MMA944100BUHF BASE TECH IV TRANSCEIVER

Operator’s Manual Base Tech IV Series 94-3110B 110 Watt VHF P25 Base/Repeater Station 94-4100B 100 Watt UHF P25 Base/Repeater Station Perspective picture here www.midlandradio.com Base Tech IV P25 Base/Repeater Station WARNING: The antenna(s) used for this transmitter must be fixed-mounted on outdoor permanent structures with a separation distance of at least 6 meters from all persons during normal operation. The peak conducted output power at each antenna terminal must not exceed 250 Watts and the peak radiated output power must not exceed 1000 Watts EIPR. Users and installers must ensure that FCC requirements for satisfying RF exposure compliance are met. (See FCC Rules Part 1, Sections 1307 and 1310) NOTICE: The AMBE+2 ™ voice coding Technology embodied in this product is protected by intellectual property rights including patent rights, copyrights and trade secrets of Digital Voice Systems, Inc. This voice coding Technology is licensed solely for use within this Communications Equipment. The user of this Technology is explicitly prohibited from attempting to extract, remove, decompile, reverse engineer or disassemble the Object Code, or in any other way convert the Object Code into a human readable form. U.S. Patents Nos. #5,870,405, #5,826,222, #5,754,974 #5,701,390, #5,715,365, #5,649,050, #5,630,011, #5,581,656, #5,517,511, #5,491,772, #5,247,579, #5,226,084 and #5,195,166. 2 © 2013, Midland Radio Corporation http://www.midlandradio.com Base Tech IV P25 Base/Repeater Station Contents Contents..................................................................................3 Conventions and Symbols in this Book...................................4 Disclaimer................................................................................4 Introduction..............................................................................4 Models..................................................................................4 Radio Features.....................................................................5 Recommended Accessories................................................6 Radio Controls.........................................................................6 Front Panel...........................................................................6 Rear Panel...........................................................................7 Backlit LCD Details...............................................................7 Setup........................................................................................8 Unpacking............................................................................8 Installation............................................................................8 Basic Operation.......................................................................9 Turning the Radio On and Off..............................................9 Channel Selection................................................................9 Receiving Transmissions from Other Radios.......................9 Transmitting to Other Radios.............................................11 Programmable Functions.......................................................13 Message Display Quick Reference........................................15 Error Codes........................................................................15 Specifications.........................................................................16 Warranty Statement...............................................................17 © 2013, Midland Radio Corporation http://www.midlandradio.com 3 Base Tech IV P25 Base/Repeater Station Conventions and Symbols in this Book  This symbol marks a “caution”. Cautions are special notices which you should read and follow carefully to avoid possible damage to your equipment and to avoid potential danger to yourself or other people. ! This symbol marks an “important point”. Important points are specific instructions which should be followed closely for proper operation.  This symbol marks a “note”. Notes are hints or tips which offer additional information to help you. Disclaimer Midland Radio Corporation is committed to continuous quality improvements, for this reason specifications may change without prior notice. Every effort has been made to ensure that the information in this document is complete, accurate, and up-to-date. Midland assumes no responsibility for the results of errors beyond its control. The manufacturer of this equipment also cannot guarantee that changes in the equipment made by unauthorized people will not affect the transceiver’s performance or functions. Introduction Thank you for choosing the Midland Base Tech IV P25 Base/Repeater Station to meet your communication needs. 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 before operating the radio. Models There are two models in the Base Tech IV series. 94-3110B – 5 – 110 Watts VHF, 146-174 MHz. 94-4100B – 2 – 100 Watts UHF, 440-475 MHz. 4 © 2013, Midland Radio Corporation http://www.midlandradio.com Base Tech IV P25 Base/Repeater Station Radio Features The Base Tech IV series base/repeater stations are programmable, synthesized transceivers featuring: 5 P25 operation 5 Transmit power continuously variable up to 100 Watts, UHF; 110 Watts, VHF. 5 12.5 KHz channel spacing. 5 4 programmable buttons. The function of each button is assigned by dealer programming. 5 6 LED indicators for power-on, busy, transmit, alarm, digital and repeat. 5 Multi-function rotary encoder knob for volume, channel, squelch, and backlight level. 5 50 CTCSS tones and 83 CDCSS codes are programmable per channel. In addition, a custom CTCSS tone frequencies and a custom CDCSS are programmable. 5 A busy channel lockout feature is programmable. An override function is available to allow transmission during repeater hangtime. 5 A transmit time-out timer may be program…

