AXATR-391-A2Mobile Radio

 KME 900 Instruction Draft 1, Receiver Circuit The FM dual-conversion super heterodyne receiver is designed for operation in the 935-941MHz frequency range. The Receiver has intermediate frequencies (IF) of 82.2MHz and 455KHz. Adjacent channel selectivity is obtained by using two band pass filters, a 82.2MHz crystal filter and a 455KHz ceramic filter. The FM-detector is Quadrature discriminator. 1-1 Receiver Front-end A RF signal from antenna is coupled though the low pass filters, antenna switch and band pass filter to the input of low noise amplifier TR201. The output of TR201 is coupled through band pass filter to input of 1’st Mixer TR203. Front End selectivity is provided by these band pass filter. 1-2 1’st Mixer The 1’st Mixer is a Transistor-Mixer (TR203), that converts a RF signal the 935-941MHz range to 82.2MHz 1’st IF frequency. In the mixer stage, A RF signal from the Front-end RF filter is applied to the input of the Transistor-Mixer. 1-3 1’st IF The 82.2MHz 1’st IF output signal is coupled from the output of T201 through IF amplifier TR204 and Crystal filter FL201 to IF-amplifier TR205. The highly-selective crystal filters FL201-1 and FL 201-2 provide the first portion of the receiver IF selectivity. The out put of the filters is coupled through the impedance-matching net work T204, C246 and R224 to 1’st IF amplifier TR205. 1-4 2’nd Mixer, 2’nd IF filter,2’nd IF amplifier and FM detector IC201 is an one-chip IC for FM communication system. It includes 2’nd Mixer, 2’nd IF amplifier and FM detector. The 2’nd Mixer is a Balanced Mixer, that converts a 1’st IF signal 82.2MHz range to 455KHz 2’nd IF frequency. The 2’nd IF signal is applied to Ceramic Filter FL203, which provides the 455KHz selectivity. The output of the 2’nd IF filter is applied to 2’nd IF amplifier in IC201. The 2’nd IF signal is then amplified, filtered and limited. Discriminator (DSC201) shifts the 2’nd IF signal by 90deg and applies it to the internal FM detector. The FM detector compares the shifted IF signal to the internal IF signal to recover the audio modulation. The audio output of IC201 is applied to audio amplifier buffer IC205-2. The audio output of IC205-2 is then applied to the SYSTEM CONTROL UNIT. 2, Transmitter Circuit The Transmitter Circuit consists of one Class-A Amplifier TR101, Pre-Driver IC101, PA Module IC102, RF Amplifier TR102, Automatic Power Control Circuit (TR105- TR107), Antenna Switch (CD103, CD105- CD107 and CD109), Low Pass Filter (Micro Strip Line and C146-C153, C181 and C183). 2-1 Class-A Amplifier The 896-902MHz and 935-941MHz RF input from Synthesizer output of TR316 is applied to the band pass filter FL301 through an attenuator pad R301-R303. RF input level is about +3dBm, that is amplified to +10dBm by TR101. This is controlled by TXENB+.  2-2 Pre-Driver The output of TR101 is applied to the Pre-Driver IC101 through an attenuator pad R106-R108. The output of R107 is also amplified to about 600mW by IC101. This is controlled by TXENB+. The Pre-Driver consists of three stages RF amplifier. The first and second stages in IC101 are operated in Class-B. The third stage in IC101 is operated in Class-C. 2-3 PA Module The output of IC101 is applied to the PA Module IC102 through an attenuator pad R110-R112. The output of R110 is amplified to about 13W. The PA Module consists of three stages RF amplifier. The first stage power supply voltage is controlled by power control circuit. The second and third stage power supply voltages are supplied by B_A+ via TR108. The first and second RF amplifiers are operated in Class-B. The third RF amplifier is operated in Class-C. 2-4 RF Amplifier The input (about 13W) of the RF Amplifier is amplified to 25W. Power Supply voltage for the RF Amplifier is connected with POWER SUPPLY BOARD through C1. 