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Motorola GM-950 Manual

Motorola GM-950 Manual

Band specific information
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Chapter
5A
UHF (403-470MHz) ............................................................................. 5A.1-i
5B
VHF (136-174MHz) .............................................................................. 5B.1-i
5C
Midband (66-88MHz) ............................................................................ 5C.1-i
Band Specific Information
Chapter 5
Band Specific Information
Table of Contents
Table of Contents
Page
5-i

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  • Page 1 Table of Contents Chapter 5 Band Specific Information Table of Contents Chapter Page UHF (403-470MHz) ................5A.1-i VHF (136-174MHz) ................5B.1-i Midband (66-88MHz) ................5C.1-i Band Specific Information...
  • Page 2 Table of Contents 5-ii Band Specific Information...
  • Page 3 Table of Contents Chapter 5C 66-88MHz Specific Information Table of Contents Chapter 5C.1 Model Chart and Test Specifications 5C.2 Radio Tuning Procedure 5C.3 Theory of Operation 5C.4 PCB/Schematic Diagrams and Parts Lists 66-88MHz Specific Information 5C-i...
  • Page 4 Table of Contents 5C-ii 66-88MHz Specific Information...

  • Page 5: Table Of Contents

    Table of Contents Chapter 5C.1 Model Chart and Test Specifications Table of Contents Paragraph Page Overview..................... 1 Model Chart ....................1 Service Options ................... 2 Test Specifications ..................3 General ......................3 Transmitter....................3 Receiver....................... 4 Self-quieting Frequencies ................4 Model Chart and Test Specifications 5C.1-i...
  • Page 6 Table of Contents 5C.1-ii Model Chart and Test Specifications...

  • Page 7: Overview

    Overview Overview 5C.1 This chapter lists the Midband (66-88MHz) models and technical specifications available for the GM950 mobile radio. Model Chart GM950 66-88 MHz Midband X = Indicates one of each required Item Description GBN6147_ Packaging Kit GMN6151_ Hand Held Control Microphone N1 GCN6106_ Control Head Model N2 Non-Display GCN6107_...

  • Page 8: Service Options

    Model Chart Service Options GM950 66-88 MHz Midband X = Indicates one of each required Item Description ENUC1000AS GM950 MB 12.5kHz MD234AD ENUC1001AS GM950 MB 25kHz MD214AD ENUC1052AS GM950 MB 12.5kHz MD234AA ENUC1053AS GM950 MB 25kHz MD214AA ENUC1054AS GM950 MB 12.5kHz MD234AB ENUC1054AS GM950 MB 25kHz MD214AB ENUC1007AS...

  • Page 9: General

    Technical Specification Technical Specification General SPECIFICATION ITEM TYPICAL VALUE Frequency Range Midband: 66-88 MHz Channel Spacing 12.5 or 20/25 kHz ±5ppm Frequency Stability Power Supply 10.8 to 15.6V dc, negative earth Dimensions 44x168x160 mm (HxWxD) Weight 1030g Operational Temperature - 25°C to + 55°C Storage Temperature - 40°C to + 85°C Antenna Connection...

  • Page 10: Receiver

    Technical Specification Receiver SPECIFICATION ITEM TYPICAL VALUE Channel Spacing 12.5 or 20/25 kHz Sensitivity @ 12.5 kHz < 0.35uV (12dB SINAD) Sensitivity @ 25 kHz < 0.35uV (12dB SINAD) Intermodulation >65dB ETS; >70dB with Base Option Adjacent Channel Selectivity >60dB (12.5kHz); >70dB (20/25kHz) Spurious Rejection >70dB ETS Audio Distortion @ Rated Audio...
  • Page 11 Table of Contents Chapter 5C.2 Radio Tuning Procedure Table of Contents Paragraph Page Midband (66-88MHz) Tuning Procedure ........... 1 General ......................1 PA Bias Voltage................... 3 Battery Threshold ..................3 Transmitter Power ..................4 Reference Oscillator ..................4 Front-End Filter.................... 5 Rated Volume ....................
  • Page 12 Table of Contents 5C.2-ii Radio Tuning Procedure...

