MMAG225GMRS/ FRS 22 Channel Portable Radio

http://www.midlandradio.com Owner’s Manual For Models G-225 & G-227 GMRS/FRS Radio FEATURING • 22 Channels • 38 CTCSS codes • VOX • Monitor function • Call Alert • Back-Lit LCD • Vibrate Alert (G-227 Only) • Scan • Roger Beep Tone http://www.midlandradio.com - 2 - Use and Care 1. Do not use alcohol or cleaning solutions to clean the radio. 2. Do not immerse the radio in water. 3. Use a soft damp cloth to clean the radio 4. Dry the radio with dry lint-free cloth should it get wet. 5. Turn off the radio and remove th e batteries during long-term storage. This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device does not cause harmful interference, and (2) this radio must accept any interference received, including interference that may cause undesired operation. To maintain compliance with FCC’s RF exposure guidelines, For body-worn operation, this radio has been tested and meets the FCC RF exposure guidelines when used with Midlan d Radio Corp. accessories supplied or designated for this product. Use of other accessories may not ensure compliance with FCC RF exposure guidelines. (Tested with Headset Model:22540 and Earpiece/La pel-Mic Model: 22405.) http://www.midlandradio.com - 3 - Index Accessories 4 Accessories order form 5 Introduction 6 FCC Licensing Information 6 Controls and Buttons 7 LCD Display 8 Installing Batteries 9 Charging the Batteries 10 Operation 11-18 Problems & Solution 19-20 Frequency and CTCSS Charts 21 Technical Specification 22 Warranty Information 23 MIDLAND Family Products 24 http://www.midlandradio.com - 4 - Accessories – Accessories can be purchased at www.midlandradio.com or fill in the form on the following page and mail it to our address. AVP- 1 AVP-2 - 2 Over the ear Mic. - Headsets w/ PTT. - $19.95 - One Dual Desk Charger - 2 Rechargeable battery packs - 1 AC Adapter - $39.95 http://www.midlandradio.com - 5 - ACCESSORIES ORDER FORM Please send Money Order or fill in Visa/Master Card information and mail to the address below. Please DO NOT sent cash or checks. Make Money Order to Midland Radio Corporation. Name:___________________________ ____ __________________ Address:________________________________________________ City:_____________________ State_____ Zip Code_____________ Tel: _________________ email: __________________________ CC#______________________ Type:___________ Exp._________ Qty Item Price Total AVP-1 $19.95 AVP-2 $39.95 Sub-Total ____________ Tax (MO, CO, IL, FL only) ____________ S&H (U.S. only) _______ $8.95 Total $___________ Mail To: Midland Radio Corporation Consumer. Dept. 1120 Clay St. N. Kansas City MO 64116 ---------------- Or Call 816.241.8500. ---------------- To order online go to www.midlandradio.com http://www.midlandradio.com - 6 - Introduction Your G-225/227 represents the state-of-the-art in high-tech engineering. Designed for General Mobile Radio Service operation, this compact pack age is big in performance. It is a quality piece of electronic equipment, skillfully constructed wi th the finest components. The circuitry is all solid-state and mounted on a rugged printed circ uit board. Your G-225/227 is designed for reliable and trouble-free performance. FCC Licensing Information Your G-225/227 operates on General Mobile Radi o Service (GMRS) frequencies and is subject to the Rules and Regulations of the Federal Communications Commission (FCC). The FCC requires that all operators using General Mob ile Radio Service (GMRS) frequencies obtain a radio license before operating their equipment for business, personal or recreational use. A GMRS license held by an individual may be shared by immediate family members. To obtain the application form, call the FCC forms hotline at 1-800-418-3676 or go to