequencies, it was recommended that we coordinate locally with broadcast licensees to secure permission to conduct the RF immunity tests on these frequencies. We believe that Caterpillar‘s RF immunity testing transmissions will not result in harmful interference to yourstation for the following reasons: ® The distance between yourstation and our proposed test location is such that the risk of harmful interference is minimal * The proposed outdoor tests occur infrequently (once every several months at most)

KWQC ACCUUNI ING Fax:5035857165 May 9 ‘0f _ 8:12____P.04 The dwell time at any particular frequency during testing is less than 10 seconds The power levels being transmitted during testing are low {.5 KW ERP max) The transmitting antenna will be in close proximity to ground level, which will greatly limit the range of the transmitted signal, and will be located in the center of Caterpillar property * The transmitted signal will have a very narrow bandwidth (2 kHz max), which in itself reduces potential interference to television stations © We propose to make these narrowband transmissions 2 kHz above the bottom of the channel edge, so as to further minimize interference potential to analog and digital TV stations ® Preliminary interference studies have shown that the probability of interference to the stations in question will be extremely low (see attached technical documentation) Detailed technical information about our proposed operation, along with preliminary interference analysis, is attached. If this request seems reasonable, we respectfully request that you sign at the bottom of this document where indicated and return a copy to the undersigned via facsimile and mail. Thank you for your consideration. Please contact me if you have any questions about Caterpillar‘s proposed RF immunity testing. Sincerely, Andy Knitt CatElectronics Advanced Engineering knitt_andrew_a@cat.com 309—578—2724 Phone 309—578—1383 Fax DER THE FOLLOWING CONDITIONS: eceives complaints from viewers due to Caterpillar‘s operations,

EXECUTED APPROVAL PAGE W298AP, 107.5 MHz, SPRINGFIELD, IL

The dwell time at any particular frequency during testing is less than 10 seconds The power levels being transmitted during testing are low (.5 kW ERP max) ® The transmitting antenna will bein close proximity to ground level, which will greatly limit the range ofthe transmitted signal, and will be located in the center of Caterpillar property « The transmitted signal will have a very narrow bandwidth (2 kHz max), which in itself reduces potential interference to FM radio stations * Preliminary interference studies have shown that the probability of interference to the stations in question will be extremely low (see attached technical documentation) Detailed technical information about our proposed operation, along with preliminary interference analysis, is attached. If this request seems reasonable, we respectfully request that you sign at the bottom of this document where indicated and return a copy to the undersigned via facsimile and mail. Thank you for your consideration. Please contact me if you have any questions about Caterpillar‘s proposed RF immunity testing. Sincerely, Andy Knitt Cat Electronics Advanced Engineering knitt_andrew_a@cat.com 309—578—2724 Phone 309—578—1383 Fax REQUESTED CONSENT GRANTED: By: ZZM{%L Title: F—4¥ 7 Date: —2.1—0 TOTAL P.@1

* The dwell time at any particular frequency during testing is less than 10 seconds * The power levels being transmitted during testing are low (.5 kW ERP max) * The transmitting antenna will be in close proximity to ground level, which will grea: y . mit the range of the transmitted signal, and will be located in the center of Carerpillar property e The sransmitted signal will have a very narrow bandwidth (2 kHz max}, which in itsel! reduces potential interference to television stations * We propose to make these narrowband transmissions 2 kHz above the bottom of the channel edge, so as to further minimize interference potential to analog and digital TV stations # Prefiminary interference studies have shown that the probability of interference to the stations in question will be extremely low (see attached technical doc.mentation) Detailed technical information about our proposed operation, along with preliminary interference analysis, is attached. If this request seems reasonable, we respectfully request that you sign at the bottom of this docu—rent where indicated and return a copy to the undersigned via facsimile and mail. Thank you ‘or your consideration. Please contact me if you have any questions about Caterpillar‘s proposed RF immunitytesting. Sincerely, Andy Knitt Cat Electronics Advanced Engineering knitt_andrew_a@cat.com 309—578—2724 Phone 309—578— 383 Fax REQUESTED CONSENT GRANTED: By: ;{_fi:__&&a__ Title: (.6f. Eq «olC Dsté: .BIifig.._.__._

