O35-AIO0300WLPFM Broadcast Transmitter

Federal Communications Commission Authorization and Evaluation Division June 12, 2024 To whom it may concern: A sentence will be added to the important safety information pages in the manual, as follows: To satisfy FCC RF exposure guidelines, this device must be connected to a suitable antenna in order to produce the specific characteristics of a 100w FM signal operating at 30 meters height above average terrain (HAAT). At minimum, for general public exposure this device and its antenna must operate with a separation distance of at least 4 meters from all persons. Limited exposure at closer distances may be undertaken for maintenance purposes, but RF exposure guidelines should be respected and RF meters used to measure actual exposure levels. Sincerely, Tony Peterle

SYSTEMS s PERFORMANCE .... a: � t ICES Federal Communications Commission Authorization and Evaluation Division 7435 O akland Mills Road Columbia, MD 21046 USA Date: 03/04/2024 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: O35-AlO0300W W orldcast Systems, Inc. ("the applicant") certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing "covered" equipment. Sincerely, Tony Peterle Worldcast Systems, Inc. ( J

SYSTEMS s PERFORMANCE ..... a: ..... � ms Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, M D 21046 USA Date: 03/04/2024 Ref: Attestation Statements Part 2. 91l(d)(S)(i) Filing FCC ID: O3 5-AIO0300W Worldcast Systems, Inc. ("the applicant") certifies that the equipment for which authorization is soug ht is not "covered" e quipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, �� ------ Tony Peterle Worldcast Systems, Inc. ( J

SYSTEMS 5 PERFORMANCE ...... cc ..... � , ICES Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills R oad Columbia, MD 21046 USA Date: 03/04/2024 Ref: Attestation Statements Part 2.911{d)(7) Filing FCC ID 035-AlO0300W Worldcast Systems, Inc. ("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: 0015217474 Name: Worldcast Systems, Inc. Address: 19595 NE 10 th Av e Suite A, Miami FL 33179 Contact Person: Tony Peterle Tel.: 796 493 8734 Em ail: [email protected] Sincerely, Tony Peterle Worldcast Systems

Sharon Hoffman | Sales and Marketing TIMCO ENGINEERING, INC., An IIA Company 13146 NW 86th Drive, Suite 400, Alachua, FL 32615 To whom it may concern – This letter certifies that the Ecreso AiO transmitters share a common hardware platform between the 100W and 300W models. The only physical difference is a larger power supply in the 300W, with a correspondingly larger DC voltage connection on the motherboard. Thank you, Tony Peterle Worldcast Systems

Federal Communications Commission Authorization and Evaluation Division April 25, 2024 Confidentiality Request regarding application for certification of FCC ID: 035-AIO0300W Pursuan t to Sections 0.457 and 0.459 o f the Commission’s Rules, we her eby request confidential treatment of information accompanying this application as outlined below: Exhibit Type Schematics, block diagram, circuit description confidential, tuning procedure, Parts List 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, we also request temporary confidential treatment of information accompanying this application as outlined below for 180 days Exhibit Type Internal Photos, Test Set up Photos Sincerely, Tony Peterle

Timco Engineering, Inc. 13146 NW 86 th Drive, Suite 400 Alachua, FL 32615 SUBJECT: Application for Certification for FCC ID: 035-AIO0300W 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 and ISED on our equipment. Any and all acts carried out by Sharon Hoffman at Timco Engineering Inc. on our behalf shall have the 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, Tony Peterle Worldcast Systems April 25, 2024

External photographs Label ECRESO FM 300W AIO series O35-AIO0300W 2 External photographs: FRONT VIEW REAR VIEW 3 Top view 4 Bottom view 5 Right side view 6 Left side view Labels: Format 25x50 mm