http://www.fcc.gov . Please request forms 605 and 159 which include all necessary forms and instructions. For questions concerning licensing, please contact the FCC at 1-888-CALL-FCC (1-888-225- 5322), or go to http://www.fcc.gov/wtb/prs/genmbl.html . http://www.midlandradio.com - 7 - Control Buttons & Indicators Speaker Microphone Use to: Monitor Channel Activity Use to: - Scan for active channels - Lock the key pad Use to: - Turn On/Off the Radio - Enter/Exit the menu Use to: - Increase the volume - Scroll through the menu Use to: - Decrease the Volume - Scroll through the menu Ext. Spk/Mic Use to: - Talk on the Radio - Send a Call Tone - Save a setting http://www.midlandradio.com - 8 - LCD Display VOX Icon Low Battery level Indicator Key Pad Lock Icon Vibrate Mode Icon (G-227 ONLY) Transmit (TX) Icon Channel Indicator CTCSS Channel Indicator Receive (RX) Icon Power Hi/Lo Indicator http://www.midlandradio.com - 9 - Installing Batteries Your G-225/227 radio operates with either 4 AAA Alkaline Batteries or optional NiMH battery Pack. The belt clip should be removed (Page 18) to ease installation or removal. To install the batteries: 1. With the back of the radio facing you, re move the Battery Cover by sliding it down from the unit. 2. Insert 4 AAA batteries observing the po larity as shown. Installing the batteries incorrectly will prevent the unit from operating or can damage the unit. 3. Return the Battery Cover by sliding it up from the unit. Note: Batteries are not included http://www.midlandradio.com - 10 - Charging the batteries Your G-225/227 is equipped to allow using a rechargeable NiMH battery pack (not included) which can be recharged by an A/C Charger/Adaptor (not included) through the MIC Jack of the radio, or using a Desktop Charger (not incl uded). Batteries must be charged when the low battery icon flashes on the display. Do not char ge alkaline batteries of any kind in the unit. To charge through the MIC Jack : - Connect the AC Adaptor/Charger into an A/C Wall Outlet - Insert the Adaptor/Charger jack into the MIC Jack of the radio found at the side of the unit. To charge through a Desktop Charger: - Connect the AC Adaptor into an A/C Wall outlet - Insert …

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G225 TECHNICAL DESCRIPTION Page 1 A). GENERAL DESCRIPTION The G225 GMRS radio is a self-contained transceiver unit with integral antenna intended for use as a general communication tool. It is designed to operate on all 22 channels allocated by the FCC for the licensed FRS & GMRS. This model also features a CTCSS system with 38 pre-defined, user selectable sub-audible tones for channel quieting. The useable range, while dependent upon terrain and other radio propagation principles, is typically five miles. The G225 uses the maximum transmit power allowed to help ensure the maximum communication range. Features include: 22 FRS, GMRS Channels with 38 CTCSS codes, Digital Receive Volume Control, Channel Monitor, Page and LCD Display. The unit is equipped with an external Headset option connector. Four AAA alkaline batteries that are readily available in retail outlets supply operating power. An automatic power savings feature allows the typical standby battery life to extend to more than 10 days. B). FREQUENCY DETERMINING CIRCUITS The fundamental frequency for both the transmitter and the receiver local oscillators are controlled by a phase lock loop (PLL) circuit IC201 (Toshiba TB31202, or equipvalent). The frequency of operation of the FRS voltage controlled oscillator (VCO), composed of Q301 and Q302 operating in cascade is phase locked to a voltage controlled crystal reference (VCXO) operating at 20.95MHz (X202). The VCO is locked to the fundamental of the transmit signal in the transmit