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APPLICANT: MIDLAND RADIO CORP. FCC ID: MMA944100B EXTERNAL PHOTOS

FCC LABEL ARTWORK Midland model 94-4100B Dimensions: 1.44” wide 1.0” high Location: Lower left side of Rear panel (see rear view photo) Model: 94-4100B Serial # 7402702 FCC ID: MMA944100B IC: 3690A-944100B MADE IN JAPAN

APPLICANT: MIDLAND RADIO CORP. FCC ID: MMA944100B INTERNAL PHOTOS ANALOG LOGIC UNIT – TOP VIEW ANALOG LOGIC UNIT – BOTTOM VIEW DSP UNIT TOP VIEW DSP UNIT BOTTOM VIEW EXT CONNECTOR – TOP VIEW EXT CONNECTOR – BOTTOM VIEW FRONT PANEL UNIT – TOP VIEW FRONT PANEL UNIT – BOTTOM VIEW PA UNIT – TOP VIEW PA UNIT – BOTTOM VIEW RX – IF – TOP VIEW RX – IF – BOTTOM VIEW RX UNIT – TOP VIEW RX UNIT – BOTTOM VIEW RX – VCO – TOP VIEW RX – VCO – BOTTOM VIEW TX UNIT – TOP VIEW TX UNIT – BOTTOM VIEW TX VCO – TOP VIEW TX VCO – BOTTOM VIEW

7.0 ALIGNMENT PROCEDURES 7.1 RECEIVER PART 1) Pre-selector and Post selector Both selector has pre-tuned at the factory, so no alignment is required. 2) FVR001 Alignment This is to adjust Squelch tight level. 3) VCO Alignment The VCO has already aligned at the factory to cover full sub-band. However, if you need to re-adjust VCO when you repair, set the VCO voltage at 10.5v by L303 at the high end of the sub band. 7.2 TRASNMITTER PART 1) FVR201 Alignment This potentiometer determines modulation level. Carefully align this potentiometer to obtain flat deviation from the lowest to the highest frequency installed in the transmitter. 2) FVR202 Alignment This potentiometer determines low frequency (below 300Hz) deviation. When POCSAG, CTCSS and DCS are used, necessary to align to have enough deviations at low frequency. 3) FVR203 Alignment This is to determine the carrier frequency tolerance. 4) FVR204 Alignment] This is to adjust transmitter output power. 5) VCO alignment The VCO has already been aligned at the factory, however, if you need to re-adjust, set the VCO voltage at 10.5v at the highest sub band frequency. 7.3 POWER AMPLIFIER PART 1) FVR501 Alignment This potentiometer to be adjusted at the minimum reverse power detecting point when the antenna is terminated with 50 ohm load. 2) FVR502 Alignment This potentiometer o be set at the point where reverse power is detected. 3) FVR503 Alignment This potentiometer to be set at the point where low-power-alarm is detected. 4) FVR504 Alignment This potentiometer to be set at the maximum power from the final power amplifier, however, do not set exceeding 120w. 7.4 FRONT PANEL PART 1) VR1 Alignment This is to set the Hi-Power-Level of the transmitter output power. 2) VR2 Alignment This is to set the Lo-Power-Level of the transmitter output power. 3) VR3 Alignment This is to set volume level and squelch level by pulse code switch. 7.5 DIGITAL LOGIC PART The digital logic part has no point to adjust nor tune. 7.6 DESCRIPTION OF CIRCUITS TO STABILIZE OUTPUT FREQUENCY The transmitter uses a TCVXO (Temperature and Voltage Controlled Crystal Oscillator) to generate 12.00MHz reference frequency for the transmitter PLL and VCO circuit. The accuracy of the TCVXO is less than +/- 0.00015% over the range of –30 degree C and +60 degree C. 7.7 DESCRIPTION OF CIRCUIT TO SUPPRESS SPURIOUS EMMISSIONS AND LIMIT MODULATIONS A multiple pole Low Pass Filter is used after the final power amplifier stage. It is designed to sharply attenuate spurious and harmonics frequencies above the highest frequency in the sub-band of the radio. Modulation limiting is performed by Tx audio processor CMX7041 located in the analog logic part. Internal limiting/compression amplifier provides excellent limiting with minimum distortion. In addition to modulation limiting, this device contains all circuitry to perform Pre-emphasis, band pass shaping and CTCSS encoder.