EXECUTED APPROVAL PAGE WCSJ-FM, 103.1 MHZ, MORRIS, IL

The dwell time at any particular frequency during testing is less than 10 seconds The power levels being transmitted during testing are low (.5 kW ERP max) s The transmitting antenna will be in close proximity to ground level, which will greatly limit the range of the transmitted signal, and will be located in the center of Caterpillar property ®— The transmitted signal will have a very narrow bandwidth (2 kHz max), which in itself reduces potential interference to FM radio stations e Preliminary interference studies have shown that the probability of interference to the stations in question will be extremely low (see attached technical documentation) Detailed technical information about our proposed operation, along with preliminary interference analysis, is attached. If this request seems reasonable, we respectfully request that you sign at the bottom of this document where indicated and return a copy to the undersigned via facsimile and mail, Thank you for your consideration. Please contact me if you have any questions about Caterpillar‘s proposed RF immunity testing. Sincerely, Andy Knitt Cat Electronics Advanced Engineering knitt_andrew_a@cat.com 309—578—2724. Phone 309—578—1383 Fax REQUESTED CONSENT GRANTEDy

09710 2007 14:18 FAX 3087645783 #QAD— TV @00 1/003 CATERPILLAR® | ~_ cz=>« Cat Electronics P. 0. Box 610 Mossville, IL 61562—0810 6/15/2007 Rick Serre — Chief Engineer WQAD—TV—DT NewsChannel8 3003 Park 16°"Street Moline, IL 61265 Dear Mr. Serre: This letter follows up on a voicemail that | left you earlier today. On behalf of Caterpillar, Inc. ("Caterpillar"), this letter requests the consent of Local TV LLC, licensee of television station WQAD—TV at Moline, IL for Caterpillar to conduct short {less than 10 seconds}, low power radiofrequency ("RF") immunity testing on frequencies within yourstation‘s channel of operation at Caterpillar‘s proving grounds near Washington, Illinois. It is expected that the proposed RF immunity testing would occur no more than ten times per year. The technical details of Caterpillar‘s proposed RF immunity testing are set forth in the attached technical information pages. Some background information on Caterpillar‘s need to conduct this testing is provided below. We are asking for your concurrence because your station is the channel 38 authorization nearest to our Peoria proving grounds location. Please review this letter and the attached technical information page. If Caterpillar‘s proposed testing is acceptable, please sign at the bottom ofthis letter where indicated and fax a copy to the undersigned. Background: Caterpillar is a world—leading manufacturer of heavy construction equipment with corporate headquarters in Peoria, IL. During development, our products are subjected to extensive testing to ensure product quality and to demonstrate compliance with numerousinternational and domestic regulations and standards. in particular, RF immunity testing is required for product safety and to meet several European Union Directives. RF immunitytesting involves subjecting a machine‘s control system electronics to an electromagnetic field to ensure that such fields do not affect the operation of the electronics and/or machine. This testing is very important due to the proliferation of wireless devices and services that could possibly interfere with Caterpillar‘s machine electronics.

08/10 2007 14:18 FAX 3097645763 #QAD— TV 002/003 In the past, it has been possible to perform the majority of this RF immunitytesting indoors at the component or subsystem level, However, as machines have hecome more electrically complex, it is difficult or impossible to test certain subsystems apart from the machine. in these cases, machine—level RF immunity testing is required. in many cases, these machine level tests can—be performed indoors in a shielded chamber. However, in a few cases, due to the size of some of our products, it is not always possible to find a chamber large enough in which to test the machine. The only practical way to test this subset of machines is to conduct the tests outdoors. This type of outdoor testing is viewed as an option of last resort, and as such, is conducted infrequently (several times per year at most). Outdoor RF immunity testing consists of irradiating a machine with an electromagnetic field across a wide frequency range (typically 30 MHz to 2 GHz). Required field strengths range from 10 V/m to 100 V/m or more, depending on the standard in question. To produce the field, an antennais placed in close proximity to the machine, with a signal generator and amplifier being used to produce the RF energy. The antenna utilized is typically a highly directional wideband log periodic antenna, which is pointed at the machine under test. Typical output power from the amplifier is less than .5 kW, depending on antenna efficiency at the frequency in question. Starting at the lowest frequency of interest, the signal generator—is stepped through the frequency range in increments of several MHz, dwelling on any particular frequency for a duration of less than 10 seconds. The transmitted signal is either an unmodulated carrier or 80 percent AM modulated at 1 kHz. Request: Caterpillar is in the process of obtaining an experimental license from the FCC for the purpose of conducting outdoor RF immunity testing at our two proving ground locations in the United States (near Green Valley AZ, and Peoria, IL). As an interim measure, Caterpillar has recently been granted a Special Temporary Authority (STA) by the FCC (callsign WCgXWS5) to conduct the required testing at its two proving ground locations until such time as a grant of experimental license is obtained. This STA, however, excludes authorization to transmit on all frequencies used by FM radio and television facilities. To secure consent to operate on these broadcast frequencies, it was recommended that we coordinate locallywith broadcast licensees to secure permission to conduct the RF immunity tests on these frequencies. We believe that Caterpillar‘s RF immunity testing transmissions will not result in harmful interference to your station for the following reasons: * The distance between your station and our proposed test locationis such that the risk of harmful interference is minimal * The proposed outdoor tests occur infrequently (once every several months at most) < «$.