mode and is locked to the receive 1 st LO (Fundamental channel frequency minus 21.4MHz) in the receive mode. The crystal reference frequency is shared with the 2 nd LO of 20.95MHz. C). TRANSMITTER CIRCUITS The transmitter amplifies the 0 dBm signal from the VCO to approximately 31 dBm that is fed to the antenna. The transmitter is a three stage amplifier composed of Q1,2,3,4 and Q11. The first two stages are operated class A and the final is operated class B in full saturation to help prevent unwanted amplitude modulation. The fundamental transmit signal is fed through an elliptical low pass filter (5-pole, 2 zero) in order to suppress the harmonics to below –50 dBc. The desired frequency modulation of the carrier is accomplished by modulating the current in the VCO directly with the microphone audio signal. The microphone audio is conditioned with a three- pole high pass filter at 300 Hz (IC5C,D), a hard clipper circuit (IC5B) to limit G225 TECHNICAL DESCRIPTION Page 2 maximum deviation to +/- 2.5 kHz and a three-pole low pass or splatter filter at 2.8 kHz (IC5A). The low pass filter insures that the occupied bandwidth of the FM modulated signal meets FCC requirements under all input conditions. D). RECEIVER CIRCUITS The received signal from the antenna is band limited to 600 Mhz by the transmitter harmonic filter. The desired signal is fed to a low noise amplifier (LNA – Q6) centered from 460 to 470 MHz that provides approximately 10 dB of gain. The output of the LNA is filtered with a Band Pass filter (C41,L16,C43,L17,C15,L5) with pass-band of 460 to 470 MHz and stopband attenuation of 10 dB. The filtered receive signal is one input to the 1 st mixer (Q8), the other mixer input (1 st LO) is the output of the VCO at the desired channel frequency minus 21.4MHz. The output of the mixer is tuned to the 1 st IF of 21.4 MHz. The 1 st IF is transformer coupled for impedance matching to a X-tal filter centered at 21.4MHz with a bandwidth of +/-3.75Hz. The filtered 1 st IF is then amplified by Q9 and fed to the 2 nd mixer input of the multi-function receiver IC (IC1). The 2 nd LO (20.95 MHz) is generated by VCXO that is the reference frequency for the PLL. The 2 nd mixer output of 450 kHz is filtered through a 4 section ceramic filter that in combination with the 21.4MHz X-tal filter provides approximately 50 dB of adjacent channel attenuation. The 450 kHz 2 nd IF is then amplified, limited and fed to a quadrature detector for FM demodulation. The resulting audio output signal is bandpass filtered from 300 to 3 kHz (Q22) and amplified to provide 150mW of audio power (IC2). A squelch circuit is provided (IC1 pins 10 through 11) to mute the receiver noise under low signal conditions. The squelch circuit amplifies and detects noise in a narrow bandwidth at approximately 5 kHz. When the detected noise exceeds a threshold set to trigger at approximately 9 dB SINAD receive signal strength, the audio output is muted. E). TRANSMIT/RECEIVE SWITCH When the radio is in the transmit mode, pin diode switches D13 and D1 are both turned on (representing less than 0.7 ohms). D13 allows the transmit signal to pass to the antenna and D1 shorts one leg of a T matching network (L3, L15 and C4) to ground in the receive path. This results in a parallel tuned circuit high impedance being presented to the transmit signal so that the receive path does not load the transmit signal. In the receive mode, both D13 and D1 are off, resulting in the antenna signal being coupled into the receive LNA through the 50 ohm T matching network and the unwanted load of the transmit final amplifier is reduced to less than 1 pF by D1. F). RADIO CONTROL CIRCUIT A microprocessor (CPU1) is used to control the transceiver. User stimuli is provided through