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MMA901050MOBILE TRANSCEIVER

Midland Radio Corporation
MOBILE TRANSCEIVER - FCC ID MMA901050 - Midland Radio Corporation
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Application Details

Equipment Class
TNB - Licensed Non-Broadcast Station Transmitter
Date of Grant
Jan 29, 2007
Application Purpose
Original Equipment
Date of Application
Jan 29, 2007
Equipment Note
MOBILE TRANSCEIVER
Frequency Range
150.00000000 - 174.00000000
Company
Midland Radio Corporation
Country
United States

Documents & Files

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Users Manual

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Cover Letter(s)

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External Photos

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ID Label/Location Info

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Internal Photos

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Parts List/Tune Up Info

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RF Exposure Info

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Test Report

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Test Setup Photos

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Document Text

Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.

Users Manual

Syn-Tech III P25 Mobile Radio OPERATION MANUAL 680-090-2041 MIDLAND Syn-Tech III P25 MOBILE RADIO OPERATION MANUAL Ver. 4.1 http://www.midlandradio.com Syn-Tech III P25 Mobile Radio OPERATION MANUAL 680-090-2041 i OUR THANKS TO YOU AND CUSTOMER ASSISTANCE PREFACE Thank you for purchasing a MIDLAND Syn-Tech III P25 Mobile Radio. Properly used, this product will give you many years of reliable service. To get the most out of your purchase, be sure to carefully read this manual and keep it on hand for later reference when needed. Before installing and using your radio, please read this operation manual. CUSTOMER ASSISTANCE Should you encounter any problems with this product, or not use its features, please refer to this operation manual. If you require further assistance after reading this manual, please contact your local dealer. FOR WARRANTY, PRODUCT SERVICE AND ACCESSORY INFORMATION Please contact your local dealer or distributor. Do not attempt to service any internal parts yourself. This radio should be opened by authorized personnel only. Otherwise, the warranty VOIDS. Your radio is packed and labeled according to the commercial packaging standards. Ver.4.1 http://www.midlandradio.com Syn-Tech III P25 Mobile Radio OPERATION MANUAL 680-090-2041 ii IMPORTANT SAFETY INFORMATION Before installing and using your radio, please read this operation manual. GENERAL PRECAUTIONS Always use only MIDLAND authorized accessories. Unauthorized accessories have the risk of fire hazard, explosion, personal injury or damage to the radio. CAUTION Changes or modifications to your radio may void its compliance with government laws/rules and make it illegal to use. Avoid using the radio at temperatures below -30ºC or above 60ºC. Avoid storing the radio at temperatures below -40ºC or above 85ºC. WARNINGS Your MIDLAND Syn-Tech III P25 Mobile Radio generates electromagnetic RF energy when it is transmitting. To ensure that you and those around you are not exposed to excessive amounts of that energy (beyond recommended allowable limits for occupational use): DO NOT operate your radio without a proper antenna. Otherwise, you can seriously damage your radio. DO NOT touch the antenna when you are transmitting. NEVER connect the transceiver to any AC mains power sources. This may cause an electric shock or fire hazard and will damage your radio. NEVER connect the transceiver to a DC power source either greater than 16 volts or with reverse polarity. Doing so will damage the transceiver. DO NOT attempt to service any internal parts yourself. Please ask your dealer to have necessary service. This radio should be opened by authorized personnel only. Otherwise, the warranty VOIDS. Please read the installation and operating instructions carefully. Ver.4.1 http://www.midlandradio.com Syn-Tech III P25 Mobile Radio OPERATION MANUAL 680-090-2041 i WARNINGS The FCC has adopted a safety standard for human exposure to RF energy. Proper operation of this radio under normal conditions results in user exposure to RF energy below the Occupational Safety and Health Act and Federal Communication Commission limits. Mandatory Safety Instructions to Installers and Users: This radio is NOT approved for use by the general population in an uncontrolled environment. This radio is restricted to occupational use and work related operations only. Radio operators must have the knowledge to control their exposure conditions and the exposure conditions of bystanders and/or passengers to satisfy the lower exposure limit allowed for General Population. To comply with FCC RF exposure limits, DO NOT operate the transmitter of this mobile radio when a person outside the vehicle is within 36 inches (92 centimeters) of the antenna. The antenna supplied by the manufacturer or radio dealer must be mounted at a location such that during radio transmission, no person or persons can come closer than the above indicated minimum safe distance to the antenna, i.e. 36 inches. To comply with current FCC RF exposure limits, the antenna must be installed at or exceeding the minimum safe distance stated above, and in accordance with the requirements of the antenna manufacturer or supplier. Vehicle Installation Instructions: The antenna used for this transmitter must be mounted on the center of the roof ONLY and must be installed in vehicle having the following characteristics in order to prevent bystanders and passengers from being exposed to levels exceeding the limits for General Population/Uncontrolled Exposure environment: 1. All passengers must be sitting under a solid metal roof. 2. For rear deck trunk and roof top installations, the antenna must be located at least 56 cm away from rear-seat passengers and bystanders in order to comply with the FCC RF exposure requirements.. DO NOT operate the radio without the proper antenna installed. Do not substitute any antenna for the one supplied or recommended by the manufacturer or radio dealer. Antennas used for this transmitter must not exceed an antenna gain of 5 dBi with a minimum cable loss of 1dB. By not following the antenna recommendations you may be exposing person(s) to excess radio frequency radiation. You may contact your radio dealer or the manufacturer for further instructions. DO NOT transmit more than 50% of total radio use time (50% duty cycle). Transmitting for more than 50% of the time can cause FCC RF exposure compliance requirements to be exceeded. This radio is transmitting whenever the TX/Busy indicator is red or the  icon is displayed. Pressing the PTT switch on the side of the microphone normally causes the radio to transmit.  The preceding information is provided to make you aware of RF exposure and how to ensure that this radio is operated within FCC RF exposure limits. You, as the qualified end-user of this radio device must control the exposure conditions of bystanders to ensure the minimum separation distance, stated above for satisfying FCC RF exposure compliance, is maintained betwee…