2-4 Automatic Power Control The Automatic Power Control circuit samples the output power to the antenna to maintain a constant power level across the band. Also, a thermistor circuit (TR104 and RT101) senses the PA Module temperature to reduce the power level when the temperature is above +110 °C. The Automatic Power Control circuit controls the supply voltage to the first stage in PA Module IC102. Directional coupler provides a sample of transmit power for diode CD102. Diode CD102 produce a positive DC voltage proportional to the transmit circuit output power level. When above VSWR 3, reflect coupler provides a sample of reflection power for diode CD101. Diode CD101 and CD102 produce voltages are summed, then that is compared to APCREF (D/A Voltage) from SYSTEM CONTROL UNIT by the amplifier TR105. The collector of TR105 is applied to DC amplifier TR106 and TR107, then the output voltage of TR107 controls to the first stage of PA Module. 2-5 Antenna Switch and Low Pass Filter The Antenna Switch consists of CD103, CD105-CD107, CD109 and the Low Pass Filter consists of micro strip line and C146-C153,C181 and C183. During transmit, TXENB+ line from SYSTEM CONTROL UNIT is high level. Transistor TR109 turns on supply +9VT to the Class-A Amplifier and Pre-Driver, Automatic Power Control circuit and PIN diode Antenna Switch CD103, CD105-CD107 and CD109. When transmitting, the Antenna Switch diode is low impedance. 3, Frequency Synthesizer Circuit The Frequency Synthesizer circuit receives PLL data, and control information from the microcomputer and from this generates the Tx / Rx RF frequencies. It also provides frequency lock status to SYSTEM CONTROL UNIT. It consist of the Reference Oscillator, PLL Frequency Synthesizer chip IC305, Loop filter, Rx VCO TR307, Tx VCO TR304, Feedback Buffer Amplifier, and Dual-Modulus Prescaler IC306. Rx VCO and Tx VCO are locked to the Reference Oscillator by a single direct-divide synthesis loop consisting of the Feedback Buffer, Prescaler, and PLL Frequency Synthesizer chip. The Tx VCO operates over a frequency range of 448-451MHz and 467.5-470.5MHz. The Rx VCO operates over a frequency range of 426.4-429.4MHz.  3-1 Refer…

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June 18, 1999 Federal Communications Commissions Authorization & Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046 Attention: Equipment Authorization Branch Subject:: Type Acceptance FCC ID: AXATR-391-A2 Members of the Commission, Ericsson Inc. request the Type acceptance of the AXATR-391-A2 mobile radio. The AXATR-391-A2 is a trunking mobile radio that operates in the 896-901 & 935-940 Mhz band at a power range from 6 to 25 Watts. All test have been performed in part 2 and part 90 pur- suant to the Type Approval requirements. Emissions designators to cover both receive and trans- mit frequencies for the purpose of using the talkaround function are being requested.. Sincerely, Bryan McWatters Staff Engineer (804) 592-6110 FAX (804) 592-6510 Email: [email protected]

AXATR-391-A2 Exhibit 3 Ericsson Inc. External Photos 3D Top Photo 3D Front Photo Bottom of unit Top of Unit Rear of Unit Remote Mount

AXATR-390-A2Exhibit 9Ericsson Inc. Internal Photos Display Board Back of Display Board Power Supply Board Back of Power Supply Board System Control Board Back of Sytem Control Board System Control Board in Case System Control Board with Shield Transmitter Board Transmitter Board Back