  • Page 13: Midband (66-88Mhz) Tuning Procedure

    Midband (66-88MHz) Tuning Procedure Midband (66-88MHz) Tuning Procedure 5C.2 General The recommended hardware platform is a 386 or 486 DX 33 PC (personal computer) with 8 MBytes RAM, MS-DOS™ 5.0, Windows™3.1, and RSS (Radio Service Software). These are required to align the radio.
  • Page 14 Midband (66-88MHz) Tuning Procedure CAUTION: DO NOT switch radios in the middle of any Service procedure. Always use the Program or Cancel key to close the tuning window before disconnecting the radio. Improper exits from the Service window may leave the radio in an improperly configured state and result in seriously degraded radio or system performance.

  • Page 15: Pa Bias Voltage

    Midband (66-88MHz) Tuning Procedure PA Bias Voltage Adjustment of the PA Bias is critical for proper radio operation. Improper adjustment will result in poor operation and may damage the PA FET device. For this reason, the PA bias must be set before the transmitter is keyed the first time.

  • Page 16: Transmitter Power

    Midband (66-88MHz) Tuning Procedure Transmitter Power The radio has two power level settings, a high power level setting, and a low power level setting. IMPORTANT: To set the transmitter power for customer applications use the Per Radio window under the Edit menu and set the “Power 1” and “Power 2” powers to the desired values.

  • Page 17: Front-End Filter

    Midband (66-88MHz) Tuning Procedure Table 2-2 Reference Oscillator Alignment. RF-Band Target ±150 Hz All bands Front-End Filter Alignment of the front-end pre-selector is normally not required on these radios. Only if the radio has poor receiver sensitivity or the pre-selector parts have been replaced the following procedure should be performed.

  • Page 18: Rated Volume

    Midband (66-88MHz) Tuning Procedure Rated Volume The rated volume softpot sets the maximum volume at normal test modulation. Set test box (GTF180) meter selection switch to the “AUDIO PA” position and the speaker load switch to the “MAXAR” position. Connect an AC voltmeter to the test box meter port. From the Service menu, select Rx Alignments.

  • Page 19: Transmit Modulation Balance (Compensation)

    Midband (66-88MHz) Tuning Procedure Transmit Modulation Balance (Compensation) Compensation alignment balances the modulation sensitivity of the VCO and reference modulation (synthesizer low frequency port) lines. Compensation algorithm is critical to the operation of signalling schemes that have very low frequency components (e.g. DPL) and could result in distorted waveforms if improperly adjusted.

  • Page 20: Tone (Select 5) Transmit Deviation

    Midband (66-88MHz) Tuning Procedure Click the Toggle PTT button to dekey the radio. Repeat steps 4 - 7 for the remaining test frequencies. Click the Program button to store the softpot values. Table 2-5 Transmitter Deviation. Channel Spacing Deviation 12.5 kHz 2.2-2.3 kHz 20 kHz 3.4-3.6 kHz...

  • Page 21: Dtmf Transmit Deviation

    Midband (66-88MHz) Tuning Procedure 1.12 DTMF Transmit Deviation The DTMF Deviation Softpot is used to tune the DTMF deviation. Tuning is performed at one frequency. The radio generates the required tones while the tuning window is open. Values for other frequencies are calculated by the radio software.
  • Page 22 Midband (66-88MHz) Tuning Procedure 5C.2-10 Radio Tuning Procedure...
  • Page 23 Table of Contents Chapter 5C.3 Theory of Operation Table of Contents Paragraph Page Overview..................... 1 Open Controller..................1 General ......................1 Voltage Regulators ..................1 Electronic On/Off ..................2 Emergency....................3 Mechanical On/Off ..................3 Ignition ......................3 Hook RSS ....................3 Microprocessor Clock Synthesizer ..............

  • Page 24: Paragraph Page

    Table of Contents Paragraph Page TX Secure Audio (optional) ............... 11 Transmit Signalling Circuits ..............12 Sub-audible Data (PL/DPL) ............... 12 High Speed Data ..................13 Dual Tone Multiple Frequency (DTMF) Data..........13 Receive Audio Circuits................14 Squelch Detect ..................14 Audio Processing and Digital Volume Control ...........

  • Page 25: Overview

    It consists of a microprocessor, support memory, support logic, signal MUX ICs, the On/Off circuit, and general purpose Input/Output circuitry. The controller uses the Motorola 68HC11K1 microprocessor (U0101). In addition to the microprocessor, the controller has 3 external memory devices. The 3 memory devices consist of a 32 Kbyte SRAM (U0103), a 256 Kbyte FLASH EEPROM (U0102), and a 4kbyte EEPROM (U0104).