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Cover Letter(s)

5900 Parretta Drive ● KANSAS CITY, MISSOURI ● 64120 TELEPHONE: (816) 241-8500 ● FAX: (816) 241-5713 EMAIL: [email protected] WEBSITE: www.midlandradio.com Midland Radio Corporation 5900 Parretta Drive, Kansas City, MO. 64120 Phone: (816) 241-8500 Fax: (816) 241-5713 Website: wwwl.midlandradio.com E-Mail: [email protected] January 30, 2007 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: (MMA901050) Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Block Diagram Schematic Diagram(s) Operational Description 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. Sincerely, David Berneking Midland Radio Corporation 5900 Parretta Drive Kansas City, MO 64120 .

External Photos

MIDLAND RADIO CORP. FCC ID: MMA901050 EXTERNAL PHOTOS

ID Label/Location Info

FCC ID Label Sample - Portable Model: STP105B FCC ID: MMA90105 IC: 3690A-90105 S/N: 060140100 ---------------------------------------------------------------------------- FCC ID Label Sample - Mobile Model: STM1050B FCC ID: MMA901050 IC: 3690A-901050B S/N: 060140100

Internal Photos

MIDLAND RADIO CORP. FCC ID: MMA901050 INTERNAL PHOTOS

Parts List/Tune Up Info

4720 Mobile Radios FCC Certification Documents 1 6. List of semiconductor designations and functions : GENERIC PART NUMBER FUNCTION MAX4695 ANALOG SWITCH MAX4544 ANALOG SWITCH TDA1519CSP AUDIO AMPLIFIER TDA8541T AUDIO AMPLIFIER AD74111 AUDIO CODEC CMX881E1 BASEBAND PROCESSOR 74AHC1G125 BUS BUFFER/LINE DRIVER MAX4372TEUK-T CURRENT SENSOR AT45DB041B DATA FLASH DS1803E-100 DIGITAL POTENTIOMETER DS1807E DIGITAL POTENTIOMETER TMS320VC5416 DSP DTA144EEA DIGITAL TRANSISTOR DTC144EE DIGITAL TRANSISTOR UMD12N DIGITAL TRANSISTOR UMD3N DIGITAL TRANSISTOR UMH11N DIGITAL TRANSISTOR UMH2N DIGITAL TRANSISTOR TA31136FN FM DEMODULATOR LMX2335UTMX FREQUENCY SYNTHESIZER MAX7301AGL I/O EXPANDER G128064-4F LCD DISPLAY ZMOSG56W LED LVR 9V LINEAR REGULATOR MIC5206-BM5 LINEAR REGULATOR TK11233CMCL LINEAR REGULATOR TK11250CMCL LINEAR REGULATOR M30626FHPGP MICROCONTROLLER LM20 OPERATIONAL AMPLIFIER LMC7111 OPERATIONAL AMPLIFIER LMV321 OPERATIONAL AMPLIFIER LMV358. OPERATIONAL AMPLIFIER SI3457DV P-CHANNEL MOSFET HSMP3824 PIN DIODE MA2S728 PIN DIODE MA4P7102F PIN DIODE PIN 3985-TLG PIN DIODE AH3 RF AMPLIFIER SGA-5486 RF AMPLIFIER TA4004F RF AMPLIFIER RA30H1317M RF POWER AMPLIFIER 2SC5195 RF TRANSISTOR BF512 RF TRANSISTOR BFR93AW RF TRANSISTOR RS232-2X2 RS232 TRANCEIVER RS232-5X3 RS232 TRANCEIVER 1SS383 SCHOTTKY DIODE 1SS388 SCHOTTKY DIODE MMBTA42 SMALL SIGNAL TRANSISTOR BC847BT SMALL SIGNALTRANSISTOR BC857BT SMALL SIGNALTRANSISTOR BCX54-10 SMALL SIGNALTRANSISTOR CY62128V SRAM MEMORY MAX1837 STEP-DOWN DC-DC CONVERTOR MG064L18X500T TRANSIENT VOLTAGE SUPPRESSOR SM15T18A TRANSIENT VOLTAGE SUPPRESSOR MAX836EUS-T VOLTAGE MONITOR BZX84B7V5 ZENER DIODE