AXATR-391-A2 EXHIBIT 12 ERICSSON INC. 8 OCCUPIED BANDWIDTH Method of Measurement Per 2.989 (c,1) Data on Occupied Bandwidth is presented in the form of a spectrum analyzer plot which illustrates the transmitter sidebands. A plot is taken of the carrier sideband modulated with a 2500 Hz tone at a level 16 dB greater than that required to produce 50 percent modulation. (The spectrum analyzer grid indicates the reference level of the carrier unmodulated in all exhibits.) SECTION 3B,C,H Bn = 2M + 2DK where M = 3000 Hz Telephony D = 2000Hz K= 1(assumed) Bn = 10000 Therefore, Emission Designator are, 10K0F3E SECTION 3D & I Bn = 2(B/2) + 2DK where B = 9600 Hz Data, Digital Voice D = 2000 Hz K=1(assumed) Bn=13600 Therefore, Emission Designators are, 13K6F1D 13K6F1E

Exhibit 10 APPLICANT: FCC ID NO. AXATR-391-A2 ERICSSON INC ALIGNMENT PROCEDURE 6A-C Alignment Pro cedure 1, Tes t Equipment Service Monitor (HP8920B or equivalent) Spectrum Analyzer (HP8561E or equivalent) DC Voltmeter (Input Impedance > 1Megohms) DC Power Supply (13.6 Volts at 15A) IBM Personal Computer (or compatible equivalent) Programming Interface (TQ3370) KME Radio Programming Software (______) KME Programming Cable ( _______) KME DC Power Cable (U-PK-2223B) KME Microphone Cable ( _______) BNC-BNC Cable 50 ohm RF Power Attenuator (10dB, 100watts) <Initial setup> Attach DC Power Cable to Radio and Power Supply. Attach Programming Cable to Radio. Attach Interface Cable to Programming Interface and personal Computer. Set power supply to 13.6 Volts dc. Apply power to Radio, and turn radio on/off switch to on position. Execute radio programming software. Under software direction, program radio for the following conventional test channels. See the Figure 1. If test channel always set to figure 1, then it is not need to execute radio programming. Turn radio on/off switch to off position. Remove programming cable.Attach test cable. Remove the Top Cover, Bottom Cover and TRX shield Cover. Attach RF coaxial cable (50 ohms) between antenna connector and RF power attenuator. Attach second coaxial cable between attenuator and service monitor(RF port). Attach Microphone Cable to Radio. Attach BNC-BNC Cable between Programmin g Interface (RX AUDIO and TX AUDIO) and Service Monitor. Turn radio on/off switch to on position. Exhibit 10 APPLICANT: FCC ID NO. AXATR-391-A2 ERICSSON INC ALIGNMENT PROCEDURE Figure 1 FREQ(MHz) Band/Tx Power RX TX W/N Power (w) CTCSS (Hz) CDCSS Oct CH 1 935.1000 896.0125 N26 CH 2 938.2500 899.0000 N26 CH 3 940.9000 901.9875 N26 CH 4 935.1000 935.0125 N26 CH 5 938.2500 938.0000 N26 CH 6 940.9000 940.9875 N26 CH 7 935.1000 896.0125 N26 CH 8 938.2500 899.0000 N26 CH 9 940.9000 901.9875 N26 CH1 0 935.1000 935.0125 N26 CH1 1 938.2500 938.0000 N26 CH1 2 940.9000 940.9875 N26 CH1 3 939.4500 900.7000 N 26 627 CH1 4 939.4500 939.7000 N 26 100 CH1 5 939.4500 939.7000 N 26 627 CH1 6 939.3000 939.3000 N26 Exhibit 10 APPLICANT: FCC ID NO. AXATR-391-A2 ERICSSON INC ALIGNMENT PROCEDURE 2, Tx VCO Adjustment a, Set the Radio to CH6. b, Push PTT-key on Programmin g Interface. b, Monitor DC Voltage at test point TP301 c, Adjust Tx VCO CV301 to 6.0 +/- 0.2V 3, Tx Modulation Adjustment D Set the Radio to CH5. b. Set AF generator output level to 410mV. c. Push PTT-key on Programming Interface. d. Adjust TX Modulation RV305 until the FM Deviation is 2.2+0.1kHz. e. Set the Radio to CH14 (CTCSS Tone 100 Hz). f. Set AF generator output level to zero. g. Push PTT-key on Programming Interface. h. Adjust TX Modulation RV304 until the FM Deviation is 0.45+0.1kHz. 4, Tx Frequency Adjustment a. Set the Radio to CH4. b. Push PTT-key on Programming Interface. c. Adjust Tx Frequency RV303 until the Frequency is f0+/-0.1kHz. 5, Transmitter Power Adjustment. a, No tuning for the operation. Exhibit 10 APPLICANT: FCC ID NO. AXATR-391-A2 ERICSSON INC ALIGNMENT PROCEDURE 6, Rx VCO Adjustment a, Set the