  • Page 26: Electronic On/Off

    Open Controller Regulator U0601 is used to generate the 9.3 volts required by some audio circuits, the RF circuitry and power control circuitry. Input and output capacitors (C0601-C0603 and C0604/C0605) are used to reduce high frequency noise. R0602/R0603 set the output voltage of the regulator. If the voltage at pin 1 is greater than 1.3 volts the regulator output decreases and if the voltage is less than 1.3 volts the regulator output increases.

  • Page 27: Emergency

    Open Controller Emergency The emergency switch (J0400-9), when engaged, grounds the base of Q0441 and pulls the line EMERGENCY CONTROL to low via D0441. EMER IGN SENSE is pulled high by R0441. When the emergency switch is released the base of Q0441 is pulled high by R0442. This causes the collector of transistor Q0441 to go low (0.2V), thereby setting the EMER IGN SENSE line to low.

  • Page 28: Microprocessor Clock Synthesizer

    Open Controller To start SBEP communication this voltage must be above 6V. This condition generates a µP interrupt via VR0102, Q0105, Q0104, Q0106 and enables the BUS+ line for communication via Q0122, Q0121. Microprocessor Clock Synthesizer The clock source for the microprocessor system is generated by the ASFIC (U0201). Upon power- up the synthesizer U5701 (UHF) / U3701 (VHF) / U2701 (MB) generates a 2.1 MHz waveform that is routed from the RF section (via C0202) to the ASFIC (on U0201-E1) For the main board controller the ASFIC uses 2.1MHz as a reference input clock signal for its internal synthesizer.

  • Page 29: Speb Serial Interface

    Open Controller When the µP needs to program any of these IC’s it brings the chip select line for that IC to a logic 0 and then sends the proper data and clock signals. The amount of data sent to the various IC’s are different, for example the FRAC-N can receive up to 21 bytes (168 bits) while the DAC can receive up to 3 bytes (24 bits).

  • Page 30: General Purpose Input/Output

    Open Controller 2.11 General Purpose Input/Output The Controller provides one general purpose line (GP I/O) available on the accessory connector J0400-12 to interface to external options. The software and the hardware configuration of the radio model defines the function of the port. The port uses an output transistor (Q0432) controlled by µP via ASFIC port GCB3 (pin B3) and an input transistor (Q0431) read by µP port PA7 (pin 4).
  • Page 31 Open Controller The K1µP provides an address bus of 16 address lines (A0-A15), and a data bus of 8 data lines (D0- D7). There are also three control lines; CSPROG (U0101-29) to chip select U0102-30 (FLASH EEPROM), CSGP2 (U0101-28) to chip select U0103-20 (SRAM) and PG7_R_W to select whether to read or to write.

  • Page 32: Flash Electronically Erasable Programmable Memory (Flash Eeprom)

    Open Controller 2.13 FLASH Electronically Erasable Programmable Memory (FLASH EEPROM) The 256 KByte FLASH EEPROM (U0102) contains the radio operating software. This software is common to all open architecture radios within a given model type. This is, as opposed to the codeplug information stored in EEPROM (U0104) which could be different from one user to another in the same company.

  • Page 33: Static Random Access Memory (Sram)

    General 2.15 Static Random Access Memory (SRAM) The SRAM (U0103) contains temporary radio calculations or parameters that can change very frequently, and which are generated and stored by the software during its normal operation. The information is lost when the radio is turned off. The device allows an unlimited number of write cycles.

  • Page 34: Transmit Audio Circuits

    Transmit Audio Circuits Transmit Audio Circuits Refer to Figure 3.1 for reference for the following sections. Mic Input Path The radio supports two distinct microphone paths known as internal (from Control Head) and external mic (from accessory connector J0400-2) and an auxiliary path (FLAT TX AUDIO). The microphones used for the radio require a DC biasing voltage provided by a resistive network.

  • Page 35: External Mic Path

    Transmit Audio Circuits External Mic Path The external microphone signal enters the radio on accessory connector J0400 pin 2 and is routed to the ASFIC (U0201-A7) through resistor R0414, capacitor C0413 and line EXT MIC, with DC bias provided by R0415 / R0416. R0415 and C0417 provide a 1kΩ AC path to ground that sets the input impedance for the microphone and determines the gain based on the emitter resistor in the microphone’s amplifier circuit.

  • Page 36: Transmit Signalling Circuits

    Transmit Signalling Circuits Transmit Signalling Circuits Refer to Figure 3.2 for reference for the following sections. From a hardware point of view, there are three types of signalling: Sub-audible data (PL/DPL/Connect Tone) that gets summed with transmit voice or signalling, DTMF data for telephone communication in trunked and conventional systems, and Audible signalling including Select 5, MPT-1327, MDC, High speed Trunking.