Parts List/Tune Up Info

4720 Mobile Radios FCC Certification Documents 2 9. Transmitter tune-up (alignment) procedure : There is no owners/operators applicable transmitter tune-up (alignment) procedure for Aselsan R4721 radio. R4721 radio transmitter conducted carrier output power is programmable between 5 watts and 50 watts at 3 preset levels by using AP25DMY.exe (APCO25 Data Base Manager) and AP25TP47 Programmer. Preset power levels are selectable by owners/operators by means of the power level selector button. Selected power levels are displayed on the upper line of LCD screen as “L” indicating low power level, “M” indicating medium power level and “H” indicating high power level. Default values for the power levels are as follows: L (low power level) = 10 watt M (medium power level) = 20 watts H (high power level) = 40 watts In Aselsan, power control circuits of R4721 radio is calibrated according to 4700 Adjustment and Test Procedures given below. NOTE: A4700.exe Adjustment and Test software is intended to be used by Aselsan/Authorized parties only. 4720 Mobile Radios FCC Certification Documents 3 5 ADJUSTMENTS 4720 Mobile (5820-4720-0000S) ANTENNA (Mic-Audio) MIC-8 /(TX-Audio-In) OPT-3 (GND) MIC-1 (RS232-RX) MIC-2 (RS232-TX) MIC-3 (BATT-13V6) BATT-4, 5 (GND) BATT-2, 3 DC Power Supply A4700 4720 Mobile Radios Adjustment Set-up Audio Analyzer HP 8903B Frequency Counter HP 53132A Modulation Analyzer HP 8901B 10dB 10dB 1W 10dB 1W RF Power Mete r 20dB 100W RF Signal Generator HP 8657B Test Pattern Generator TDU4700 680Ω 100 μF + Mic 600 Ω Matching 10dB 1W APCO 25 Test Set IFR 2975 10dB 1W 4720 Mobile Radios FCC Certification Documents 4 a) Connect the equipment as illustrated. b) Set the Power Supply output to 13.6 volts and current limit to 10 amperes. c) Set the RF Signal Generator output to its minimum level. d) Set the Audio Analyzer output impedance to 600 Ω and amplitude to 0 Vrms. e) Set the Modulation Analyzer to measure peak deviation. Set the audio bandwith for ≤ 5 Hz to ≥ 15 kHz. Turn the de-emphasis function off. f) Run A4700.exe on the PC. g) Click on the Read Radio icon and enter the “Radio Adj.” menu. 5.1 RF Output Power Adjustment a) Enter “RF Output Power Adjustment” window and click “Transmit”. b) Adjust RF Output Power Parameter to obtain the measured power levels to be equal to the selected power levels for each selected frequency.