5.0 LIST OF SEMICONDUCTORS DESIGNATIONS AND FUNCTIONS 5.1 Tx VCO UNIT Q301 2SK508 Oscillator Q302 2SC4325 Amplifier Q303 2SC3583 VCO output amplifier Q304 DTA124EUA Switch Q305 2SC2351 B + filter Q306 DTA114EUA B + switch IC301 uPC1688 Amplifier 5.2 Tx MAIN UNIT (YOUNGER) Q201 2SK3018 PTT buffer Q202 UMG1N Switch Q204 UMC2 Switch Q207 2SD2351 B + filter Q205 2SK3018 Charge pump Q208 RTU002P02 Charge pump Q209 2SK3018 Charge pump Q210 UMC2N Switch Q212 UMG1N Switch Q213 DTC124EUA Switch Q206 DTA124EUA Switch Q211 2SC3357 RF amplifier IC201 BAJ0BCOFP 10v regulator IC202 XC6202P702P 7v regulator IC204 TC75W51F Mod LF amplifier IC205 TA75S01F Mod. Amplifier IC208 MB1511 PLL IC210 NJU7662M DC/DC converter IC209 TC4566F LPF, switch IC211 BA00CC0WFP Tx power adjust IC212-B NJM2904 Power control IC212-A NJM2904 Error amplifier IC203 XC6202P502M 5v regulator IC213 TA75S01F Mod. LF amplifier IC206 TC7TW125FU Level converter IC207 TC7TW125FU Level converter 5.3 TX POWER AMPLIFIER Q501 2SK3018 Switch Q502 DTB143EK B + switch IC501-B BAM4558F Reverse power control IC501-A BAM4558F Error amplifier IC502 TA75S01F Power control IC504 AN78L05M 5v regulator IC503 TA75S01F Power signal amplifier PM510 RA13H4452M Driver amplifier Q504 RD60HUF1 Power amplifier Q505 RD60HUF1 Power amplifier 5.4 RX VCO UNIT Q301 2SK508 Oscillator Q302 2SC4325 Amplifier Q303 2SC3583 VCO output amplifier Q304 DTA124EUK Switch Q305 2SC2351 B + filter Q306 DTA114EUA B + switch IC301 uPC1688 Amplifier 5.5 RX MAIN UNIT Q861 3SK177 RF amplifier Q810 2SK508 1 st High IF amplifier Q809 2SD2351 B + filter Q806 RTU002P02 Charge pump Q805 2SK3018 Charge pump Q807 2SK3018 Charge pump Q808 UMC2N Switch Q804 UMC2N Switch Q811 DTA144EUA Switch Q803 33061MCH Rx switch Q802 2SD2351 Rx switch Q801 2SK3018 Rx switch IC806 MB1511 PLL IC807 NJU7662M DC/DC inverter IC808 TC4566F LPF switch IC805 XC6202P502M 5v regulator IC809 TA75S01F VCO error amplifier IC811 SPM5001 1 st mixer IC802 XC221A200 AF LPF IC801 BA70BCOFP 7v regulator IC803 TCWT125FU Level converter IC804 TCWT125FU Level converter IC810 XC221A1200 DC amplifier IC812 XC6201P502M 5v regulator 5.6 IF UNIT Q001 2SC4250 2 nd High IF Q002 2SK880 Wide/Narrow switch Q003 DTC323TU Wide/Narrow switch Q004 2SK880 Wide/Narrow switch Q005 2SK3018 Wide/Narrow switch Q006 2SD2351 Noise amplifier Q007 XP01501 Squelch switch IC001 BA4116FV Low IF/oscillator/detector IC002 M02551GP AF amplifier 5.7 ANALOG LOGIC UNIT Q1 RTU002P02 Power switch Q2 2SK3018 Switch Q3 2SK3018 Switch Q4 2SK3018 Switch Q5 IMX1 ALC U1 MCF52233 CPU U2 25AA256 EEPROM U3 CMX7041 RX audio processor U4 CMX7041 TX audio processor U5 MCP1316 Supervisor U6 BD9778HFP Switching regulator U7 MCP1825S-33 Regulator U8 LM397 Low voltage detect U9 LVC1G02 Logic U10 LVC1G08 Logic U11 LVC1G08 Logic U12 LVC1G08 Logic U13 LVC1G3157 Analog switch U14 LVC1G3157 Analog switch U15 CAT5113 Volume digital potentiometer U16 LMV358 RX op amp U17 LMV358 RX op amp U18 LVC1G3157 Analog switch U19 LMV358 RX op amp U20 LVC1G66 Analog switch U21 LMV358 DAC op amp U22 LMV358 TX op amp U23 CAT5113 Beep digital potentiometer U24 LMV358 TX op amp U25 LMV358 TX op amp U26 CAT5114 Digital TX mod potentiometer U27 LVC1G3157 Analog switch U28 CAT5114 TX mod balance potentiometer U29 CAT5114 Analog TX mod potentiometer U30 LVC1G3157 Analog switch U31 MAX7412 TX LPF 5.8 DIGITAL LOGIC UNIT IC1 TMS320VC5509A DSP IC2 CY62137EV30LL SRAM IC3 A29L160AUG FLASH IC4 LMV358 LPF IC5 TLV320AIC23 CODEC IC6 LMV358 LPF IC7 LMV321 LPF IC8 TC7SH04F Inverter IC9 FT2232HL UART IC10 TL16C550C UART IC11 AT93C46DN EEPROM IC12 TC7SH04F Inverter IC13 TPS3823-33DBVR Reset IC14 TC7SH08F Logic IC15 TPS77316DGK Regulator 5.9 FRONT CONTROL UNIT Q1 DTA124E Switch Q2 DTC144E Switch Q3 DTA124E Switch Q4 DTC144E Switch Q5 DTC114T Switch Q6 2SCR542P Backlight control Q7 2SA1576A Backlight control Q8 2SK3018 Switch Q9 2SK3018 Switch Q10 2SK3018 Switch Q11 FMG9A LED Switch Q12 FMG9A LED Switch Q13 FMG9A LED Switch U1 PQ12RD21 Regulator U2 MCP1754ST-50 Regulator U3 TDA1519C Audio Amp U4 LM321 LCD contrast U5 74LVC4245A Level converter U6 LM321 LCD backlight U7 FT230X UART U8 LMP7701 Mic amp U9 LMP7701 Headset amp