  • Page 37: High Speed Data

    Transmit Signalling Circuits High Speed Data High speed data refers to the 3600 baud data waveforms, known as Inbound Signalling Words (ISWs) used in a trunking system for high speed communication between the central controller and the radio. To generate an ISW, the µP first programs the ASFIC (U0201) to the proper filter and gain settings.

  • Page 38: Receive Audio Circuits

    Receive Audio Circuits Receive Audio Circuits Refer to Figure 3.3 for reference for the following sections. ACCESSORY CONNECTOR FLT RX AUDIO J0400 AUDIO SPKR + EXTERNAL SPKR - U0401 SPEAKER SPKR+ SPKR- CONTROL HEAD CONNECTOR ATTEN. INTERNAL SPEAKER J0101 HANDSET AUDIO UNIV IO RX AUD OUT...

  • Page 39: Audio Processing And Digital Volume Control

    Receive Audio Circuits CH ACT is routed to the µP pin 25 (pin 40 from version 0102726B09_Cntl on) while SQ DET adds up with LOCK DET, weighted by resistors R0113, R0114, and is routed to one of the µP´s ADC inputs U0101-43.

  • Page 40: Handset Audio

    Receive Audio Circuits The audio PA is enabled via AUDIO PA ENABLE signal from the ASFIC (U0201-B5). When the base of Q0401 is low, the transistor is off and U0401-8 is high, using pull up resistor R0406, and the Audio PA is ON.

  • Page 41: Receive Signalling Circuits

    Receive Signalling Circuits Receive Signalling Circuits Refer to Figure 3.4 for reference for the following sections. LOW SPEED HIGH SPEED CLOCK CLOCK DATA FILTER LIMITER AND DEEMPHASIS MICRO CONTROLLER ASFIC DET AUDIO U0201 U0101 DISCRIMINATOR AUDIO FROM RF SECTION (IF IC) FILTER LIMITER LOW SPEED...
  • Page 42 Receive Signalling Circuits The allowable internal alert tones are 304, 608, 911, and 1823Hz. In this case a code contained within the SPI BUS load to the ASFIC sets up the path and determines the tone frequency, and at what volume level to generate the tone. (It does not have to be related to the voice volume setting). For external alert tones, the µP can generate any tone within the 100-3000Hz audio band.

  • Page 43: Midband (66-88Mhz) Specific Circuit Description

    5C.3 Midband SPECIFIC CIRCUIT DESCRIPTION Receiver Front-End The receiver is able to cover the MB range from 66 to 88 MHz. It consists of four major blocks: front- end, mixer, first IF section and IF IC. Antenna signal pre-selection is performed by two varactor tuned bandpass filters.

  • Page 44: If Ic (U2201)

    Transmitter Power Amplifier (PA) 5-25W IF IC (U2201) The first IF signal from the crystal filters feeds the IF IC (U2201) at pin 6. Within the IF IC the 21.4MHz first IF signal mixes with the second local oscillator (LO) at 20.945MHz to the second IF at 455 kHz.

  • Page 45: Pa Stages

    Transmitter Power Amplifier (PA) 5-25W PA Stages The following stage uses an enhancement mode N-Channel MOS FET device (Q2521) and requires a positive gate bias and a quiescent current flow for proper operation. The voltage of the line BIAS VLTG is set in transmit mode by a Digital to Analogue (D/A) converter (U0731-4) and fed to the gate of Q2521 via the resistive network R2613, R2614, R2615.

  • Page 46: Harmonic Filter

    Transmitter Power Amplifier (PA) 5-25W Harmonic Filter The transmitter signal from the antenna switch is channelled through the harmonic filter to the antenna connector J2501.The harmonic filter is formed by inductors L2551, L2552, and capacitors C2551 through to C2554 This network forms a low-pass filter to attenuate harmonic energy of the transmitter to specifications level.

  • Page 47: Frequency Synthesis

    Frequency Synthesis Rise and fall time of the output power during transmitter keying and dekeying is controlled by the comparator formed by opamp U0701-3. During normal transmitter operation the voltage at U701-3 pin 13 is higher than the voltage at pin 12 causing the output at pin 14 being low and switching off transistor Q0711.