Radio to CH3. b, Monitor DC Voltage at test point TP301. c, Adjust Rx VCO RV302 to 6.0 +/- 0.1V. 7, Rx 2’nd Local Frequency Adjustment a, Set the Radio to CH3. b, Set Center frequency of Spectrum Analyzer to 81.745 MHz and Band width to 1 kHz. c, Monitor 2’nd Local frequency at test point TP202. d, Adjust 2’nd Local CV204 to 81.745 MHz +/- 100 Hz. 8, Rx Noise Squelch Tuning a. Monitor DC voltage at test point TP208. E Set the Radio to CH2. F Set RF generator frequency to CH2 in figure 1, deviation to 3 kHz and Tone to 1kHz. d. Set RF generator level until the Rx SINAD is 8+2dB at RX AUDIO. Adjust Noise Squelch RV201 until the DC voltage at TP210 is 0.75 volts. Exhibit 10 APPLICANT: FCC ID NO. AXATR-391-A2 ERICSSON INC CIRCUIT AND DEVICE DESCRIPTION (10) Oscillator and other Frequency Stabilizing Circuit Descriptions: The frequency reference is a self-contained quartz crystal oscillator (TCXO) module, operating 12.8MHz. The TCXO is compensated by internal temperature compensating circuit providing 1.5PPM stability from -30 °C to +60°C. (11) a. b. c. d. e. f. Circuit or devices employed for suppression of spurious radiation: The radio has metal cover and metal cabinet. Extensive use of discrete bypass capacitors in the Option and Remot e Control Connector of the radio reduces radiation from remote cables. Low pass harmonic filter follows power amplifier output. Internal shields surround synthesizer, power amplifier and System Control logic circuitry. In addition the Control Unit package is metallized to suppress microprocessor radiation. During acquisition of the synthesizer phase lock loop, the transmitter output is inhibited by an RF gate and the removal of DC voltage to the gain control stage of the RF power chain. (12) a. b. Circuit or Devices employed for limiting modulation: Reference is made to the schematic diagram XD00-TC-0099 in Exhibit 4. Instantaneous audio limiting is accomplished Audio IC (IC501). The Audio IC provides both limiting and Post-Limiting filtering. The Audio IC runs from a regulated supply voltage, which prevents deviation changes vs. changes in radio power supply voltage. Following the Limiter, a summing amplifier is used to add in any optional tone modulation, such as CTCSS and CDCSS modulation, which is also temperature and voltage stable. The output from the summing amplifier then passes through the post- limiting filter to a modulation level adjust liner attenuator (also contain IC501), which is in turn coupled to the FM modulated oscillators. The attenuator insures maximum deviation + 2.25KHz. Exhibit 10 APPLICANT: FCC ID NO. AXATR-391-A2 ERICSSON INC CIRCUIT AND DEVICE DESCRIPTIO (13) a. b. c. d. e. f. Circuit or devices employed for suppression of spurious radiation: The radio has metal cover and metal cabinet. Extensive use of discrete bypass capacitors in the Option and Remot e…

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Block Diagram of KMELCD Board Unit for FCC MA00-TD-0085 Schematic of KMELCD Board Unit for FCC MD00-TD-0085

AXATR-391-A2EXHIBIT 6ERICSSON INC. 1 SECTION 1 RF POWER OUTPUT 2.985 (A)The RF Power measured at the output terminals: AXATR-391-A2 6-25 Watts Method: The measurement was made per TIA/EIA-603 using the following equipment:: A 50 ohm load is attached to the output terminal through a directional coupler.. The power is measured on a HP436A power meter. AXATR-391-A2EXHIBIT 6ERICSSON INC. 2 SECTION 2 MODULATION CHARACTERISTICS Ref. Par. 2.987 (a, b, d) the frequency and amplitude response to audio inputs measured per TIA/ EIA 603 are shown on the following sheet 896-901 / 935-940 Mhz Section 2B Audio Frequency Response Section 2C Modulation Characteristics Equipment used was: Marconi Instruments