Parts List/Tune Up Info

4720 Mobile Radios Methods of Adjustments 1 5 METHODS OF ADJUSTMENTS 4720 Mobile (5820-4720-0000S) ANTENNA (Mic-Audio) MIC-8 /(TX-Audio-In) OPT-3 (GND) MIC-1 (RS232-RX) MIC-2 (RS232-TX) MIC-3 (BATT-13V6) BATT-4, 5 (GND) BATT-2, 3 DC Power Supply A4700 4720 Mobile Radios Adjustment Set-up Audio Analyzer Frequency Counter Modulation Analyzer 10dB 10dB 1W 10dB 1W RF Power Mete r 20dB 100W RF Signal Generator Test Pattern Generator 680Ω 100μF + Mic 600 Ω Matching 10dB 1W APCO 25 Test Set 10dB 1W 4720 Mobile Radios Methods of Adjustments 2 a) Connect the equipment as illustrated. b) Set the Power Supply output voltage to 13.6 volts and current limit to 10 amperes. c) Set the RF Signal Generator output to its minimum level. d) Set the Audio Analyzer output impedance to 600 Ω and amplitude to 0 Vrms. e) Set the Modulation Analyzer to measure peak deviation. Set the audio bandwith for ≤ 5 Hz to ≥ 15 kHz. Turn the de-emphasis function off. f) Run A4700.exe on the PC. g) Click on the Read Radio icon and enter the “Radio Adj.” menu. h) Adjustments specified in steps 5.1–5.12 should be applied consecutively. i) Adjustments specified in steps 5.1–5.12 should be applied to all models unless otherwise specified. j) If “Analog Frequency Adjustment” is changed, then “C4FM Receive Level Adjustment” has to be repeated. k) If “Modulation Flatness Adjustment” or “Modulation Limiting Adjustment” is changed, then the successive modulation and deviation adjustments have to be repeated. l) RF signal modulated with Standart Transmitter Low Deviation Pattern in step 5.12 can be obtained from IFR 2975 Apco Test Set or an RF Signal Generator connected to TDU 4700 Test Pattern Generator, which is calibrated according to the method specified in step m). m) Connect TDU 4700 output to RF Signal Generator EXT DC FM input. Connect RF Signal Generator output to Modulation Analyzer RF input. Run TDU4700.exe on the PC and select Standart Symbol Rate Pattern on TDU4700 window. Set RF Signal Generator output level to 10 dBm. Adjust RF Signal Generator modulation level to obtain 2800±30 Hz deviation on Modulation Analyzer. NOTE: The alternative test equipments, which can be used in the adjustment set-up, should be compatible to those specified in EIA-603-B and/or TIA-102.CAAA-B standards. 4720 Mobile Radios Methods of Adjustments 3 5.1 RF Output Power Adjustment a) Enter “RF Output Power Adjustment” window and click “Transmit”. b) Adjust RF Output Power Parameter to obtain the measured power levels to be equal to the selected power levels for each selected frequency. 5.2 Analog Frequency Adjustment 25 kHz a) Enter “Analog Frequency Adjustment 25 kHz” window and click “Transmit”. b) Adjust Analog Frequency Parameter 25 kHz until the frequency error to be less than 10 Hz at the test frequency. 5.3 Analog Frequency Adjustment 12.5 kHz a) Enter “Analog Frequency Adjustment 12.5 kHz” window and click “Transmit”. b) Adjust Analog Frequency 12.5 kHz parameter until frequency error to be less than 10 Hz at the test frequency. 5.4 Digital Frequency Adjustment Applicable only to digital models. a) Enter “Digital Frequency Adjustment” window and click “Transmit”. b) Adjust Digital Frequency parameter until frequency error to be less than 10 Hz at the test frequency. 5.5 Modulation Flatness Adjustment a) Enter “Modulation Flatness Adjustment” window, select the lower test frequency and click “Transmit”. b) Set the audio signal frequency to 50 Hz and adjust the audio signal level to obtain 3000 Hz deviation on Modulation Analyzer. The audio signal level should be 100±20 mVrms at the OPT-3 (TX-Audio-In) input of the radio. c) Set the audio signal frequency to 50 Hz, click “MOD-2” and set the measured audio signal level on Audio Analyzer as 0.0 dB reference. d) Set the audio signal frequency to 3000 Hz, click “MOD-1” and adjust MOD-1 parameter to obtain 0.0±0.05 dB audio signal level on Audio Analyzer. e) Repeat the steps c) and d). f) Select the medium test frequency. 4720 Mobile Radios Methods of Adjustments 4 g) Set the audio signal frequency to 50 Hz, click “MOD-2” and adjust MOD-2 parameter to obtain 0.0±0.05 dB audio signal level on Audio Analyzer. h) Set the audio signal frequency to 3000 Hz, click “MOD-1” and adjust MOD-1 parameter to obtain 0.0±0.05 dB audio signal level on Audio Analyzer. i) Repeat the steps g) and h). j) Select the higher test frequency and repeat the steps g) and h). k) Repeat the step j). 5.6 Modulation Limiting Adjustment a) Enter “Modulation Limiting Adjustment” window and click “Transmit”. b) Set the audio signal frequency to 1 kHz and level to 2 times of the level in step 5.5-b). c) Adjust Modulation Limit parameter until deviation to be 4600±50 Hz. 5.7 FM Deviation Adjustment a) Enter “FM Deviation Adjustment” window and click “Transmit”. b) Set the audio signal frequency to 1 kHz and level to 1 Vrms at MIC-8 input. c) Adjust FM Deviation parameter until deviation to be 4500±50 Hz. d) Set the audio signal amplitude to 0 mVrms. 5.8 C4FM Deviation Adjustment Applicable only to APCO25 models. a) Enter “C4FM Deviation Adjustment” window and click “Transmit”. c) Adjust C4FM Deviation parameter until deviation to be 2800±30 Hz. 5.9 GMSKFM Deviation Adjustment Applicable only to SK2/SAGE models. a) Enter “GMSKFM Deviation Adjustment” window and click “Transmit”. c) Adjust GMSKFM Deviation parameter until deviation to be 3800±40 Hz. 4720 Mobile Radios Methods of Adjustments 5 5.10 Squelch Adjustment a) Enter “Squelch Adjustment” window. b) Set the RF signal frequency to the test frequency, modulation frequency to 1 kHz, deviation to 3 kHz and adjust the RF signal level for 10 dB SINAD. This RF level referred at the antenna input should be less than –119 dBm. c) Adjust the Squelch parameter from RX LED is off condition to the position where RX LED is just on or click “AUTOMATIC” for the automatic squelch adjustment. d) Adjust the RF signal level in 0.2 dB increments from RX LED is on condition to the position where R…