a tack switch for PTT (push to talk), along with the keypad G225 TECHNICAL DESCRIPTION Page 3 for channel selection, channel monitor, receive volume, and page. Pressing the PTT switch instructs CPU1 to switch to the transmit mode. This is accomplished by loading the proper channel counter information through a 3- wire serial link to the PLL IC (IC201), turning on power to the PLL and VCO, microphone and transmit audio circuits and the transmit RF amplifiers. Pressing the call switch causes the microcontroller to transmit a warbling tone for approximately 3 seconds on the current channel selected that is used to notify another person with FRS radio that you wish to communicate. Pressing the channel Up/Dow…

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G225 ALIGNMENT PROCEDURE Page 1 1. REFERENCE TEST EQUIPMENT A. HP8921A Cell site test set or HP8920A, B Communication Test Set with Spectrum Analyzer option. B. Fluke 187 Digital Voltmeter C. HP E3615A Power supply 2. TEST POINT A. ANTENNA : Test point is not prepared. Use antenna contact with TP11(antenna ground). B. VCO reference voltage : Test point 1 is prepared. C. RX audio output : Test point 12 is prepared or use ear-jack(3.5mm). D. TX Mic. Input : Test point is not prepared. Please use ear-jack(2.5mm) with 10uF coupling capacitor. It will be prepared on next PCB. E. Battery Vcc : Test point is not prepared. Please use mechanical contact. It is posited on bottom right corner of PCB. F. Up Key : Test point 3 is prepared. G. Down Key : Test point 4 is prepared. H. Function/Power Key : Test point 6 is prepared. I. Monitor Key : Test point 10 is prepared. J. PTT Key : Test point 2 is prepared. K. SCAN Key : Test point is not prepared. It will be prepared on next PCB. Note. : All key can be activated when connect with ground. 3. VCO ALIGNMENT A. Set unit to Channel 1 and connect a voltmeter to TP1 (VCO PD). B. Press & hold PTT. C. Extend L303 until the voltmeter reads 3.0V. D. Put shield-can on VCO area and monitor the voltage on TP1. The voltage should be 2.0Vdc +/-0.2Vdc. If the voltage is not 2.0Vdc +/-0.2Vdc, realign L303 until meet to requirement. E. Release PTT button so units is in receiving mode and monitor the voltage on TP1. The voltage should be in the range 2.0Vds +/-0.5V F. Set unit to channel 14. 6. Press & hold the PTT switch and observe the voltage on TP4. The voltage should be 2 – 3,5 Vdc. 7. Release PTT and observe the voltage on TP4. The voltage should read between 2.0 - 3.5 Vdc. Note : VCO shield-can should be soldered after VCO alignment is finished. 4. TRANSMITTER FREQUENCY ALIGNMENT A. Press & hold the PTT button. B. Align CT201 trimmer capacitor such that the output frequency is equal to the channel frequency with a maximum error of +/- 200 Hz. CT201 is located on the left side of 20.95MHz X-tal. G225 ALIGNMENT PROCEDURE Page 2 5. TRANSMITTER OUTPUT POWER CONFIRMATION A. Set unit to channel 1. B. Press & hold the PTT button. C. Transmit power should normally be between 1.6W to 1.8W. D. Set unit to channel 14. E. Press & hold the PTT button. Ensure that Tx Power meets spec range of 5.D. 6. TRANSMITTER DEVIATION ALIGNMENT A. Connect an audio generator (600 ohms) to the ear jack. The audio frequency should be set at 1KHz with a level of 200mV RMS. B. Connect an FM deviation meter (communications test set) to Antenna contact. Set the monitor to read peak to peak divided by two [(pk-pk)/2] deviation. Set filter of equipment from 25Hz to 15KHz. C. Press & hold the PTT button. D. Align RV2 for +/- 2.2 kHz deviation (+/-0.1KHz). RV2 is located on the bottom of the VCO shield can. E. Decrease audio generator level until deviation reads +/- 1.5 kHz (approximately 12mV) and record generator level. Level should be between 10 mV and 15 mV. F. Confirm that transmit audio distortion is less than 5%. 