  • Page 48: Voltage Controlled Oscillator (Vco)

    Frequency Synthesis In order to generate a high voltage to supply the phase detector (charge pump) output stage at pin VCP (U2701-32), a voltage of 13 VDC is being generated by the positive voltage multiplier circuitry (D2701-1-3, C2716, C2717). This voltage multiplier is basically a diode capacitor network driven by two (1.05 MHz) 180 degrees out of phase signals (U2701-9 and -10).
  • Page 49 Frequency Synthesis The output signal of the phase detector is a pulsed DC signal which is routed to the charge pump. The charge pump outputs a current at pin 29 (I OUT of U2701). The loop filter (which consists of R2715 - R2718, C2723 - C2725, C2727, C2735) transforms this current into a voltage that is applied to the varactor diodes D2732, D2733 (TX), D2751, D2752 (RX) and alters the output frequency of the TX VCO (Q2741) and RX VCO (Q2751).
  • Page 50 Frequency Synthesis 5C.3-26 Theory of Operation...
  • Page 51 Table of Contents Chapter 5C.4 PCB/Schematic Diagrams and Parts Lists Table of Contents Description Page Midband (66-88MHz) PCB 8486037B03_T1 PCB Layout Component Side ..........1 PCB Layout Solder Side .
  • Page 52 Table of Contents Paragraph Page Power Amplifier 5-25W Schematic Diagram....... . . 25 Parts List.

  • Page 53: Pcb Layout Component Side

    Midband (66-88MHz) Main Board Top Side PCB No. 8486037B03_T1 Associated Schematics J0101 Q0141 Q0123 Q0121 C2238 E2701 R2222 C2229 R2703 R0126 R0130 C2726 R2724 Midband PCB : 8486037B03_T1 Page C0121 R2723 R0128 R0204 R0205 VR0102 C0243 C0223 C0222 C0228 C2226 R2705 Controller 5C.4-3...

  • Page 54: Pcb Layout Solder Side

    Midband (66-88MHz) Main Board Bottom Side PCB No. 8486037B03_T1 E2702 R0220 R2216 R2225 E2703 C2237 C2233 C0209 J0103 VR0161 C0224 U2701 C0210 C2720 C2239 Y2701 C0136 C2236 U2201 D0200 C2715 C2708 C0227 R2717 C2716 C2710 C0200 R0200 D2701 R2704 C2703 L0200 Q0104 Q0106...

  • Page 55: Open Controller Schematic Diagram 1 Of 2

    Midband (66-88MHz) Controller Schematic Diagram Midband (66-88MHz) Controller Schematic Diagram 1 of 2 Diagrams and Parts Lists 5C.4-3...
  • Page 56 Midband (66-88MHz) Controller Schematic Diagram Controller Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Parts List Part No. Part No. Part No. C0207 2113743F08 220nF 5% 50V Y5V L0131 2462587Q40 COIL CHIP 270nH R0118 0662057A89 47k 1/16W 5% Circuit...

  • Page 57: Open Controller_Io Schematic Diagram 2 Of 2

    Midband (66-88MHz) Controller_IO Schematic Diagram Midband (66-88MHz) Controller_IO Schematic Diagram 2 of 2 Diagrams and Parts Lists 5C.4-5...

  • Page 58: Parts List

    Midband (66-88MHz) Controller_IO Schematic Diagram Controller_IO Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Parts List Part No. Part No. Part No. R0209 0662057A73 10k 1/16W 5% L0402 2484657R01 Ferrite Bead R0442 0662057A73 10k 1/16W 5% Circuit Motorola Description Part No.

  • Page 59: Supply Voltage Schematic Diagram

    Midband (66-88MHz) Supply Voltage Schematic Diagram USW_+5V D0621 FLT_A+_8 R0621 USW_+5V_CL FLT_A+ 2.2K C0621 VR0621 C0622 470pF 470pF 5.1V 47uF 47uF U0601 R0606 LM2941T 9V3_1_8 9V3_8 VOUT D0631 R0631 U0631 ON_OFF* R0601 R0602 LP2951CM LP2951CM 7.5K C0601 C0602 C0603 INPUT OUTPUT C0604 C0605...

  • Page 60: Parts List

    Midband (66-88MHz) Supply Voltage Schematic Diagram Supply Voltage Circuit Motorola Description Parts List Part No. R0614 0662057A49 1k 1/16W 5% Circuit Motorola Description Part No. R0615 0662057A73 10k 1/16W 5% R0616 0662057A73 10k 1/16W 5% C0601 2113741F17 470pF 50V C0602...