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RF Exposure Info

1/26/2007 Page 1 of 3 FCCID: MMA901050B FCC RF Exposure Requirements General information : FCCID: MMA901050B Device category: Mobile per Part 2.1091 Environment: Controlled Exposure Mobile devices that operate under Part 90 of this chapter are subject to routine environmental evaluation for RF exposure prior to equipment authorization or use if they operate at frequencies of 1.5 GHz or below and their effective radiated power (ERP) is 1.5 watts or more. However, compliance with the power density limits of 1.1310 is not required. Antenna: The manufacturer does not specify an antenna. A typical vehicle antenna has a gain of 3 dBi was used with this device. This device has provisions for operation in a vehicle, or a fixed location. Configuration Antenna p/n Type Max. Gain (dBi) Passenger car Any omni 3 Operating configuration and exposure conditions: The conducted output power is 50 Watts. Typical use qualifies for a maximum duty cycle factor of 50%. The manufacturer also markets this device only for occupation use. - Part 2.1091 states that devices are excluded from routine evaluation if the EIRP is less than 2.46Watt (or 1.5WERP). - Vehicle Operation: A typical vehicle installation consists of an antenna system with a coaxial cable of the type RG 58 which has a loss of 1dB for a length of 15 feet. MPE Calculation: The minimum separation distance is calculated as follows: The limit for occupation/controlled exposure environment below 300 MHz is 1 mW/cm 2 . 1/26/2007 Page 2 of 3 FCCID: MMA901050B Channel frequency: 150-174 MHz The conducted power output is 50 watt. The coax loss was taken as 1 dB. Antenna gain was taken as 3 dBi 50% talk time in 6 minutes antenna gain in dBd S f 300 := power density limit for controlled exposure G1dBd2.15+:= gain in dBi G13= S1= CL1:= dB coax loss GG1CL−:= gain numeric Gn10 G 10 := Gn1.585= R Po Gn⋅() 4π⋅S⋅ () := inches R 2.54 := R56.152= distance in centimeters required for compliance inches22.107= W50:= power in Watts D1:= Duty Factor in decimal % (1=100%) 1 for FM E3:= exposure time in minutes U6:= (use 6 for controlled and 30 for uncontrolled ) WexpW D⋅ E U ⎛ ⎜ ⎝ ⎞ ⎠ ⋅:= PC E U ⎛ ⎜ ⎝ ⎞ ⎠ 100⋅:= Wexp25=WattsPC50= % on time Po25000:=mWatts f300:= Frequency in MHz dBd0.85:= 1/26/2007 Page 3 of 3 FCCID: MMA901050B Conclusion: The device complies with the MPE requirements by providing a safe separation distance of 56 cm between the antenna, including any radiating structure, and any persons when normally operated . Proposed RF exposure safety information to include in User’s Manual : “FCC RF Exposure Requirements: CAUTION: The antenna(s) used for this transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This device is approved with emissions having a source-based time- averaging duty factor not exceeding 50%. Vehicle – Antenna Installation: - Antennas used for this transmitter must not exceed an antenna gain of 5 dBi with a minimum cable loss of 1dB. - For rear deck trunk and roof top installations, the antenna must be located at least 56 cm away from rear-seat passengers and bystanders in order to comply with the FCC RF exposure requirements. The following label will be mounted in conspicuous view on the radio. Failure to observe these restrictions will result in exceeding the FCC RF exposure limits.