7. RECEIVER ALIGNMENT A. Set the output level of the RF signal generator for -47dBm. The generator should be set for 1.5 kHz deviation at 1 kHz audio. B. Set volume level 4 (It is initial.). C. Connect Audio analyzer to TP12. D. Set equipment filter 25Hz to 15KHz. E. Align CF2 to get a maximum output level & a minimum distortion and confirm that Rx audio distortion is less than 3%. F. Confirm that Rx Sensitivity is less than –120dBm (nominally –123dBm) by reducing the output level of the RF signal generator until a 12 dB SINAD reading is achieved. H. Set SSG output level until 9dB sinad sensitivity and align RV1 until the unit is un-squelched. I. Set signal generator level to –47dBm. J. With 1.5KHz deviation at 1KHz modulation, set volume for maximum audio. Audio level should be on over than 1.9Vrms. 8. BATTERY INDICATOR CONFIRMATION A. Set unit to receiving mode. Don’t set transmitter mode.. B. Set power supply voltage to 6V. C. Decrease power supply voltage until low battery icon blinks. 9. POWER OFF CURRENT CONSUMPTION A. Set power supply voltage to 6V and connect to unit. B. Confirm current. It must be less than 100uA. G225 ALIGNMENT PROCEDURE Page 3 10. FREQUENCIES TABLE Channel Freq. MHz Channel Freq. MHz 1 462.5625 12 467.6625 2 462.5875 13 467.6875 3 462.6125 14 467.7125 4 462.6375 15 462.5500 5 462.6625 16 462.5750 6 462.6875 17 462.6000 7 462.7125 18 462.6250 8 467.5625 19 462.6500 9 467.5875 20 462.6750 10 467.6125 21 462.7000 11 467.6375 22 462.7250

G225 PRODUCTION SPECIFICATION Page 1 1. GENERAL SPECIFICATION Items Specifications 1 Tx Frequency range 462.550MHz ∼ 467.7125MHz 2 Tx VCO Frequency range Same as item 1 3 RX Frequency range Same as item1 4 RX VCO Frequency range 441.150MHz ∼ 446.3125MHz ( Lower Heterodyne ) 5 Channel Number Channel Spacing 22CH 25KHz 6 Frequency Control PLL Synthesizer with Temperature Compensated Crystal Reference 7 IF frequencies 21.4 MHz for 1’st IF 450KHz for 2’nd IF 8 Modulation FM (F3E emissions) 9 Standard Test Modulation signal Modulated audio Frequency : 1KHz Test modulation : +/-1.5KHz 10 TX Frequency stability Max. +/-2.5ppm ( -20°C to +50°C) Nominal test temperature Range 25°C +/- 5°C 11 Extreme operating temperature Range -20°C to +50°C 12 Antenna Impedance 50 ohm +/- 25 ohm 13 Power source 4 AAA Alkaline batteries or 4 AAA Ni-HM rechargeable batteries Test Power Supply Voltage 6.0Vdc. +/-0.1Vdc 14 Extreme Supply Voltage Range 4.2Vdc to 6.5Vdc 15 Battery life time ( Typ. 5/5/90 duty) Min. 45 Hours 16 Microphone Self contained Electret 17 Speaker Self contained 8 ohm G225 PRODUCTION SPECIFICATION Page 2 2. DETAILED SPECIFICATION A. RECEIVER SECTIONS * Normal test condition * TYP. LIMIT 1. MAXIMUM USABLE SENSITIVITY * 1KHz +/-1.5KHz DEV. * REF. CHANNEL 1 & 8 -124dBm <-120dBm 2. 20dB QUIETING SENSITIVITY * 1HKz +/-1.5KHz DEV. * REF. CHANNEL 1 & 8, 12dB SINADDER -118dBm <-116dBm 3. ADJACENT CHANNEL TWO SIGNAL SELECTIVITY & SENSITIZATION * +/- 1 CHANNEL SPACING >50dB 4. INTER-MODULATION SPURIOUS RESPONSE ATTENUATION >50dB 5. SPURIOUS EMISSIONS * CONDUCTIVE CONNECTION <-53dBm 6. RECEIVE FREQUENCY RESPONSE * REF. 1KHz +/-1.5KHz DEV. 250Hz 3KHz -18.0dB -12.0dB +/-2.0dB +/-3.0dB 7. AUDIO OUTPUT LEVEL * REF. 1KHz +/-1.5KHz DEV. * (No LOAD ) * Volume Max. 1.8V >1.3V 8. AUDIO OUTPUT DISTORTION * REF. 1KHz +/-1.5KHz DEV. * ( No LOAD ) <5% 9. MAX. S/N RATIO * REF. 1KHz +/-1.5KHz DEV. * ( No LOAD ) 36 dB >30dB 10. RX VCO REF. VOLTAGE * REF. CHANNEL 1 * REF. CHANNEL 8 1.7V 1.7V +/-0.3V +/-0.3V 11. SQUELCH THRESHOLD * REF. 1KHz +/-1.5KHz DEV.