PDHGMRS-1100TFRS/GMRS COMBINATION TRANSCEIVER

GMRS1100 Users Manual Model GMRS-1100 (FCC License Required) Model GMRS-1100 DISPLAY 1. Beep Tone Indicator: Icon appears when beep button confirmation tone is selected; icon disappears when tone is off. 2. Key Lock Indicator: Icon appears when the keypad is locked. This function disables keys such as channel up/down and MODE. 3. Monitor Indicator: Icon appears when the Monitor (M) button is pressed and the channel monitor function is activated. 4 Signal Strength Indicator: Icon appears when a signal is being received. The icon consists of five bars to indicate the received signal level. The icon also represents transmit signal power during transmission. 5. Coded Tone Controlled Squelch System (CTC) Indicator: Icon appears when the CTCSS tone function is active. 6. Large Segment Display: Indicates the channel number in use. 7. Scan Indicator: This function allows the user to scan a channel and/or a tone code 5 second to search for a valid signal. 8. Emergency Indicator: EMG Icon appears when the EMG button is pressed. (The frequency is NOT monitored by authorities). 9. Battery Level Indicator: Icon indicates the battery charge level. 10.Hi/LO Indicators: Appropriate icon appears when the transmit power is set to desired output power. 11. RogerBeep Tone On/Off Indicator: This icon appears when the Roger Beep tone is on, and disappears when tone is not in use. 12. Small Segment Display: Displays the CTCSS tone option in the channel from (00-38). 13. Dual Watch Mode Indicator: Icon appears when dual watch mode is active. 14. Voice Activated Transmission (VOX) Indicator: This function allows hands free conversation. The icon appears when the VOX mode is activated. Powering the transceiver: Your GMRS 1100 radio transceiver operates on four AAA batteries. Alkaline batteries will provide slightly better performance than rechargeable batteries. Only Audiovox approved rechargeable batteries can be recharged in the radio transceiver using the optional charging stand. Installing the batteries: Battery installation is made more convenient when the belt clip is removed. To do this, release the spring clip securing the belt clip to radio and slide the belt clip downward and away from the radio body. Next, press down with the thumb at the arrow, slide the battery cover down and lift off the battery cover. Insert four AAA batteries (alternate positive ends (+) toward the bottom of the transceiver, (starting left-to-right). 1. Using thumb, press down on battery cover at arrow and slide cover down to open. 2. Slide the cover down and then lift cover at bottom to open. Remove cover. 3. Insert four AAA batteries (positive (+) end toward the bottom begining at left side and alternating positive terminals as shown),or insert the rechargeable batteries. The following guidelines will improve performance and provide longer operating times for the GMRS-1100: 1. Do not mix old and new batteries. 2. The use of alkaline-type batteries is recommended to provide the longest operating time. 3. Do not mix alkaline, standard (carbon-zinc) or rechargeable batteries. 4. If the unit is not to be used for an extended period of time, remove the batteries. Old or leaking batteries can cause damage to the unit and will void the warranty. GMRS-1100 OPERATIONAL MODES NOTE: To switch between GMRS and Weather Band modes, press and hold the Mode button for 2 seconds. To differentiate between operating modes, look for HI or LO indication below the battery power level indicator when in GMRS mode. In Weather Band mode, these indications are not present. Refer to the appropriate section of this manual for detailed operating instructions for each mode. When in GMRS standby mode, the transmit/receive indicator will flash once every S seconds as the unit checks for transmissions Controls: Power On/Off (15) Button Press and hold the power on/off button ( ) for at least 2 seconds. You will hear a confirming melody to indicate the unit is on. To turn the unit off, press and hold the button for at least 2 seconds. Adjusting the Volume With the unit powered on, press the Up Channel/Volume button (
) to increase volume and the Down Channel/Volume button () to decrease volume. The display will indicate the current volume level by the small number in the icon ( ) Monitor/Display Backlight Button (2) This button is used to to check activity on the current frequency before transmitting. Check activity by pressing the Monitor (M) Button longer than 2 seconds; the
 icon will apppear on the display and you will hear static if frequency is clear. Do not transmit if you hear conversation. Hold down the Monitor Button again longer than 2 seconds and the
 icon will disapppear from the display. The monitor function will temporarily bypass the squelch setting and play all signals on a given channel. This feature is useful when communicating with other parties at extreme range. By pressing the monitor button momentarily, the LCD backlight is turned on; the LCD backlight will turn off automatically in about 5 seconds, or when the monitor button is pressed momentarily once again. Push To Talk (PTT) Button (4) Pressing and holding this button will allow you to speak to any transceiver that is set to the same channel and privacy code setting as yours. Hold the transceiver approximately 1 to 2 inches from your face as you speak into the built in microphone (9). After you have finished speaking, release the PIT Button to allow reception of incoming signals. It is not possible to transmit and receive at the same time. The Transmit/Monitor LED at the upper right corner of the LCD Panel (8) will light red while the PTT Button is pressed and the signal indicator will display the relative strength of the transmitted signal. Releasing the button allows the unit to revert to standby mode. When receiving an incoming signal, the Transmit/Monitor LED indicator will light green and the received signal strength indicator ( ) will display the relative strenth of the signal…