Test Report

FCC PART 90 TEST REPORT APPLICANT MIDLAND RADIO CORPORATION 5900 PARRETTA DRIVE KANSAS CITY, MO 64116 FCC ID MMA901050 MODEL NUMBER STM1050B PRODUCT DESCRIPTION MOBILE TRANSCEIVER DATE SAMPLE RECEIVED 11/1/2006 DATE TESTED 11/14/2006 TESTED BY Nam Nguyen APPROVED BY Mario de Aranzeta TIMCO REPORT NO. M\MidlandRadio_MMA\3036AUT6\3036AUT6TestReport.doc TOTAL PAGES 24 TEST RESULTS PASS FAIL THE ATTACHED REPORT SHALL NOT BE REPRODUCED EXCEPT IN FULL WITHOUT THE WRITTEN APPROVAL OF TIMCO ENGINEERING, INC. 849 NW STATE ROAD 45 NEWBERRY, FL 32669 USA PH: 888.472.2424 OR 352.472.5500 FAX: 352.472.2030 EMAIL: [email protected] HTTP: //WWW.TIMCOENGR.COM Certificate # 0955-01 Applicant: MIDLAND RADIO CORPORATION FCC ID: MMA901050 Report: M\MidlandRadio_MMA\3036AUT6\3036AUT6TestReport.doc Page 2 of 24 STATEMENT OF COMPLIANCE This equipment has been tested in accordance with the standards identified in the referenced test report. To the best of my knowledge and belief, these tests were performed using the measurement procedures described in this report and demonstrate that the equipment complies with the appropriate standards. No modifications were made to the equipment during testing in order to demonstrate compliance with these standards. I attest that the necessary measurements were made by me or under my supervision, at Timco Engineering, Inc. located at 849 N.W. State Road 45, Newberry, Florida 32669 USA. Certificate #0955-01 Authorized by: Mario de Aranzeta Signature: <Mario de Aranzeta> Function: Engineer Date: January 15, 2007 Tested by: Nam Nguyen Applicant: MIDLAND RADIO CORPORATION FCC ID: MMA901050 Report: M\MidlandRadio_MMA\3036AUT6\3036AUT6TestReport.doc Page 3 of 24 GENERAL INFORMATION DUT Specification The test results relate only to the items tested. DUT Description MOBILE TRANSCEIVER FCC ID MMA901050 Model Number STM1050B Operating Frequency 136-174 MHz No. of Channels Tested 3 Type of Emission F3E, F2D, F1E, F1D Modulation FM 110–120Vac/50– 60Hz DC Power DUT Power Source Battery Operated Exclusively Prototype Pre-Production Test Item Production Fixed Mobile Type of Equipment Portable Test Condition The DUT was tested in the laboratory with normal temperature and humidity. The temperature was 26ºC with a relative humidity of 50%. Modification to the DUT None Test Exercise The DUT was placed in continuous transmit Applicable Standards TIA 603 FCC CFR 47 Part 90 Test Facility Timco Engineering, Inc. at 849 NW State Road 45 Newberry, FL 32669 USA Applicant: MIDLAND RADIO CORPORATION FCC ID: MMA901050 Report: M\MidlandRadio_MMA\3036AUT6\3036AUT6TestReport.doc Page 4 of 24 TEST PROCEDURES Power Line Conducted Interference: If required for DUT, the procedure used was ANSI/TIA 603-C:2004 using a 50uH LISN. Both lines were observed with the DUT transmitting. The bandwidth of the spectrum analyzer was 10 kHz with an appropriate sweep speed. Bandwidth 20 dB: The measurements were made with the spectrum analyzer's resolution bandwidth (RBW) = 1 