o9/10 2007 14:18 FAX 3087645783 aAD—TV ©003/003 * The dwell time at any particular frequency during testing is less than 10 seconds * The power levels being transmitted during testing are low (.5 kW ERP max) * The transmitting antenna will be in close proximity to ground level, which will greatly limit the range of the transmitted signal, and will be located in the center of Caterpillar property * The transmitted signal will have a very narrow bandwidth (2 kHz max), which in itself reduces potential interference to television stations * We propose to make these narrowband transmissions 2 kHz above the bottom of the channel edge, so as to further minimizeinterference potential to analog and digital TV stations ' * Preliminary interferencestudies have shown that the probability of interference to the stations in question will be extremely low (see attached technical documentation) Detailed technical information about our proposed operation, along with preliminary interference analysis, is attached. If this request seems reasonable, we respectfully request that you sign at the bottom of this document where indicated and return a copy to the undersigned via facsimile and mail. tC Thank you for your consideration. Please contact me if you have any questions about Caterpillar‘s proposed RF immunity testing. ‘ Sincerely, Andy Knitt Cat Electronics Advanced Engineering 509376e724Phove . Heemssuys Cemko fae. | c/one — ts 3/12[2e00 309—578—1383 Fax G TED: —FF Oukinity s 'é% uk 0 5 m zo D & 3 0 m 5 —~ 2'@" Jera@mime x Haavedl 7 ‘innrotncE has /Ly/meo ou 4e permissiys aitl * be adaow —

04/16/2007 16:18 2175234410 WRSP—TV PAGE 01/02 €3 FOX® From: Jack Richardson WRSP/WCCU Television S Al m l i@fififi“, otHG OC To: Andy Knitt Cat Electronics Adv. Engineering Simtiag* Date: April 16, 2007 Fax #: 309—578—1383 Pages (including this one): Two (2) lEE Good luck in your testing! Jack 1(574 & FOX 55/27 lIlinois 3003 Old Rochester Rd. Springfield, IL 62703 www.foxillinois.com 3CN 2S HJoU s E..

04/16/ 2007 16:18 2175234410 WRSP—TV PAGE 2702 The transmitting antenna will be in close proximity to ground level, which will greatly limit the range of the transmitted signal, and will be located in the center of Caterpillar property The transmitted signal will have a very narrow bandwidth (2 kH2 max}, which in itself reduces potential interference to television stations We propose to make these narrowband transmissions 2 kHz above the bottom of the channel edge, so as to further minimize interference potentialto analog and digital TV stations Preliminary interference studies have shown that the probability of interference to the stations in question will be extremely low (see attached technical documentation) Detailed technical information about our proposed operation, along with preliminary interference analysis, is attached. If this request seems reasonable, we respectfully request that you sign at the bottom of this document where indicated and return a copy to the undersigned via facsimile and mail. Thank you for your consideration. Please contact me if you have any questions about Caterpillar‘s proposed RF immunity testing. Sincerely, Andy Knitt Cat Electronics Advanced Engineering knitt_andrew_a@cat.com 309—578—2724 Phone 309—578—1383 Fax REQUESTED CONSENT GRANTED: By: Title: wL, Date: 9// *+30f7—

