YWFHD33568HF Amplifier

HD Communications Model: HD33568 42-43 MHz, 1500 Watt RF Amplifier User Manual Model HD33568 RF Amplifier Rev. 1/19 1-1 COPYRIGHT This manual and the information of this document is the proprietary property of HD Communications Corporation. No part of this document may be reproduced or copied without the express written permission of HD Communications Corporation. Any unauthorized use of this manual or its contents is strictly prohibited. All Rights Reserved. DISCLAIMER AND LIMITATION OF LIABILITY The information contained in this manual is subject to change by HD Communications Corporation without prior notice. HD Communications Corporation makes no warranty of any kind, either expressed or implied, with respect to the information contained herein. HD Communications Corporation shall not be liable in damages, of whatever kind, as a result of the reliance on or use of the information contained herein. FCC Compliance notes THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION. NOTE: THE GRANTEE IS NOT RESPONSIBLE FOR ANY CHANGES OR MODIFICATIONS NOT EXPRESSLY APPROVED BY THE PARTY RESPONSIBLE FOR COMPLIANCE. SUCH MODIFICATIONS COULD VOID THE USER’S AUTHORITY TO OPERATE THE EQUIPMENT. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: - Reorient or relocate the receiving antenna. - Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. IMPORTANT SAFTEY INFORMATION Warning: • For safe operation and installation, please read this manual prior to using this product. • Practice all local facility and product safety instructions and precautions. • Failure to follow the manual instructions may cause death, personal injury or property damage. • HD Communications Corporation provides information concerning the hazards of the product and its use, but assumes no responsibility for any operator miss-use of the product or conflicting local safety practices • INTERLOCKS OR GROUNDING MUST NOT BE BYPASSED OR DISREGARDED Model HD33568 RF Amplifier Rev. 1/19 1-2 Table of Contents Safety Guidlines ........................................................................................................................................ 1-4 1.1 Important Safety Information .......................................................................................................................... 1-4 1.2 Rules for Safe Installation and Operation ........................................................................................................ 1-4 1.3 Cautions and Safety ......................................................................................................................................... 1-5 Product Overview ..................................................................................................................................... 2-8 2.1 Operation Overview......................................................................................................................................... 2-8 Specifications ............................................................................................................................................ 3-9 3.1 Physical Description ........................................................................................................................................ 3-9 3.2 Electrical Description ...................................................................................................................................... 3-9 3.3 General Specifications ..................................................................................................................................... 3-9 3.4 Equipment Identification ............................................................................................................................... 3-10 Installation ............................................................................................................................................... 4-11 4.1 Initial Inspection ............................................................................................................................................ 4-11 4.2 Environmental Requirements ........................................................................................................................ 4-11 4.3 Mechanical Requirements.............................................................................................................................. 4-11 4.4 Electrical Requirements ................................................................................................................................. 4-11 4.5 System Connections....................................................................................................................................... 4-12 Analog and Serial Interface ....................................................................................…

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Hoh- ,: Communications Corp. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA February 28, 2023 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID or Grantee Code: YWFHD33568 HD Communications Corp. ("the applicant") certifies that, as of the date of the filing of the application, we designate ourselves as the U.S. agent for service of process. Designated U.S. Agent Information: FRN: Name: HD Communications Corp. Address: 338 Jericho Tpk, Unit 387 Syosset, NY 11791 Contact Person: Mark Hersly Tel.: 631-588-3877 x112 Email: [email protected] Sincerely, � Mark Hers � President, HD Communications Corp. Rev 1/26/2023 338 Jericho Turnpike, Unit 387. Syosset, NY 11791 [email protected] www.rfamplifiers.com www.rfcomp.com 0 006075741