* 9dBsinadder -3dB - +3dB 16. CURRENT CONSUMPTION * Un-squelched Volume Max. * Squelched * Power Off 200mA 35mA 50uA +/-40mA <40mA <100uA G225 PRODUCTION SPECIFICATION Page 3 B. TRANSMITTER SECTIONS TYP LIMIT 1. TRANSMITTER FREQUENCY TOL. * REF. CHANNEL 1 <+/-200Hz 2. TRANSMITTER RF POWER * REQUIRED CONDUCTIVE CONNECTION * REF. CHANNEL 1 Hi Power Low Power 1.7W 0.4W +0.1W / –0.4W +/-0.2W 3. TRANSMITTER OCCUPIED BANDWIDTH * REQUIRED CONDUCTIVE CONNECTION * REF. CHANNEL 1 @12.5KHz <-50dBC 4. TRANSMITTER SPURIOUS * REQUIRED CONDUCTIVE CONNECTION * REF. CHANNEL 8 <-50dBC 5. MODULATION SENSITIVITY * REF. 1KHz AUDIO * CHANNEL 1 , @+/-1.5KHz 12mV +/-3mV 6. MODULATION LIMITING * REF. 1KHz AUDIO, CHANNEL 1 * (INPUT AUDIO ; 200mVrms) +/-2.2KHz +/-0.2KHz 7. CTCSS CODE DEVIATION * CH 1 * CH38 0.4KHz 0.4KHz +/-0.1KHz +/-0.1KHz 8. MODULATION AUDIO DISTORTION * REF. 1KHz AUDIO +/-1.5KHz 3% <5% 8.TX AUDIO FREQUENCY RESPONSE * REF. 1KHz AUDIO, CHANNEL 1 * ( INPUT AUDIO ; 3mVrms ) 250Hz 3KHz 6KHz -31.0dB +6.0dB -16.0dB +/-3.0dB +/-3.0dB +/-3.0dB 9. TX MODUALTION S/N * REF. 1KHz AUDIO, CHANNEL 1 * ( REF. INPUT AUDIO ; 12mVrms ) >30dB 10. TX VCO REF. VOLTAGE * CHANNEL 1 * CHANNEL 14 1.5V 2.5V +/-0.3V +/-0.3V 11. CURRENT CONSUMPTION 600mA +/-100mA

APPLICANT: MIDLAND RADIO CORPORATION FCC ID: MMAG225 REPORT #: M/MidlandRadio_MMA\1203UT2\1203UT2TestReport.doc TABLE OF CONTENTS TABLE OF CONTENTS LIST APPLICANT: MIDLAND RADIO CORPORATION FCC ID: MMAG225 TEST REPORT: PAGE 1......COVER SHEET - GENERAL INFORMATION & TECHNICAL DESCR. PAGE 2......TECHNICAL DESCRIPTION CONTINUED PAGE 3......RF POWER OUTPUT PAGE 4......MODULATION CHARACTERISTICS PAGE 5......AUDIO FREQUENCY RESPONSE GRAPH PAGE 6......MODULATION LIMITING GRAPH – 300Hz PAGE 7......MODULATION LIMITING GRAPH – 1000Hz PAGE 8......MODULATION LIMITING GRAPH – 2500Hz PAGE 9......AUDIO LOW PASS FILTER GRAPH PAGE 10.....OCCUPIED BANDWIDTH PAGE 11.....OCCUPIED BANDWIDTH PLOT PAGE 12.....OCCUPIED BANDWIDTH PLOT - CW PAGE 13.....SPURIOUS EMISSIONS AT ANTENNA TERMINALS PAGE 14.....UNWANTED RADIATION PAGE 15.....METHOD OF MEASURING RADIATED SPURIOUS EMISSIONS PAGE 16.....FREQUENCY STABILITY PAGE 17-19..LIST OF TEST EQUIPMENT EXHIBITS CONTAINING: EXHIBIT 1.........FCC ID LABEL SAMPLE EXHIBIT 2.........LABEL LOCATION EXHIBIT 3.........EXTERNAL PHOTOGRAPHS EXHIBIT 4.........INTERNAL PHOTOGRAPHS EXHIBIT 5.........BLOCK DIAGRAM EXHIBIT 6.........SCHEMATICS EXHIBIT 7.........USER'S MANUAL EXHIBIT 8.........CIRCUIT DESCRIPTION EXHIBIT 9.........ALIGNMENT PORCEDURE EXHIBIT 10........TEST SET UP PHOTO APPLICANT: MIDLAND RADIO CORPORATION FCC ID: MMAG225 REPORT #: M/MidlandRadio_MMA\1203UT2\1203UT2TestReport.doc Page 1 of 19 GENERAL INFORMATION REQUIRED FOR CERTIFICATION 2.1033(c)(1)(2) MIDLAND RADIO CORPORATION will manufacture the FCCID: MMAG225 GMRS/FRS COMBINATION TRANSCEIVER in quantity, for use under FCC RULES PART 95. MIDLAND RADIO CORPORATION 1120 CLAY STREET NORTH KANSAS CITY, MO. 64116 2.1033 (c) TECHNICAL DESCRIPTION 2.1033(c)(3) Instruction book. A draft copy of the instruction manual is included as EXHIBIT 7. 2.1033(c) (4) Type of Emission: 10K0F3E 95.631 Bn = 2M + 2DK M = 2500 D = 2500 Bn = 2(2500)+2(2500) = 10.0K GMRS Authorized Bandwidth 20.0 kHz 2.1033(c)(5) GMRS Frequency Range: 1. 462.5500 13. 462.7000 95.621 2. 462.5625 14. 462.7125 3. 462.5750 15. 462.7250 4. 462.5875 16. 467.5500 5. 462.6000 17. 467.5750 6. 462.6125 18. 467.6000 7. 462.6250 19. 467.6250 8. 462.6375 20. 467.6500 9. 462.6500 21. 467.6750 10. 462.6625 22. 467.7000 11. 462.6750 23. 467.7250 12. 462.6875 2.10311c)(6)(7) The Maximum Output Power Rating: GMRS - 1.75 Watts FRS - 0.41 Watts FRS Authorized Bandwidth 12.5 kHz 2.1033(c)(5) FRS Frequency Range: 1. 462.5625 8. 467.5625 95.627 2. 462.5875 9. 467.5875 3. 462.6125 10. 467.6125 4. 462.6375 11. 467.6375 5. 462.6625 12. 467.6625 6. 462.6875 13. 467.6875 7. 462.7125 14. 