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GMRS 1100 TECHNICAL DESCRIPTION Page 1 Jun 06, 2002 A). GENERAL DESCRIPTION The GMRS 1100radio 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 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 1100 uses the maximum transmit power allowed to help ensure the maximum communication range. Features include: 22 GMRS Channels with 38 CTCSS codes, Digital Receive Volume Control, Channel Monitor, Page, Keypad Lock, 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 IC102 (Toshiba TB31202, or equipvalent). The frequency of operation of the GMRS voltage controlled oscillator (VCO), composed of Q142 and Q143 operating in cascade, is phase locked to a voltage controlled crystal reference (VCXO) operating at 10.475 MHz (X102). Compensation for both temperature and power supply variations on the crystal reference is accomplished by measuring the ambient temperature and supply variation through an PWM circuit composed of diode (D101). The microcontroller (IC101) then converts these measurements to a correction voltage output through a PWM to maintain the frequency of the VCXO within the +/- 2.5 ppm requirement. 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 21.4 MHz) in the receive mode. The crystal reference frequency is fed through a doubler circuit to generate the 2 nd LO of 20.950 MHz. GMRS 1100 TECHNICAL DESCRIPTION Page 2 C). TRANSMITTER CIRCUITS The transmitter amplifies the 0 dBm signal from the VCO to approximately 30 dBm that is fed to the antenna. The transmitter is a three stage amplifier composed of Q201,202, Q203,204 and Q205. 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 –60 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 (IC103A,B), a hard clipper circuit (IC103C) to limit maximum deviation to +/- 2.5 kHz and a three-pole low pass or splatter filter at 2.8 kHz (IC103D). 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 – Q401) centered from 460 to 470 MHz that provides approximately 10 dB of gain. The output of the LNA is filtered with a Dielectric filter (SF401) with pass-band of 460 to 470 MHz and stopband attenuation of 50 dB. The filtered receive signal is one input to the 1 st mixer (Q402), the other mixer input (1 st LO) is the output of the VCO at the desired channel frequency minus 21.4 MHz. 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 crystal filter centered at 21.4 MHz with a bandwidth of 15 kHz. The filtered 1 st IF is then amplified by Q406 and fed to the 2 nd mixer input of the multi-function receiver IC (IC401). The 2 nd LO (20.950 MHz) is generated by frequency doubling the output of the 10.475 MHz VCXO that is the reference frequency for the PLL. The 2 nd mixer output of 450 kHz is filtered through a 6 section ceramic filter that in combination with the 21.4 MHz crystal 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 (Q408, IC103A, &IC103B) and amplified to provide 200 mW of audio power (IC402). A squelch circuit is provided (IC401 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 12 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 D201 and D202 are both turned on (representing less than 0.7 ohms). D202 allows the transmit signal to pass to the antenna and D201 shorts one leg of a T matching network (L203, L2044 and C207) GMRS 1100 TECHNICAL DESCRIPTION Page 3 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 D201 and D202 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 D201. F). RADIO CONTROL CIRCUIT A microprocessor (IC101) is used to control the transceiver. User stimuli is provided through a tack switch for PTT (push to talk), along with the keypad for channel selection, channel monitor, receive volume, and…

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TRANSMITTER ALIGNMENT METHOD GMRS 1100 1. Frequency Setting A. Connect a frequency counter or communications service monitor capable of at least five watt RF. B. Press the PTT switch. C. Adjust CV101 trimmer capacitor such that the output frequency is equal to the channel frequency with a maximum error of +/- 200 Hz. CV101 is located the center of bottom area. 2. Output Power Alignment A. Connect a communications service monitor or a wattmeter and dummy load to the antenna connector. B. Press the PTT switch. C. Adjust air coil (L205) by spreading or de-spreading, to achieve maximum power, not to exceed 1.4W. Note: Normally, it is not necessary. 3. Deviation Adjustment A. Connect an audio generator with 10uF coupling capacitor to the microphone jack. The audio frequency should be set at 1KHz with a level of 200mV. B. Connect an FM deviation meter or communications service monitor to the antenna connector. Set the monitor to read peak deviation. C. Press the PTT switch. D. Adjust RV201 for +/- 2.2KHz deviation. RV201 is located below the VCO shield. G