AMTCLMCERDT 09000 WTEL—WNEL~WSRL 217 483 1112 P. 01 NetworkKnowledge® wWMEC / WQEC / WSEC PUBLIC TELEVISION FOR WEST CENTRAL ILLINOIS FACSIMILE TRANSMITTAL SHEET To: FROM: Andy Knitt Rich Plotkin Company: Date: Cat Electronics Advanced Engineering 51112007 FAX NUMBER: TOTAL NO. OF PAGES INCLUDING COvER: 309.678.1383 Four (4) PHONE NUMBER: Rre: 309,578.2724 Testing Agreement D URGENT D FOR REVIKW AS REQUESTRD O rcase worny C rrase RECYCLE woves/commars Andy, Here‘s the consent form for your RF testing on Channel 14. Good luck with the process ... please feel free to contact me should you require any further information about our facility. Regards, Rich Plotkin, V.P. Engineering, Operations & Production Phone: 217—483—7887 x235 // Pacsimile: 217—483—1112 WMEC/WoEC/WSEC 1475 East Plummer Blvd Chatham, Iilinois 62629

May—11—2007 U9:55 WMEC—WhicC—WSEC 217 485 1112 P. U2 Caterpillar Inc. GATEHPI I_l_AB® Cat Electronics P. 0. Box 610 Mossville, iL 61552—0610 4/24/2007 Mr. Rich Plotkin— VP of Operations and Engineering WSEC P.0. Box 6248 Springfield, IL 62708 Dear Mr. Plotkin: This letter follows—up on our earlier telephone conversation. On behalf of Caterpillar, Inc. ("Caterpillar"), this letter requests the consent of the West Central Illinois Educational Telecommunications Corp., licensee of television station WSEC at Jacksonville, Illinois for Caterpillar to conduct short (less than 10 seconds}, low power radiofrequency ("RF") immunity testing on frequencies within your station‘s channel of operation at Caterpillar‘s proving grounds near Washington, Illinois.It is expected that the proposed RF immunity testing would occur no more than ten times per year. The technical details of Caterpillar‘s proposed RF immunitytesting are set forth in the attached technical information pages. Some background information on Caterpillar‘s need to conduct this testing is provided befow. We are asking for your concurrence because yourstation is the channel 14 authorization nearest to our Peoria proving grounds location. Please review this letter and the attached technical information page. If Caterpillar‘s proposed testing is acceptable, please sign at the bottom of this letter where indicated and fax a copy to the undersigned. Background: Caterpillar is a world—leading manufacturer of heavy construction equipment with corporate headquarters in Peoria, IL, During development, our products are subjected to extensive testing to ensure product quality and to demonstrate compliance with numerousinternational and domestic regulations and standards. In particular, RF immunity testing is required for product safety and to meet several European Union Directives. RF immunity testing involves subjecting a machine‘s control system electronics to an electromagnetic field to ensure that such fields do not affect the operation of the electronics and/or machine. This testing is very important due to the proliferation of wireless devices and services that could possibly interfere with Caterpillar‘s machine electronics.

MHYSLL~200 r| U9—55 WNIEUOWbicL~WoeL err 403 1112 .43 In the past, it has been possible to perform the majority of this RF immunity testing indoors at the component or subsystem level. However, as machines have become more electrically complex, it is difficult or impossible to test certain subsystemsapart from the machine. In these cases, machine—level RF immunity testing is required. In many cases, these machine level tests can be performed indloors in a shielded chamber. However, in a few cases, due to the size of someof our products, it is not always possible to find a chamber large enough in which to test the machine. The only practical way to test this subset of machinesis to conduct the tests outdoors. This type of outdoortesting is viewed as an option of last resort, and as such, is conducted infrequently (several times per year at most). Outdoor RF immunity testing consists of irradiating a machine with an electromagnetic field across a wide frequency range (typically 30 MHz to 2 GHz). Required field strengths range from 10 V/m to 100 V/m or more, depending on the standard in question. To produce the field, an antenna is placed in close proximity to the machine, with a signal generator and amplifier being used to produce the RF energy. The antenna utilized is typically a highly directional wideband log periodic antenna, which is pointed at the machine under test. Typical output power from the amplifier is less than .5 kW, depending on antenna efficiency at the frequency in question. Starting at the lowest frequency of interest, the signal generator is stepped through the frequency range in increments of several MHz, dwelling on any particular frequency for a duration of less than 10 seconds. The transmitted signal is either an unmodulated carrier or 80 percent AM modulated at 1 kHz. Request: Caterpillar is in the process of obtaining an experimental license from the FCC for the purpose of conducting outdoor RF immunity testing at our two proving ground Jocations in the United States (near Green Valley AZ, and Peoria, IL). As an interim measure, Caterpillar has recently been granted a Special Temporary Authority (STA) by the FCC (callsign WC9XWS) to conduct the required testing at its two proving ground focations until such time as a grant of experimental license is obtained. This STA, however, excludes authorization to transmit on all frequencies used by FM radio and television facilities. To secure consent to operate on these broadcast frequencies, it was recommended that we coordinate locally with broadcast licensees to secure permission to conduct the RF immunity tests on these frequencies. We believe that Caterpillar‘s RF immunity testing transmissions will not result in harmful interference to your station for the following reasons: * The distance between your station and our proposed test lacation is such that the risk of harmful interference is minimal *« The proposed outdoor tests occur infrequently (once every several months at most) —2—