MHz and the video bandwidth (VBW) = 3 MHz and the span set as shown on plot. Power Output: The RF power output was measured at the antenna feed point using a peak power meter. Antenna Conducted Emissions: The RBW = 100 kHz, VBW = 300 kHz and the span set to 10.0 MHz and the spectrum was scanned from 30 MHz to the 10 th Harmonic of the fundamental. Above 1 GHz the resolution bandwidth was 1 MHz and the VBW = 3 MHz and the span to 50 MHz. Radiation Interference: The test procedure used was ANSI/TIA 603-C:2004 using an Agilent spectrum receiver with pre-selector. The bandwidth (RBW) of the spectrum receiver was 100 kHz up to 1 GHz and 1 MHz above 1 GHz with an appropriate sweep speed. The VBW above 1 GHz was 3 MHz. The analyzer was calibrated in dB above a microvolt at the output of the antenna. Applicant: MIDLAND RADIO CORPORATION FCC ID: MMA901050 Report: M\MidlandRadio_MMA\3036AUT6\3036AUT6TestReport.doc Page 5 of 24 RF POWER OUTPUT Rule Part No.: Part 2.1046(a), Test Requirements: Method of Measurement: RF power is measured by connecting a 50-ohm, resistive wattmeter to the RF output connector. With a nominal battery voltage, and the transmitter properly adjusted the RF output measures: Test Setup Diagram: Test Data: OUTPUT POWER: HIGH – 50.00 Watts MID - 32.00 Watts LOW - 2.50 Watts Part 2.1033 (C)(8) DC Input into the final amplifier FOR LOW POWER SETTING INPUT POWER: (13.8V)(2.18A) = 30.08 Watts FOR HIGH POWER SETTING INPUT POWER: (13.8V)(7.0A) = 96.60 Watts Transmitter under Test Power Meter Audio Oscillator Applicant: MIDLAND RADIO CORPORATION FCC ID: MMA901050 Report: M\MidlandRadio_MMA\3036AUT6\3036AUT6TestReport.doc Page 6 of 24 MODULATION CHARACTERISTICS Part 2.1033(c) Part 2.1033(c) (4) Type of Emission: 11K2F2D, 11K2F1D Part 90.209 Part 90.207 Bn = 2M + 2DK M = B/2 = 9600/2= 4800 D = 800 K=1 Bn = 2(4800)+2(800) = 11.2k Part 2.1033(c) (4) Type of Emission: 11K0F3E Part 90.209 Part 90.207 Bn = 2M + 2DK M = 3000 D = 2400 K=1 Bn = 2(3000)+2(2400) = 10.8k Part 2.1033(c) (4) Type of Emission: 16K0F3E Part 90.209 Part 90.207 Bn = 2M + 2DK M = 3000 D = 4600 K=1 Bn = 2(3000)+2(4600) = 15.2k Applicant: MIDLAND RADIO CORPORATION FCC ID: MMA901050 Report: M\MidlandRadio_MMA\3036AUT6\3036AUT6TestReport.doc Page 7 of 24 MODULATION CHARACTERISTICS Rule Part No.: Part 2.1047(a)(b) Test Requirements: Method of Measurement: Audio frequency response The audio frequency response was measured in accordance with TIA/EIA Specification 603 with no exception. A curve or equivalent data showing the frequency response of the audio modulating circuit over a range of 100 – 5000Hz shall be submitted. The audio frequency response curve is shown below. Audio Frequency Response Plot Color Line Style ThickDataAxis Blue Solid 2Anlr.Level A!NormalizeLeft -4 +4 -2 +0 +2 d B 100 3k 200 300 400 500 700 1k 2k Hz Applicant: MIDLAND RADIO CORPORATION FCC ID: MMA901050 Report: M\MidlandRadio_MMA\3036AUT6\3036AUT6TestReport.doc Page 8 of 24 VOICE MODULATED COMMUNICATION EQUIPMENT Par…