   




APPLICANT: TTI TECH CO., LTD. FCC ID: PDHGMRS-1100T REPORT #: T/TTI_PDH\603KT2\603KT2TestReport.doc TABLE OF CONTENTS TABLE OF CONTENTS LIST APPLICANT: TTI TECH CO., LTD. FCC ID: PDHGMRS-1100T 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......MODULATON LIMITING GRAPH – 1000Hz PAGE 8......MODULATION LIMITING GRAPH – 3000Hz 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 GMRS PAGE 15.....UNWANTED RADIATION FRS PAGE 16.....METHOD OF MEASURING RADIATED SPURIOUS EMISSIONS PAGE 17.....FREQUENCY STABILITY PAGE 18-21..LIST OF TEST EQUIPMENT EXHIBITS CONTAINING: EXHIBIT 1.........FCC ID LABEL SAMPLE EXHIBIT 2.........SKETCH OF LOCATION EXHIBIT 3.........EXTERNAL PHOTO – FRONT VIEW EXHIBIT 4.........EXTERNAL PHOTO – REAR VIEW EXHIBIT 5.........INTERNAL PHOTO – COMPONENT VIEW EXHIBIT 6.........INTERNAL PHOTO – COPPER VIEW EXHIBIT 7.........SCHEMATIC EXHIBIT 8.........BLOCK DIAGRAM EXHIBIT 9.........USERS MANUAL EXHIBIT 10........CIRCUIT DESCRIPTION EXHIBIT 11........TUNING PROCEDURE EXHIBIT 12........TEST SET UP PHOTO APPLICANT: TTI TECH CO., LTD. FCC ID: PDHGMRS-1100T REPORT #: T\TTI_PDH\603KT2\603KT2TestReport.doc Page 1 of 21 GENERAL INFORMATION REQUIRED FOR CERTIFICATION 2.1033(c)(1)(2) TTI TECH CO., LTD. will manufacture the FCCID: PDHGMRS-1100T GMRS/FRS COMBINATION TRANSCEIVER in quantity, for use under FCC RULES PART 95. TTI TECH CO., LTD. EUNDO BLDG. # 402, 737-19, BANPO-1DONG SEOCHO-KU, SEOUL, KOREA 137-041 2.1033 (c) TECHNICAL DESCRIPTION 2.1033(c)(3) Instruction book. A draft copy of the instruction manual is included as EXHIBIT 9. 2.1033(c) (4) Type of Emission: 9K5F3E 95.631 Bn = 2M + 2DK M = 3000 D = 1.75K Bn = 2(3000)+2(1750) = 9.5K 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 – HIGH 1.4 Watts LOW .32 Watts FRS - .32 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: TTI TECH CO., LTD. FCC ID: PDHGMRS-1100T REPORT #: T\TTI_PDH\603KT2\603KT2TestReport.doc Page 2 of 21 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 GMRS: FOR LOW POWER SETTING INPUT POWER: (6.0V)(.211A) = 1.266 Watts FOR HIGH POWER SETTING INPUT POWER: (6.0V)(.540A) = 3.240 Watts FRS: INPUT POWER: (6.0V)(.214)= 1.284 Watts 2.1033(c)(9) Tune-up procedure. The tune-up procedure is included as EXHIBIT # 11. 2.1033(c)(10) Complete Circuit Diagrams: The circuit diagram is included as EXHIBIT 7 of this report. The block diagrams are included as EXHIBIT 8 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 3-6. 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: TTI TECH CO., LTD. FCC ID: PDHGMRS-1100T REPORT #: T\TTI_PDH\603KT2\603KT2TestReport.doc Page 3 of 21 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: GMRS: HIGH 1.4 Watts ERP LOW .32 Watts ERP FRS: .32 Watts ERP 2.1046(a) RF power output. The test procedure used was TIA/EIA-603 S2 APPLICANT: TTI TECH CO., LTD. FCC ID: PDHGMRS-1100T REPORT #: T\TTI_PDH\603KT2\603KT2TestReport.doc Page 4 of 21 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: TTI TECH CO., LTD. FCC ID: PDHGMRS-1100T REPORT #: T\TTI_PDH\603KT2\603KT2TestReport.doc Page 5 of 21 AUDIO FREQUENCY REPSONSE PLOT TTI Tech Co. LTD. GMRS-1100T -…

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