Page 1 of 3 RF Exposure Requirements General information: Device category: Fixed as described in Part 2.1091 Environment: Uncontrolled Exposure Fixed devices that operate under Part 90 of this chapter are subject to routine environmental evaluation for RF exposure prior to equipment authorization. Antenna: The manufacturer does not specify an antenna, but a typical fixed mounted antenna has a gain of 3 dBi. This device has provisions for operation as fixed mounted, on permanent structure locations. Configuration Antenna p/n Type Max. Gain (dBi) Fixed mounted Any omni 3 Operating configuration and exposure conditions: The conducted output power is 100 Watts rated. Typical use qualifies for a maximum duty cycle factor of 60%. 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). - Fixed operation: A typical installation consists of an antenna system with a coaxial cable of the type ½ inch hard line which has a loss of 1dB for a length of 40 feet at UHF frequencies. MPE Calculation: The minimum separation distance is calculated as follows: The limit for general population/uncontrolled exposure environment above 300 MHz is f/1500 or 0.3 mW/cm 2 . Page 2 of 3 Frequency: 450-470 MHz The conducted power output is 100 Watt. The coax loss was taken as 1 dB. Antenna gain was taken as 3 dBi 60% talk time in 30 minutes Page 3 of 3 Proposed RF exposure safety information to include in User’s Manual: “FCC RF Exposure Requirements: See user’s manual.

