Motorola GM950 Manual Download Page 73

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Midband (66-88MHz) Main Board Top Side PCB No. 8486037B04_T2

Diagrams and Parts Lists

5C.4-21

Midband (66-88MHz) Main Board Top Side

PCB No. 8486037B04_T2

C0100

C0104

C0105

C0106

C0107

C01

C0111

C0112

C01

C0114

C0121

C0131

C0132

C0133

C0134

C0135

C0146

C0147

C0151

C0201

C0202

C0205

C0206

C0207

C0208

C021

C0212

C0221

C0222

C0223

C0225

C0226

C0228

C0229

C0230

C0231

C0232

C0233

C0234

C0235

C0243

C0251

C0252

C0253

C0254

C0401

C0402

C0403

C0404

C0405

C0406

C0407

C0408

C0409

C0410

C0418

C0421

C0425

C0426

C0431

C0451

C0613

C0622

C0631

C0633

C0641

C0701

C0713

C0721

C0731

C0732

C0742

C2201

C2212

C2213

C2214

C2217

C2226

C2229

C2230

C2235

C2238

C2240

C2241

C2301

C2302

C2304

C2305

C2306

C2307

C2308

C2309

C2310

C2311

C2312

C2313

C2314

C2315

C2316

C2317

C2318

C2319

C2320

C2321

C2323

C2324

C2325

C2326

C2327

C2328

C2329

C2330

C2331

C2332

C2333

C2335

C2336

C2337

C2501

C251

C2512

C2514

C2521

C2522

C2523

C2524

C2525

C2526

C2527

C2530

C2531

C2532

C2533

C2534

C2551

C2552

C2553

C2602

C2621

C2622

C2623

C2624

C2632

C2635

C2636

C2637

C2638

C2639

C2640

C2641

C2642

C2644C2647

C2648

C2651

C2652

C2653

C2654

C2701

C2702

C2704

C2706

C2707

C2709

C2713

C2724

C2726

C2727

C2731

C2732

C2733

C2734

C2735

C2736

C2737

C2738

C2739

C2740

C2741

C2744

C2745

C2751

C2752

C2753

C2754

C2755

C2756

C2757

C2758

C2761

C2762

C2763

C2764

C2765

C2766

C2801

C2802

C2803

D0101

D0102

D0631

D0731

D0732

D0733

D2202

D2301

D2303

D2304

D2331

D2551

D2651

D2702

D2731

D2732

D2733

D2739

D2751

D2752

D2754

E2301

E2701

E2731

FL2201

FL2202

FL2203

J0101

J0400

J2501

J2601

L0132

L0401

L0402

L2201

L2206

L2302

L2330

L2331

L2333

L2334

L2501

L2523

L2524

L2525

L2531

L2532

L2533

L2550

L2551

L2552

L2553

L2621 L2622

L2631

L2641

L2651

L2652

L2731

L2732

L2733

L2734

L2741

L2750

L2751

L2752

L2753

L2754

L2761

Q0101

Q0102

Q0103

Q0121

Q0123

Q0124

Q0125

Q0141

Q0401

Q0450

Q0731

Q0741

Q0742

Q2301

Q2511

Q2641

Q2642

Q2643

Q2741

Q2742

Q2751

Q2752

Q2760

R0104

R0105

R0106

R0108

R01

111

R0112

R01

R0116

R01

R0120

R0121

R0122

R0123

R0124

R0125

R0126

R0127

R0128

R0129

R0130

R0131

R0132

R0133

R0134

R0135

R0136

R0137

R0138

R0139

R0140

R0141

R0142

R0143

R0144

R0145

R0146

R0147

R0201
R0202

R0203

R0204 R0205

R0206

R0207

R0208

R0209

R0210

R0221

R0222

R0223

R0224

R0225

R0231

R0232

R0233

R0235

R0236

R0251

R0252

R0401

R0402

R0404

R0405

R0406

R0407

R0417

R0420

R0423

R0424

R0449

R0450

R0451

R0452

R0601

R0604

R0605

R0631

R0632

R0641

R0642

R0715

R0720

R0721

R0731

R0732

R0733

R0735

R0737

R0741

R0742

R2206

R2211

R2212

R2217

R2221

R2222

R2223

R2301

R2302

R2303

R2304

R2305

R2306

R2307

R2308

R2309

R2313

R2314

R2315

R2321

R2501

R2502

R2511

R2513

R2525

R2526

R2527

R2601

R2602

R2603

R2604

R2615

R2641

R2642

R2643

R2644

R2645

R2646

R2649

R2701

R2702

R2703

R2705

R2709

R2723

R2724

R2731

R2739

R2741

R2742

R2743

R2751

R2752

R2753

R2754

R2758

R2760

R2761

R2762

R2763

R2765

R2766

R2767

R2769

R2801

SH2501

T2301

T2302

U0101

U0103

U0104

U0105

U0106

U0107

U0201

U0202

U0251

U0401

U0601

U0631