Ltd. FM/AM Modulation Meter TF2300B Hewlett Packard Audio Signal Generator 204D Hewlett Packard Distortion Analyzer 333A At those modulation frequencies at which the transmitter is not capable of producing 30% of sys- tem deviation, audio response is calculated from measurement of input voltage producing a lesser deviation. AXATR-391-A2EXHIBIT 6ERICSSON INC. 3 AXATR-391-A2EXHIBIT 6ERICSSON INC. 4 AXATR-391-A2EXHIBIT 6ERICSSON INC. 5 AXATR-391-A2EXHIBIT 6ERICSSON INC. 6 AXATR-391-A2EXHIBIT 6ERICSSON INC. 7 SECTION 3 OCCUPIED BANDWIDTH Per 2.989 (c, 1) the measurements were made per TIA/EIA 603. 898.9995 Mhz SECTION 3 B1, B2. C1, C2 (50 & 150 kHz spans, Voice) SECTION 3 D1, D2 ( 50 & 150 kHz spans, Data) 938.00 MHz SECTION 3 H1,H2 ( 50 & 150 kHz spans, talkaround Voice) SECTION 3 I1,I2 ( 50 & 150 kHz spans, talkaround Data) AXATR-391-A2 EXHIBIT 6 ERICSSON INC. 8 SECTION 3 OCCUPIED BANDWIDTH Method of Measurement Per 2.989 (c,1) Data on Occupied Bandwidth is presented in the form of a spectrum analyzer plot which illustrates the transmitter sidebands. A plot is taken of the carrier sideband modulated with a 2500 Hz tone at a level 16 dB greater than that required to produce 50 percent modulation. (The spectrum analyzer grid indicates the reference level of the carrier unmodulated in all exhibits.) SECTION 3B,C,H Bn = 2M + 2DK where M = 3000 Hz Telephony D = 2000Hz K= 1(assumed) Bn = 10000 Therefore, Emission Designator are, 10K0F3E SECTION 3D & I Bn = 2(B/2) + 2DK where B = 9600 Hz Data, Digital Voice D = 2000 Hz K=1(assumed) Bn=13600 Therefore, Emission Designators are, 13K6F1D 13K6F1E AXATR-391-A2EXHIBIT 6ERICSSON INC. 9 AXATR-391-A2EXHIBIT 6ERICSSON INC. 10 AXATR-391-A2EXHIBIT 6ERICSSON INC. 11 AXATR-391-A2EXHIBIT 6ERICSSON INC. 12 AXATR-391-A2EXHIBIT 6ERICSSON INC. 13 AXATR-391-A2EXHIBIT 6ERICSSON INC. 14 AXATR-391-A2EXHIBIT 6ERICSSON INC. 15 AXATR-391-A2EXHIBIT 6ERICSSON INC. 16 AXATR-391-A2EXHIBIT 6ERICSSON INC. 17 AXATR-391-A2EXHIBIT 6ERICSSON INC. 18 AXATR-391-A2EXHIBIT 6ERICSSON INC. 19 SECTION 4 SPURIOUS EMISSIONS Reference 2.991 spurious emissions at the antenna terminals when properly loaded with an appro- priate artificial antenna were measured per TIA\EIA 603. Results are as shown in the following Sections Equipment used was: Hewlett Placard Spectrum Analyzer 140T Display, 8554-B-RF, 8552B-IF. Reference 2.993 field strength of spurious radiation was measured on our three meter range. The site and equipment are described in the site description and attenuation measurements for the Ericsson Inc. three meter radiation site #2 filed with the FCC in Columbia, Maryland, in Novem- ber of 1990. The measurement procedure is per TIA/EIA 603, but done on a three meter test site. Results are shown on the following exhibits *SAME AS FOR 25 OR 12.5 kHz modes. Tx Radiated Emissions Sections Page Frequency Mhz Power in Watts 20896.0125 25 20940.987525 Tx Conducted Emissions Sections Page Frequency Mhz Power in Watts 21896.0125 6 21896.012525 22940..9875 6 21940.987525 AXATR-391-A2EXHIBIT 6ERICSSON INC. 20 AXATR-391-A2EXHIBIT 6ERICSSON INC. 21 AXATR-391-A2EXHIBIT 6ERICSSON INC. 22 AXATR-391-A2EXHIBIT 6ERICSSON INC. 23 SECTION 5 FREQUENCY STABILITY Par. 2.995 (a,1) (b) (d, 1) variation of output frequency as a result of either temperature or voltage variation is reported in the graphs on the following sheets: (The battery is rated from 6 to 9 volts.) Exhibit 12B Carrier Frequency Vs Temperature Exhibit 12C Carrier Frequency Vs. Voltage The Equipment used is: Hewlett Packard QUARTZ Thermometer Model 2804A Takeda Counter TR5823AK Takeda Digital Multimeter TR6878 Tabai Temperature chamber PL-2G AXATR-391-A2EXHIBIT 6ERICSSON INC. 24 AXATR-391-A2EXHIBIT 6ERICSSON INC. 25