MAY—11—2006 409554 SPEC—MEEC—WSEL 217 483 1112 P. Bd The dwell time at any particular frequency during testing is less than 10 seconds The power levels being transmitted during testing are low (.5 kW ERP max) * The transmitting antenna will be in close proximity to ground level, which will greatly limit the range of the transmitted signal, and will be located in the center of Caterpillar property e The transmitted signal will have a very narrow bandwidth (2 kHz max), which in itself reduces potential interference to television stations © We propose to make these narrowband transmissions 2 kHz above the bottom of the channel edge, so as to further minimize interference potentialto analog and digital TV stations e Preliminary interference studies have shown that the probability of interference to the stations in question will be extremely low (see attached technical documentation) Detailed technicalinformation about our proposed operation, along with pretiminary interference analysis, is attached. If this request seems reasonable, we respectfully request that you sign at the bottom of this document where indicated and return a copy to the undersigned via facsimile and mail. Thank you for your consideration. Please contact me if you have any questions about Caterpillar‘s proposed RF immunity testing. Sincerely, Andy Knitt Cat Electronics Advanced Engineering knitt_andrew_a@cat.com 309—578—2724 Phone 309—578—1383 Fax REQUESTED CONSENT GRANTED: ay _4ho Title: —~ Ext o Date: < i CB

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* The dwell time at any particular frequency during testing is less than 10 seconds * The powerlevels being transmitted during testing are low (.5 kW ERP max) * The transmitting antenna will be in close proximity to ground level, which will greatly limit the range of the transmitted signal, and will be located in the center of Caterpillar property * The transmitted signal will have a very narrow bandwidth (2 kHz max), which in itself reduces potential interference to FM radio stations * Preliminary interference studies have shown that the probability of interference to the stations in question will be extremely low (see attached technical documentation) Detailed technicalinformation about our proposed operation, along with preliminary interference analysis, is attached. If this request seems reasonable, we respectfully request that you sign at the bottom of this document where indicated and return a copy to the undersigned via facsimile and mail. Thank you for your consideration. Please contact me if you have any questions about Caterpillar‘s proposed RF immunity testing. Sincerely, Andy Knitt Cat Electronics Advanced Engineering knitt_andrew_a@cat.com 309—578—2724 Phone 309—578—1383 Fax REQUESTED CONSENT GRANTED: By: Title: (f‘g p A Date:

TWB ornmianad nudd rhue uiras Caterpillar Inc. GATEH P".l.AH® Gat Electronics P. 0. Box 610 Mossvile, iL. 61552—0810 a/13/2007 Charlie Boyd — Chief Engineer WWTO 420 E. Stevenson Rd. Ottawa, IL 61350 Dear Mr. Boyd, This letter follows—up on our earlier telephone conversation. On behalf of Caterpillar, Inc. ("Caterpillar"), this letter requests the consent of TCCSA, Inc., D.B.A. Trinity Broadcasting Network, licensee of television stations WWTO at LaSalle, Illinois, W29BG at Decatur, Illinois, and W51CT at Bloomington,Illinois for Caterpillar to conduct short (less than 10 seconds}, low power radiofrequency ("RF") immunity testing on frequencies within your stations‘ channels of operation at Caterpillar‘s proving grounds near Washington, Illinois. It is expected that the proposed RF immunity testing would occur no more than ten times per year. The technical details of Caterpillar‘s proposed RF immunity testing are set forth in the attached technicalinformation pages. Some background information on Caterpillar‘s need to conduct this testing is provided below. We are asking for your concurrence because your stations are the channel 10, 29, and 51 authorizations nearest to our Peoria proving grounds location. Please review this letter and the attached technical information page. If Caterpillar‘s proposed testing is acceptable, please sign at the bottom of this letter where indicated and fax a copy to the undersigned. Background: Caterpillar is a world—leading manufacturer of heavy construction equipment with corporate headquarters in Peoria, IL. During development, our products are subjected to extensive testing to ensure product quality and to demonstrate compliance with numerousinternational and domestic regulations and standards. in particular, RF immunity testing is required for product safety and to meet several European Union Directives. RF immunity testing involves subjecting a machine‘s control system electronicsto an electromagnetic field to ensure that such fields do not affect the operation of the electronics and/or machine. This testing is very important due to the proliferation of wireless devices and services that could possibly interfere with Caterpillar‘s machine electronics. 1 o8