FCC PART 90 AND IC RSS-119, RSS-GEN TEST REPORT APPLICANT MIDLAND RADIO CORPORATION 5900 PARRETTA DRIVE KANSAS CITY MISSOURI 64120 USA FCC ID MMA944100B IC CERTIFICATION 3690A-944100B MODEL NUMBER 94-4100B PRODUCT DESCRIPTION UHF BASE TECH IV TRANSCEIVER DATE SAMPLE RECEIVED 11/1/2012 DATE TESTED 11/5/2012 TESTED BY Nam Nguyen APPROVED BY Mario de Aranzeta TIMCO REPORT NO. 2861AUT12TestReport.doc TEST RESULTS PASS FAIL THE ATTACHED REPORT SHALL NOT BE REPRODUCED EXCEPT IN FULL WITHOUT THE WRITTEN APPROVAL OF TIMCO ENGINEERING, INC. TABLE OF CONTENTS 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: MMA944100B IC CERT #: 3690A-944100B Report: M\MidlandRadio MMA\2861AUT12\2861AUT12TestReport.doc Page 2 of 31 TABLE OF CONTENTS GENERAL REMARKS ........................................................................................................... 3 GENERAL INFORMATION .................................................................................................... 4 TEST PROCEDURES ............................................................................................................ 5 RF POWER OUTPUT ............................................................................................................ 6 MODULATION CHARACTERISTICS ...................................................................................... 7 AUDIO FREQUENCY RESPONSE ......................................................................................... 8 AUDIO LOW PASS FILTER ................................................................................................... 9 AUDIO INPUT VERSUS MODULATION ............................................................................... 10 OCCUPIED BANDWIDTH ................................................................................................... 11 SPURIOUS EMISSIONS AT ANTENNA TERMINALS (CONDUCTED) .................................... 21 FIELD STRENGTH OF SPURIOUS EMISSIONS .................................................................. 24 FREQUENCY STABILITY .................................................................................................... 27 TRANSIENT FREQUENCY BEHAVIOR ................................................................................ 28 EMC EQUIPMENT LIST ...................................................................................................... 31 Applicant: MIDLAND RADIO CORPORATION FCC ID: MMA944100B IC CERT #: 3690A-944100B Report: M\MidlandRadio MMA\2861AUT12\2861AUT12TestReport.doc Page 3 of 31 GENERAL REMARKS The attached report shall not be reproduced except in full without the written permission of Timco Engineering Inc. The test results relate only to the items tested. Summary The device under test does: fulfill the general approval requirements as identified in this test report not fulfill the general approval requirements as identified in this test report Attestations This equipment has been tested in accordance with the standards identified in this test report. To the best of my knowledge and belief, these tests were performed using the measurement procedures described in this report. All instrumentation and accessories used to test products for compliance to the indicated standards are calibrated regularly in accordance with ISO 17025: 2005 requirements. Testing Certificate # 0955-01 I attest that the necessary measurements were made, under my supervision, at: Timco Engineering Inc. 849 NW State Road 45 Newberry, Fl 32669 Authorized Signatory Name: Mario de Aranzeta C.E.T. Compliance Engineer/ Lab. Supervisor Date: December 11, 2012 Applicant: MIDLAND RADIO CORPORATION FCC ID: MMA944100B IC CERT #: 3690A-944100B Report: M\MidlandRadio MMA\2861AUT12\2861AUT12TestReport.doc Page 4 of 31 GENERAL INFORMATION DUT Specification DUT Description UHF BASE TECH IV TRANSCEIVER FCC ID MMA944100B IC Certification 3690A-944100B Model Number 94-4100B Serial Number N/A Operating Frequency 450 – 475 MHz Test Frequencies 450.0, 460.0, and 470.0 MHz Type of Emission 11K2F3E, 11K2F3D, 8K10F1D, 8K10F1E, 8K10F1W Modulation FM DUT Power Source 110–120Vac/50– 60Hz DC Power 12V Battery Operated Exclusively Test Item Prototype Pre-Production Production Type of Equipment Fixed Mobile Portable Test Conditions The temperature was 26ºC with a relative humidity of 50%. Modification to the DUT None Test Exercise The DUT was placed in continuous transmit mode. Applicable Standards ANSI/TIA 603-C:2004, FCC CFR 47 Part 90, IC RSS- 119, RSS-GEN Test Facility Timco Engineering Inc. at 849 NW State Road 45 Newberry, FL 32669 USA. Applicant: MIDLAND RADIO CORPORATION FCC ID: MMA944100B IC CERT #: 3690A-944100B Report: M\MidlandRadio MMA\2861AUT12\2861AUT12TestReport.doc Page 5 of 31 TEST PROCEDURES Power Line Conducted Interference: 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 …

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