467.7125 MHz APPLICANT: MIDLAND RADIO CORPORATION FCC ID: MMAG225 REPORT #: M/MidlandRadio_MMA\1203UT2\1203UT2TestReport.doc Page 2 of 19 2.1033(c)(6)(7) Power Output shall not exceed 0.50 Watts effective 95.639 radiated power. There can be no provisions for 95.649 increasing the power or varying the power. 2.1033(c)(8) DC Voltages and Current into Final Amplifier: FINAL AMPLIFIER ONLY FOR LOW POWER SETTING INPUT POWER: (6.0V)(.210A) = 1.26 Watts FOR HIGH POWER SETTING INPUT POWER: (6.0V)(.600A) = 3.60 Watts 2.1033(c)(9) Tune-up procedure. The tune-up procedure is included as EXHIBIT # 9. 2.1033(c)(10) Complete Circuit Diagrams: The circuit diagram is included as EXHIBIT 6 of this report. The block diagrams are included as EXHIBIT 5 of this report. 2.1033(c)(11) A photograph or a drawing of the equipment identification label is included as exhibit No. 1. 2.1033(c)(12) Photographs(8"X10") of the equipment of sufficient clarity to reveal equipment construction and layout, including meters, labels for controls, including any view under shields. See exhibits 3-4. 2.1033(c)(13) Digital modulation is not allowed. 2.1033(c)(14) The data required by 2.1046 through 2.1057 is submitted below. APPLICANT: MIDLAND RADIO CORPORATION FCC ID: MMAG225 REPORT #: M/MidlandRadio_MMA\1203UT2\1203UT2TestReport.doc Page 3 of 19 95.639 Power Output shall not exceed 50.0 Watts effective radiated power. There can be no provisions for 95.649 increasing the power or varying the power. 2.1046(a) RF power is measured by the substitution method as outlined in TIA/EIA - 603. With a nominal battery voltage of 6.0 V, and the transmitter properly adjusted the RF output measures: OUTPUT POWER: HIGH 1.75 Watts ERP FRS: 0.41 Watts ERP 2.1046(a) RF power output. The test procedure used was TIA/EIA-603 S2 APPLICANT: MIDLAND RADIO CORPORATION FCC ID: MMAG225 REPORT #: M/MidlandRadio_MMA\1203UT2\1203UT2TestReport.doc Page 4 of 19 2.1047(a)(b) Modulation characteristics: AUDIO FREQUENCY RESPONSE The audio frequency response was measured in ac- cordance with TIA/EIA Specification 603. The audio frequency response curve is shown on the next page. The audio signal was fed into a dummy microphone circuit and into the microphone connector. The input required to produce 30 percent modulation level was measured. See Page 5 of report. 2.1047(b) Audio input versus modulation The audio input level needed for a particular per- percentage of modulation was measured in accor- dance with TIA/EIA Specification 603. The audio input curves versus modulation are on the following pages. Curves are provided for audio input frequen- cies of 300, 1000, and 3000 Hz. See Pages 6,7 & 8 of report. 95.637 Post Limiter Filter Each GMRS transmitter, except a mobile station transmitter with a power of 2.5Watts or less, must be equipped with an audio low pass filter. At any frequency between 3 & 20 kHz the filter must have an attenuation of 60log (f/3) greater than the attenuation at 1KHz. See Page 9 of report. APPLICANT: MIDLAND RADIO CORPORATION FCC ID: MMAG225 REPORT #: M/MidlandRadio_MMA\1203UT2\1203UT2TestReport.doc Page 5 of 19 AUDIO FREQUENCY RESPONSE GRAPH Midland Radio Corp. G225 -54 -49 -44 -39 -34 -29 -24 -19 -14 100100010000 Frequency dBmV audio response APPLICANT: MIDLAND RADIO CORPORATION FCC ID: MMAG225 REPORT #: M/MidlandRadio_MMA\1203UT2\1203UT2TestReport.…