RERC rhoc uerus In the past, it has been possible to perform the majority of this RF immunity testing indoors at the component or subsystem level. However, as machines have become more electrically compley,it is difficult or impossible to test certain subsystems apart from the machine. in these cases, machine—level RF immunity testing is required. in many cases, these machine level tests can be performed indoorsin a shielded chamber. However, in a few cases, due to the size of some of our products, it is not always possible to find a chamber large enough in which to test the machine. The only practical way to test this subset of machines is to conduct the tests outdoors. This type of outdoor testing is viewed as an option of last resort, and as such, is conducted infrequently (several times per year at most). Outdoor RF immunity testing consists of irradiating a machine with an electromagnetic field across a wide frequency range (typically 30 MHz to 2 GHz). Required field strengths range from 10 V/m to 100 V/m or more, depending on the standard in question. To produce the field, an antenna is placed in close proximity to the machine, with a signal generator and amplifier being used to produce the RF energy. The antenna utilized is typically a highly directional wideband log periodic antenna, which is pointed at the machine under test. Typical output powerfrom the amplifier is less than.5 kW, depending on antenna efficiency at the frequency in question. Starting at the lowest frequency of interest, the signal generatoris stepped through the frequency rangein increments of several MHz, dwelling on any particular frequency for a duration of less than 10 seconds. The transmitted signal is either an unmodulated carrier or 80 percent AM modulated at 1 kHz. Request: Caterpillar is in the process of obtaining an experimental license from the FCC for the purpose of conducting outdoor RF immunity testing at our two proving ground locationsin the United States (near Green Valley AZ, and Peorta, IL). As an interim measure, Caterpillar has recently been granted a Special Temporary Authority (STA) by the FCC (callsign WCgXWS) to conduct the required testing at its two proving ground locations until such time as a grant of experimental license is obtained. This STA, however, excludes authorization to transmit on all frequencies used by FM radio and television facilities. To secure consentto operate on these broadcast frequencies, it was recommended that we coordinate locally with broadcast licensees to secure permission to conduct the RF immunity tests on these frequencies. We believe that Caterpillar‘s RF immunity testing transmissions will not result in harmful interference to your station for the following reasons: * The proposed outdoortests occurinfrequently (once every several months at most) * The dwell time at any particular frequency during testing is less than 10 seconds ~20f 8«

SUEEREENNT 29RCC 19250002058 WWTO PaGE 03/83 The power levels being transmitted during testing are low (.5 kW ERP max) ®— The transmitting antenna will be in close proximity to ground level, which will greatly limit the range of the transmitted signal, and will be located in the center of Caterpillar property * The transmitted signal will have a very narrow bandwidth (2 kHz max), which in itself reduces potential interference to television stations «_ We propose to make these narrowband transmissions 2 kHz above the bottom of the channel edge, so as to further minimize interference potential to analog and digital TV stations * Preliminary interference studies have shown that the probability of interference to the stations in question will be extremely low (see attached technical documentation} Detailed technical information about our proposed operation, along with preliminary interference analysis, is attached. If this request seems reasonable, we respectfully request that you sign at the bottom of this document where indicated and return a copy to the undersigned via facsimile and mail. Thank you for your consideration. Please contact me if you have any questions about Caterpillar‘s proposed RF immunity testing. Sincerely, Andy Knitt Cat Electronics Advanced Engineering knitt_andrew_a@cat.com 309—578—2724 Phone 309—578—1383 Fax By: CM 6‘%‘9 itle: E:‘ L4 g:te: Lf—~[3=C7 ~3 o( 8—


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Document Modified: 2007-08-30 10:04:29
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