Hoh-.· Communications Corp. Federal Communications Commission Authorization and Evaluation Division 7435 Oakl and Mills Road Columbia, MD 21046 USA Date: February 28, 2023 Ref: Attestation Statements Part 2.911(d)(S)(ii) Filing FCCID:YWFHD33568 H D Communications Corp ("the applicant") cer tifies that, as of the date of the fi ling of the application, the applicant is not id entified on the Covered List as an entity pr oducting "covered" equipment. Sincerely, � President, HD Communications Corp. R ev 1/26/2023 338 Jericho Turnpike, Unit 387. Syosset, NY 11791 [email protected] www.rfamplifiers.com www.rfcomp.com

Нп C รเ ommunications Coro. Fede٢a! Communications Commission Authodzatlon and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: February 28, 2023 Ret: Attestation Statements Part 2٠911(d)(5)(ỉ) Filing FCCID:YWFHD33568 HD Communications Corp ("the applicant") certifies that the equipment for which authorization is sought is not "covered" equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, ٠٠/ Mark HeFsIy President, HD Communications Corp. Rev 1/26/2023 338 Jericho Turnpike, Unit 387. Syosset, NY 11791 [email protected] w^-rfampllTiers.com www.rfcomp.com

Ho� .:\ Communications Corp. December 16, 2022 T IMCO ENGINEERING, INC. 849 NW S tate Road 45 N ewberry, FL 32669 Subject: FCC ID: YWFHD33568 To Whom It May Concern: We , the undersigned, hereby authorize Sharon Hoffman at Timco Engineering Inc. on our behalf, to apply to the Federal Communications Commission. Any an d all acts carried out by Sharon Hoffman at Timco Engineering Inc. on our behalf shall have t he same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Regards, �, President, HD Communications Corp. 338 Jericho Turnpike, Unit 387. Syosset, NY 11791 [email protected] www.rfamplifiers.com www.rfcomp.com

Ho� .:\ Communications Corp. December 16, 202 2 TIMCO ENGINEERING, INC. 8 49 NW State Road 45 Newberry, FL 32669 Subject: FCC ID: YWFHD33568 This equipment meets the requirements of the FCC Rules, Part 90.203(e) and (g) as applicable. Programming of this product's transmit frequencies can be performed ONLY by the manufacturer or by service or maintenance personnel. The operator cannot program transmit frequencies using the equipment's external operation controls. Regards, �, President, HD Communications Corp. 338 Jericho Turnpike, Unit 387. Syosset, NY 11791 [email protected] www.rfamplifiers.com www.rfcomp.com

AN IIA COMPANY 849 NW State Road 45, Newberry, Florida 32669 (352) 472-5500 ● Certification: [email protected] ● Testing: [email protected] ● www.timcoengr.com March 31, 2023 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for Certification of FCC ID: YWFHD33568 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, HD Communications, Corp. requests confidential treatment of information accompanying this application as outlined below: Exhibit Type Schematics Circuit Description Parts List Tuning Procedure The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Pursuant to DA04-1705 June 15, 2004 of the Commission’s public notice, they also request temporary confidential treatment of information accompanying this application as outlined below for 180 days: Exhibit Type Internal Photos Test Set up Photos User manual Sincerely, Sharon Hoffman Agent

External Photos HD33568 Power Amplifier Front Panel Rear Panel Left Side Right Side Top front Top rear Bottom

EQUIPMENT IDENTIFICATION FCC ID: YWFHD33568 Model No. HD33568 Serial No. HD33568-001 AC Input 200-240 VAC, 50/60 Hz Frequency 42-43 MHz Date of Manufacture December 2022 Country of Origin USA

Internal Photos HD33568 Power Amplifier Power amp – top Power amp - bottom Driver – Top Driver – Bottom Filter & Coupler – Top Filter & Coupler – Bottom Controller – top Controller – bottom Controller personality PCB – Top Controller personality PCB – bottom Ethernet Adapter – Top Ethernet Adapter – bottom