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Test Report S/N: 112802-318MMA Test Date(s): December 20, 2002 FCC SAR Evaluation © 2002 Celltech Research Inc.1 of 21 Celltech Research Inc. declares under its sole responsibility that this device was found to be in compliance with the Specific Absorption Rate (SAR) RF exposure requirements specified in FCC 47 CFR §2.1093. The device was tested in accordance with the measurement standards and procedures specified in FCC OET Bulletin 65, Supplement C, Edition 01-01 (General Population / Uncontrolled Exposure). I attest to the accuracy of data. All measurements were performed by me or were made under my supervision and are correct to the best of my knowledge and belief. I assume full responsibility for the completeness of these measurements and vouch for the qualifications of all persons taking them. This test report shall not be reproduced partially, or in full, without the prior written approval of Celltech Research Inc. The results and statements contained in this report pertain only to the device(s) evaluated. Russell W. Pipe Senior Compliance Technologist Celltech Research Inc. DECLARATION OF COMPLIANCE SAR EVALUATION Test Lab CELLTECH RESEARCH INC. Testing and Engineering Lab 1955 Moss Court Kelowna, B.C. Canada V1Y 9L3 Phone: 250-448-7047 Fax: 250-448-7046 e-mail: [email protected] web site: www.celltechlabs.com Applicant Information MIDLAND RADIO CORPORATION 1120 Clay Street North Kansas City, MO 64116 Rule Part(s):FCC 47 CFR §2.1093 Test Procedure(s):FCC OET Bulletin 65, Supplement C (01-01) Device Type:Portable UHF GMRS/FRS PTT Radio Transceiver FCC ID:MMAG225 Model(s):G225 Modulation:FM (UHF) Tx Frequency Range:462.5500 - 462.7250 MHz (GMRS Channels 15-22) 462.5625 - 462.7125 MHz (FRS Channels 1-7) 467.5625 - 467.7125 MHz (FRS Channels 8-14) RF Conducted Power Tested:1.8 Watts (GMRS) Antenna Type(s):Fixed Battery Type(s):1.5V AAA Alkaline (x4) Body-Worn Accessories:Belt-Clip (supplied with radio) Headset/Boom-Microphone (Model: 22540) Earpiece/Lapel-Microphone (Model: 22405) Max. SAR Measured:0.892 W/kg Face-held / 1.12 W/kg Body-worn Test Report S/N: 112802-318MMA Test Date(s): December 20, 2002 FCC SAR Evaluation © 2002 Celltech Research Inc.2 of 21 TABLE OF CONTENTS 1.0INTRODUCTION..................................................................... 3 2.0DESCRIPTION OF DUT............................................................ 3 3.0SAR MEASUREMENT SYSTEM ............................................... 4 4.0MEASUREMENT SUMMARY..................................................... 5 5.0DETAILS OF SAR EVALUATION............................................... 6 6.0EVALUATION PROCEDURES................................................... 7 7.0SYSTEM PERFORMANCE CHECK............................................ 8 8.0SIMULATED TISSUES............................................................. 9 9.0SAR LIMITS........................................................................... 9 10.0SYSTEM SPECIFICATIONS...................................................... 10 11.0PROBE SPECIFICATION......................................................... 11 12.0SAM PHANTOM...................................................................... 11 13.0LARGE PLANAR PHANTOM..................................................... 11 14.0DEVICE HOLDER.................................................................... 11 15.0TEST EQUIPMENT LIST........................................................... 12 16.0MEASUREMENT UNCERTAINTIES............................................ 13 17.0REFERENCES.......................................................................14 APPENDIX A - SAR MEASUREMENT DATA.............................................15 APPENDIX B - SYSTEM CHECK DATA....................................................16 APPENDIX C - SYSTEM VALIDATION.....................................................17 APPENDIX D - PROBE CALIBRATION....................................................18 APPENDIX E - MEASURED FLUID DIELECTRIC PARAMETERS................19 APPENDIX F - SAM PHANTOM CERTIFICATE OF CONFORMITY..............20 APPENDIX G - SAR TEST SETUP & DUT PHOTOGRAPHS…

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