  • Page 61: Power Control Schematic Diagram

    Midband (66-88MHz) Power Control Schematic Diagram Midband (66-88MHz) Power Control Schematic Diagram Diagrams and Parts Lists 5C.4-9...

  • Page 62: Parts List

    Midband (66-88MHz) Power Control Schematic Diagram Power Control Circuit Motorola Description Parts List Part No. R0714 0662057A81 22k 1/16W 5% Circuit Motorola Description Part No. R0715 0662057A81 22k 1/16W 5% C0701 2113740F51 100pF 5% 50V R0716 0662057B16 560k 1/16W 5%...

  • Page 63: Power Amplifier 5-25W Schematic Diagram

    Midband (66-88MHz) Power Amplifier 5-25W Schematic Diagram Power Amplifier Midband (66-88MHz) Power Amplifier 5-25W Schematic Diagram Diagrams and Parts Lists 5C.4-11...

  • Page 64: Parts List

    Midband (66-88MHz) Power Amplifier 5-25W Schematic Diagram Power Amplifier 5-25W Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Parts List Part No. Part No. Part No. C2622 2113741A57 33nF 50V L2501 2462587X46 IND CHIP LO-PRO 27.0 R2527 0680194M01 10 1W 5%...

  • Page 65: Synthesizer Schematic Diagram

    Midband (66-88MHz) Synthesizer Schematic Diagram Note 1 Note 1 Note 1 Not Used Synthesizer Midband (66-88MHz) Synthesizer Schematic Diagram Diagrams and Parts Lists 5C.4-13...

  • Page 66: Parts List

    Midband (66-88MHz) Synthesizer Schematic Diagram Synthesizer Circuit Motorola Description Parts List Part No. R2711 0662057A25 100 1/16W 5% Circuit Motorola Description Part No. R2712 0662057A59 2k7 1/16W 5% C2701 2113740F51 100pF 5% 50V R2713 0662057A59 2k7 1/16W 5% (12.5kHz) C2702...

  • Page 67: Voltage Controlled Oscillator Schematic Diagram

    Midband (66-88MHz) Voltage Controlled Oscillator Schematic Diagram Midband (66-88MHz) Voltage Controlled Oscillator Schematic Diagram Diagrams and Parts Lists 5C.4-15...

  • Page 68: Parts List

    Midband (66-88MHz) Voltage Controlled Oscillator Schematic Diagram Voltage Controlled Oscillator Circuit Motorola Circuit Motorola Circuit Motorola Parts List Description Description Description Part No. Part No. Part No. C2776 2113740F47 68pF 5% 50V L2750 2462587T30 R2763 0662057A25 100 1/16W 5% Circuit...

  • Page 69: Rx-Fe Schematic Diagram

    Midband (66-88MHz) RX-FE Schematic Diagram Midband (66-88MHz) RX-FE Schematic Diagram Diagrams and Parts Lists 5C.4-17...

  • Page 70: Parts List

    Midband (66-88MHz) RX-FE Schematic Diagram RX-FE Circuit Motorola Circuit Motorola Description Description Parts List Part No. Part No. C2334 2113740F43 47pF 5% 50V R2317 0662057A29 150 1/16W 5% Circuit Motorola Description Part No. C2335 2113740F51 100pF 5% 50V R2318 0662057A13...

  • Page 71: Rx-If Schematic Diagram

    Midband (66-88MHz) RX-IF Schematic Diagram Note 1 Note 1 Note 1 Note 1 Note 1 Note 1 Note 1 Note 1 Note 1 Note 1 Note 1 Note 1 Front End Midband (66-88MHz) RX-IF Schematic Diagram Diagrams and Parts Lists 5C.4-19...

  • Page 72: Parts List

    Midband (66-88MHz) RX-IF Schematic Diagram RX-IF Circuit Motorola Circuit Motorola Description Description Parts List Part No. Part No. C2230 2113741F49 10nF 50V R2224 0662057A76 13k 1/16W 5% Circuit Motorola Description Part No. C2231 2311049A07 TANT CP 1uF 10% 16V R2225 0662057A25 100 1/16W 5% (12.5kHz)

  • Page 73: Pcb Layout Component Side

    Midband (66-88MHz) Main Board Top Side PCB No. 8486037B04_T2 J0101 Associated Schematics Q0141 Q0123 Q0121 C2238 E2701 R2222 C2229 R2703 R0126 R0130 C2726 R2724 Midband PCB : 8486037B04_T2 Page C0121 R2723 R0128 R0204 R0205 VR0102 C0243 C0223 C0222 C0228 C2226 R2705 R0206 Y2702...