Test Report# TR_5811-23_FCC 1.1310/ MPE_ Revision: 2 An IIA Company Te s t Report - FCC Par t 1.1310/ MPE Applicant: HD Communications Corp. Approved for Release By: Signature: Name & Title: Bruno Clavier, General Manager Date of Signature 11/1/2023 This test report shall not be reproduced except in full without the written and signed permission of Timco Engineering Inc. (IIA). This test report relates only to the items tested as identified and is not valid for any subsequent changes or modifications made to the equipment under test. Timco Engineering, Inc., an IIA Company 849 NW State Road 45, Newberry, Florida 32669 (352) 472-5500 / [email protected] Page 2 of 10 This test report shall not be reproduced except in full without the written and signed permission of Timco Engineering Inc. (IIA). Table of Contents 1. CUSTOMER INFORMATION ........................................................................................................................................................................... 3 2. LOCATION OF TESTING ................................................................................................................................................................................. 3 2.1 TEST LABORATORY .................................................................................................................................................................................................... 3 2.2 TESTING WAS PERFORMED, REVIEWED BY ................................................................................................................................................................4 3. TEST SAMPLE(S) (EUT/DUT) ........................................................................................................................................................................... 5 3.1 DESCRIPTION OF THE EUT ........................................................................................................................................................................................ 5 4. TEST METHODS & APPLICABLE REGULATORY LIMITS ............................................................................................................................ 6 4.1 TEST METHODS/STANDARDS/GUIDANCE: ............................................................................................................................................................... 6 4.1.1 FCC Limits for Maximum Permissible Exposure (MPE) .................................................................................................................. 6 4.2 EQUATIONS................................................................................................................................................................................................................ 7 5. RF EXPOSURE RESULTS .................................................................................................................................................................................. 8 6. HISTORY OF TEST REPORT CHANGES ........................................................................................................................................................ 9 Timco Engineering, Inc., an IIA Company 849 NW State Road 45, Newberry, Florida 32669 (352) 472-5500 / [email protected] Page 3 of 10 This test report shall not be reproduced except in full without the written and signed permission of Timco Engineering Inc. (IIA). 1. Customer Information Applicant: HD Communications Corp. Address: 338 Jericho Turnpike, Unit 387 Syosset NY 11791, United States 2. Location of Testing 2.1 Test Laboratory Timco Engineering Inc. is a subsidiary of Industrial Inspection & Analysis, Inc. (“IIA”). Testing was performed at Timco’s permanent laboratory located at 849 NW State Road 45, Newberry, Florida 32669 FCC test firm # 578780 FCC Designation # US1070 FCC site registration is under A2LA certificate # 0955.01 ISED Canada test site registration # 2056A EU Notified Body # 1177 For all designations see A2LA scope # 0955.01 Timco Engineering, Inc., an IIA Company 849 NW State Road 45, Newberry, Florida 32669 (352) 472-5500 / [email protected] Page 4 of 10 This test report shall not be reproduced except in full without the written and signed permission of Timco Engineering Inc. (IIA). 2.2 Testing was performed, reviewed by Dates of Testing: 12-20-2022 – 12-22-2022 Signature: Name & Title: Tim Royer, EMC Engineer Date of Signature 11/1/2023 Signature: Name & Title: Terri Allen, Technical Assistant Date of Signature 11/1/2023 Timco Engineering, Inc., an IIA Company 849 NW State Road 45, Newberry, Florida 32669 (352) 472-5500 / [email protected] Page 5 of 10 This test report shall not be reproduced except in full without the written and signed permission of Timco Engineering Inc. (IIA). 3. Test Sample(s) (EUT/DUT) The test sample was received: 12/20/2022 3.1 Description of the EUT A description as well as unambiguous identification of the EUT(s) tested. Where more than one sample is required for technical reasons (such as the use of connected units for the purpose of conducted output power testing where the product units will have integral antennas), each specific test shall identify which unit was tested. Identification FCC ID: YWFHD33568 Brief Description HF Amplifier Model(s) # HD33568 Firmware version 2.43.3 Software version 2.43.3 Serial Number 6 Technical Characteristics Frequency Range 42-43 MHz RF O/P Power (Max.) 1500 W Antenna Connector N Type Voltage Rating (AC or Batt.) 240V 60 Hz AC source Antenna Characteristics Antenna Frequency Range Mode / BW Antenna Gain 1 n/a n/a 0 dBi - Note: Information such as antenna gain, firmware/software numbers are provided by manufacturer and cannot be validated by the test lab. Timco Engineering, Inc., an IIA Company 849 NW State Road 45, Newberry, Florida 32669 (352) 472-5500 / [email protected] Page 6 of 10 This test report shall not be repro…