3 Labels: Format 25x50 mm 4 Locations labels:

Test Report# TR_12219-24_FCC 1.1310/ MPE_ Revision: 1 Te s t Report - FCC Par t 1.1310/ MPE Applicant: Worldcast Systems, Inc. Approved for Release By: Signature: Name & Title: Timothy Royer, Date of Signature 2/15/2024 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. Industrial Inspection & Analysis 13146 NW 86 th Drive, Suite 400, Alachua, Florida 32615 (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 Industrial Inspection & Analysis. Table of Contents 1. APPLICANT 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 Industrial Inspection & Analysis 13146 NW 86 th Drive, Suite 400, Alachua, Florida 32615 (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 Industrial Inspection & Analysis. 1. Applicant Information Applicant: Worldcast Systems, Inc. Address: 19595 10th Avenue NE Suite A Miami, Florida, 33179, 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 IIA’s permanent laboratory located at 13146 NW 86 th Drive, Suite 400, Alachua, Florida 32615. 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 Industrial Inspection & Analysis 13146 NW 86 th Drive, Suite 400, Alachua, Florida 32615 (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 Industrial Inspection & Analysis. 2.2 Testing was performed, reviewed by Dates of Testing: 2/8/2024 – 2/12/2024 Signature: Name & Title: Tim Royer, EMC Engineer Date of Signature 2/15/2024 Signature: Name & Title: Kristoffer Costa, EMC Technician Date of Signature 2/15/2024 Industrial Inspection & Analysis 13146 NW 86 th Drive, Suite 400, Alachua, Florida 32615 (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 Industrial Inspection & Analysis. 3. Test Sample(s) (EUT/DUT) The test sample was received: 2/7/2024 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: O35-AIO0300W Brief Description LPFM Broadcast Transmitter Model(s) # AIO300W, AIO100W Firmware version N/A Software version V3.1.0 Serial Number EA030102 Technical Characteristics Frequency Range 88 MHz- 108 MHz RF O/P Power (Max.) 300W Modulation FM Bandwidth & Emission Class F3E Duty Cycle 100% Antenna Connector N Type Voltage Rating (AC or Batt.) 110VAC 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. Industrial Inspection & Analysis 13146 NW 86 th Drive, Suite 400, Alachua, Florida 32615 (352) 472-5500 / [email protected] Page 6 of 10 This test report shall not be reproduced except in full without the written and signed permiss…

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Test Report# TR_12219-24_FCC 73_ Revision: 3 Test Report - FCC Part 73/ TBC Applicant: Worldcast Systems, Inc. Approved for Release By: 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. Signature: Name & Title: Tim Royer, EMC Engineer Date of Signature 6/18/2024 Signature: Name & Title: Kristoffer Costa, EMC Technician Date of Signature 6/18/2024 Industrial Inspection & Analysis 13146 NW 86 th Drive, Suite 400, Alachua, Florida 32615 (352) 472-5500 / [email protected] Page 2 of 39 This test report shall not be reproduced except in full without the written and signed permission of Industrial Inspection & Analysis. Table of Contents 1. APPLICANT INFORMATION ........................................................................................................................................................................... 4 1.1 TEST RESULT SUMMARY ............................................................................................................................................................................................4 2. LOCATION OF TESTING ................................................................................................................................................................................. 5 2.1 TEST LABORATORY .................................................................................................................................................................................................... 5 2.2 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 NECESSARY BANDWIDTH (SOUND BROADCASTING) ............................................................................................................................................ 12 8.2 RF OUTPUT POWER ................................................................................................................................................................................................ 13 8.2.1 RF Output Power Plot, 88 MHz .......................................................................................................................................................... 14 8.2.2 RF Output Power Plot, 98 MHz .......................................................................................................................................................... 15 8.2.3 RF Output Power Plot, 108 MHz ........................................................................................................................................................ 16 8.3 OCCUPIED BANDWIDTH & EMISSION MASK ......................................................................................................................................................... 17 8.3.1 20dB Bandwidth Plot, 88 MHz ............................................................................................................................................................ 18 8.3.2 20dB Bandwidth Plot, 98 MHz....................................…

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