  • Page 74: Pcb Layout Solder Side

    Midband (66-88MHz) Main Board Bottom Side PCB No. 8486037B04_T2 E2702 R0220 R2216 R2225 E2703 C2237 C2233 C0209 J0103 VR0161 C0224 U2701 C0210 C2720 C2239 Y2701 C0136 C2236 U2201 D0200 C2715 C2708 C0227 R2717 C2716 C2710 R0200 C0200 D2701 R2704 C2703 L0200 Q0104 Q0106...

  • Page 75: Power Control Schematic Diagram

    Midband (66-88MHz) Power Control Schematic Diagram VAG_7 (CNTL) C0705 C0711 R0705 R0712 .0047uF R0702 39000pF PWR_DETECT_7 R0701 (PA) PWR_DETECT R0704 U0701-2 PWR_CNTL_7 U0701-4 R0711 PWR_CNTL (PA) 100K C0702 MC3403 C0701 MC3403 100pF 100pF C0713 100pF C0712 R0716 R0717 R0703 43pF 560K 3,3K R0714...

  • Page 76: Parts List

    Midband (66-88MHz) Power Control Schematic Diagram Power Control Circuit Motorola Description Parts List Part No. R0712 0662057A37 330 1/16W 5% Circuit Motorola Description Part No. R0713 0662057A61 3k3 1/16W 5% C0701 2113740F51 100pF 5% 50V R0714 0662057A81 22k 1/16W 5%...

  • Page 77: Power Amplifier 5-25W Schematic Diagram

    Midband (66-88MHz) Power Amplifier 5-25W Schematic Diagram Power Amplifier Midband (66-88MHz) Power Amplifier 5-25W Schematic Diagram Diagrams and Parts Lists 5C.4-25...

  • Page 78: Parts List

    Midband (66-88MHz) Power Amplifier 5-25W Schematic Diagram Power Amplifier 5-25W Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Parts List Part No. Part No. Part No. C2624 2113743A23 220nF 16V L2525 2460591A11 SQUARE COIL 7.66nH 3T R2611 0680149M02 THERMISTOR CHIP 100K...

  • Page 79: Synthesizer Schematic Diagram

    Midband (66-88MHz) Synthesizer Schematic Diagram Note 1 Note 1 Note 1 Not Used Synthesizer Midband (66-88MHz) Synthesizer Schematic Diagram Diagrams and Parts Lists 5C.4-27...

  • Page 80: Parts List

    Midband (66-88MHz) Synthesizer Schematic Diagram Synthesizer Circuit Motorola Description Parts List Part No. R2712 0662057A59 2k7 1/16W 5% Circuit Motorola Description Part No. R2713 0662057A59 2k7 1/16W 5% (12.5kHz) C2701 2113740F51 100pF 5% 50V R2714 0662057B02 150k 1/16W C2702 2113741F13...

  • Page 81: Rx-If Schematic Diagram

    Midband (66-88MHz) RX-IF Schematic Diagram Note 1 Note 1 Note 1 Note 1 Note 1 Note 1 Note 1 Note 1 Note 1 Note 1 Note 1 Note 1 Note 1 Midband (66-88MHz) RX-IF Schematic Diagram Diagrams and Parts Lists 5C.4-29...

  • Page 82: Parts List

    Midband (66-88MHz) RX-IF Schematic Diagram RX-IF Circuit Motorola Circuit Motorola Description Description Parts List Part No. Part No. C2230 2113741F49 10nF 50V R2225 0662057A25 100 1/16W 5% (12.5kHz) Circuit Motorola Description Part No. C2231 2311049A07 TANT CP 1uF 10% 16V...

  • Page 83: Pcb Layout Component Side

    Midband (66-88MHz) Main Board Top Side PCB No. 8486066B01_T1 R0241 R0240 Associated Schematics J0101 R2222 Q0141 Q0123 Q0121 C2238 E2701 R2703 R2223 R2724 C2726 C2229 R0126 R0130 C2801 C0121 C2230 R0142 Midband PCB : 8486066B01_T1 Page VR0102 C2707 Q0124 R2723 C0232 C2226 R0128...