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Test Report# TR_5811-22_FCC 90_ Revision: 1 An IIA Company Test Report - FCC Par t 90 Applicant: HD Communications Corp. Approved for Release By: Signature: Name & Title: Bruno Clavier, General Manager Date of Signature 1/3/2023 This test report shall not be reproduced except in full without the written and signed permission of Timco Engineering Inc. (IIA). This test report relates only to the items tested as identified and is not valid for any subsequent changes or modifications made to the equipment under test. Timco Engineering, Inc., an IIA Company 849 NW State Road 45, Newberry, Florida 32669 (352) 472-5500 / [email protected] Page 2 of 32 This test report shall not be reproduced except in full without the written and signed permission of Timco Engineering Inc. (IIA). Table of Contents 1.1 PART 90 TEST RESULT SUMMARY ............................................................................................................................................................................4 2. LOCATION OF TESTING ................................................................................................................................................................................. 5 2.1 TEST LABORATORY .................................................................................................................................................................................................... 5 2.1 TESTING WAS PERFORMED, REVIEWED BY ................................................................................................................................................................ 5 3. TEST SAMPLE(S) (EUT/DUT) ........................................................................................................................................................................... 6 3.1 DESCRIPTION OF THE EUT ........................................................................................................................................................................................ 6 3.2 CONFIGURATION OF EUT ......................................................................................................................................................................................... 7 3.3 TEST SETUP OF EUT .................................................................................................................................................................................................. 7 4. TEST METHODS & APPLICABLE REGULATORY LIMITS ............................................................................................................................ 8 4.1 TEST METHODS/STANDARDS/GUIDANCE: ............................................................................................................................................................... 8 4.2 APPLIED LIMITS AND REGULATORY LIMITS: .............................................................................................................................................................. 8 5. MEASUREMENT UNCERTAINTY .................................................................................................................................................................... 8 6. ENVIRONMENTAL CONDITIONS ................................................................................................................................................................. 8 6.1 TEMPERATURE & HUMIDITY ...................................................................................................................................................................................... 8 7. LIST OF TEST EQUIPMENT AND TEST FACILITY ........................................................................................................................................ 9 7.1 LIST OF TEST EQUIPMENT ......................................................................................................................................................................................... 9 8. TEST RESULTS .................................................................................................................................................................................................. 11 8.1 POWER AT THE FINAL AMPLIFIER ............................................................................................................................................................................ 12 8.2 RF OUTPUT POWER ................................................................................................................................................................................................ 13 8.2.1 RF Power Output Plot, 42.06 MHz .................................................................................................................................................... 14 8.3 BANDWIDTH & EMISSION ....................................................................................................................................................................................... 15 8.3.1 99% Bandwidth Plot, 2.5 kHz FM, 42.06 MHz................................................................................................................................ 17 8.4 EMISSION LIMITATIONS, IN-BAND.......................................................................................................................................................................... 18 8.4.1 Emission Mask, 2.5 kHz FM, 42.06 MHz .......................................................................................................................................... 19 8.5 EMISSION LIMITATIONS, OUT-OF-BAND .............................................................................................................................................................. 20 8.5.1 Conducted Emissions, Below 1GHz, 42.06 MHz ...................................................................................…

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ANNEX B – Test Setup Photograph Exhibit 5812-22 FCC ID: YWFHD33568 Conducted Test Setup Radiated Testing, Table Setup Radiated Testing, Below 1 GHz Radiated Testing, Below 1 GHz #2 Frequency Stability Testing