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Contact Information

Applicant

Butch Rittmann(Director of Operations)
[email protected]816 241-8500Fax: 816 241-5713

Test Firm

Timco Engineering, Inc.Sid Sanders
[email protected]352-472-5500Fax: 352-472-2030

Technical Specifications

#Rule PartsFrequency RangePower OutputEmissionTolerance
89150 MHz - 174 MHz2.5 W16K0F3E1.5 ppm
Confidentiality
Long Term
Grant Notes
Power listed is conducted. This device must be restricted to work related operations in an Occupational/Controlled RF exposure Environment, not exceeding a maximum transmitting duty factor of 50%. All qualified end-users of this device must have the knowledge to control their exposure conditions and/or duration, and the exposure conditions and/or duration of their passengers and bystanders, to comply with the General Population/Controlled MPE limit and requirements. A label, as described in this filing, must be displayed on the device to direct users to specific training information for meeting Occupational Exposure Requirements. Users must be provided with the training information, antenna installation and transmitter operating conditions for satisfying RF exposure compliance. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 56 cm from all persons and must not exceed an antenna gain of 3 dBi. This device contains functions that are not operational in U.S Territories except as noted in the filing. This filing is only applicable for US operations.

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Oct 29, 2023

Equipment Class

TNF - Licensed Non-Broadcast Transmitter Held to Face