  • Page 84: Pcb Layout Solder Side

    Midband (66-88MHz) Main Board Bottom Side PCB No. 8486066B01_T1 C0141 R2225 R0220 R2216 C2718 E2702 R0161 E2703 TP3703 C0242 C0204 C2233 C2237 C2231 D0200 J0103 VR0161 C2224 U2701 C0200 C2720 R0200 C2239 Y2701 C0210 C2216 C0136 C0224 TP0133 C2236 U2201 C0228 C0203 C2715...

  • Page 85: Open Controller Schematic Diagram 1 Of 3

    Midband (66-88MHz) Controller Schematic Diagram CHT_ENABLE RESET AN(0:7) K9V1_ENABLE_5 AN(0:7) EMER_IGN_SENSE K9V1_ENABLE BATTERY_VOLTAGE PA_ENABLE_5 RSSI C0171 PA_ENABLE .1uF SQDET ADAPT_5 R0114 U0171 ADAPT PH(0:7) PH(0:7) PH(0:7) LOCK_DET_5 TE85L R0113 TC7S08F C0141 LOCK_DET 470pF R0171 LCD_CE C0100 IN_OUT* 470pF LED_CHT_CE CONT U0172-1 PG7_RW OUT_IN*...

  • Page 86: Parts List

    Midband (66-88MHz) Controller Schematic Diagram Controller Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Parts List Part No. Part No. Part No. C0159 2113741F17 CAP CHIP 470pF 50V C0235 2113743A19 CAP CHIP 100nF 16V C0442 2113741F17 CAP CHIP 470pF 50V...

  • Page 87: Open Controller_Audio Schematic Diagram 2 Of 3

    Midband (66-88MHz) Controller_Audio Schematic Diagram VAG_5 U0251-1 R0251 MC33072 PD(0:4) 47.5K PA(0:7) C0253 RSSI_5 R0252 C0252 RSSI RSSI ASFIC_CE 47.5K 10uF U0202-3 C0203 MC3403 470pF R0240 R0209 R0210 RSSI_BUF R0241 J0103-7 R0208 J0103-8 R0236 C0235 J0103-6 .100uF R0235 C0231 J0103-4 U0251-2 MC33072 TP0200...
  • Page 88 Midband (66-88MHz) Controller_Audio Schematic Diagram Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. Q0431 4880048M01 NPN DIG 47k/47k R0128 0662057A73 10k 1/16W 5% R0221 0662057B47 0 1/16W R0425...

  • Page 89: Open Controller_Io Schematic Diagram 3 Of 3

    Midband (66-88MHz) Controller_IO Schematic Diagram FLT_A+ R0441 FLT_A+ FLT_A+ FLT_A+ 4.7K R0442 Q0481 SW_B+ SW_B+ R0440 EMER_IGN_SENSE 3.3K SW_FLT_A+ Q0441 C0441 R0481 R0443 470pF Q0482 D0481 R0482 VR0441 C0442 470pF D0441 EMERGENCY_CONTROL D0482 R0451 R0483 IGNITION_CONTROL R0449 R0450 4.7K 1.5K R0432 R0452 C0451...
  • Page 90 Midband (66-88MHz) Controller_IO Schematic Diagram Circuit Motorola Description Part No. VR0412 4813830A40 SOC23 AUTO SDN VR0415 4813830A27 14V 5% 225mW VR0416 4813830A27 14V 5% 225mW VR0420 4813830A15 5.6V 5% 225mW VR0423 4813830A15 5.6V 5% 225mW VR0425 4813830A15 5.6V 5% 225mW...

  • Page 91: Supply Voltage Schematic Diagram

    Midband (66-88MHz) Supply Voltage Schematic Diagram USW_+5V D0621 FLT_A+_8 R0621 USW_+5V_CL FLT_A+ 2.2K VR0621 C0621 C0622 5.1V 470pF 470pF 47uF 47uF U0601 LM2941T R0606 9V3_1_8 9V3_8 VOUT R0601 D0631 R0631 U0631 ON_OFF* LP2951CM LP2951CM C0604 C0605 R0602 .1uF 7.5K 7.5K 33uF C0601 C0602...

  • Page 92: Parts List

    Midband (66-88MHz) Supply Voltage Schematic Diagram Supply Voltage Circuit Motorola Description Parts List Part No. R0642 0662057A73 10k 1/16W 5% Circuit Motorola Description Part No. U0601 5105625U25 IC 9.3V REG 2941 U0631 5105469E65 IC VLTG REGLTR LP2951C C0601 2113741F17 470pF 50V...

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