U0731

U2801

VR0101

VR0102

VR0402

VR0410

VR0421

VR0425

VR0426

VR0431

VR0451

VR0641

Y2201

Y2202

Y2211

Y2702

Component Side 8486037B04-72 GEPD5500-1

Associated Schematics

Midband PCB : 8486037B04_T2

Page

Controller
Controller_IO

5C.4-3
5C.4-5

Supply Voltage

5C.4-7

Power Control

5C.4-23

Power Amplifier

5C.4-25

Synthesizer

5C.4-27

Voltage Controlled Oscillator

5C.4-15

RX-FE

5C.4-17

RX-IF

5C.4-29

Summary of Contents for GM950

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

Page 2: ...Table of Contents 5 ii Band Specific Information ...

Page 3: ...n 5C i Chapter 5C 66 88MHz Specific Information Table of Contents 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 ...

Page 4: ...Table of Contents 5C ii 66 88MHz Specific Information ...

Page 5: ... 5C 1 Model Chart and Test Specifications Table of Contents Table of Contents Paragraph Page 1 0 Overview 1 2 0 Model Chart 1 2 1 Service Options 2 3 0 Test Specifications 3 3 1 General 3 3 2 Transmitter 3 3 3 Receiver 4 3 4 Self quieting Frequencies 4 ...

Page 6: ...Table of Contents 5C 1 ii Model Chart and Test Specifications ...

Page 7: ... M08FHE4AN2_N M08FHF4AN3_N M08FHH4AN4_N M08FHF6AN1_N M08FHE6AN2_N M08FHF6AN3_N M08FHH6AN4_N Item Description X X X X X X X X GBN6147_ Packaging Kit X X GMN6151_ Hand Held Control Microphone N1 X X GCN6106_ Control Head Model N2 Non Display X X GCN6107_ Control Head Model N3 Display X X GCN6108_ Control Head Model N4 Keypad Display X X X X X X X X GLN7324_ Low Profile Trunnion Kit X X X X X X X X G...

Page 8: ...50 66 88MHz 20 25 kHz 25W KD GM950 66 88 MHz Midband X Indicates one of each required Model M08FHF4AN1_N M08FHE4AN2_N M08FHF4AN3_N M08FHH4AN4_N M08FHF6AN1_N M08FHE6AN2_N M08FHF6AN3_N M08FHH6AN4_N Item Description X ENUC1000AS GM950 MB 12 5kHz MD234AD X ENUC1001AS GM950 MB 25kHz MD214AD X ENUC1052AS GM950 MB 12 5kHz MD234AA X ENUC1053AS GM950 MB 25kHz MD214AA X ENUC1054AS GM950 MB 12 5kHz MD234AB X...

Page 9: ...ronmental Mechanical Electrical Vibration IEC 68 2 27 and Shock IEC 28 2 6 European Dust Water protection IP54 ETS300 086 RF Specifications ETS300 113 Cyclic Keying Requirements ETS300 279 EMC Requirements ETS300 219 Signalling SPECIFICATION ITEM TYPICAL VALUE Channel Spacing 12 5 or 20 25 kHz Output Power 5 25W Modulation Limiting 2 5kHz 12 5kHz 4kHz 20kHz 5kHz 25kHz FM hum noise CCITT 40dB 12 5k...

Page 10: ...and 84MHz 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 ETS Spurious Rejection 70dB ETS Audio Distortion Rated Audio 5 Hum and Noise CCITT 40dB 12 5kHz 45dB 20 25kHz CCITT Audio Response 300 3000 Hz F...

Page 11: ... Tuning Procedure 1 1 1 General 1 1 2 PA Bias Voltage 3 1 3 Battery Threshold 3 1 4 Transmitter Power 4 1 5 Reference Oscillator 4 1 6 Front End Filter 5 1 7 Rated Volume 6 1 8 Squelch 6 1 9 Transmit Modulation Balance Compensation 7 1 10 Transmit Deviation Limit 7 1 11 5 Tone SELECT 5 Transmit Deviation 8 1 12 DTMF Transmit Deviation 9 ...

Page 12: ...Table of Contents 5C 2 ii Radio Tuning Procedure ...

Page 13: ...nto the Service menu the radio must first be read using the File Read Radio menu if the radio has just been programmed with data loaded from disk or from a newly created codeplug then it must still be read so that the RSS will have the radio s actual tuning values All Service windows read and program the radio codeplug directly you do NOT have to use the RSS Read Radio Write Radio functions to pro...

Page 14: ...oprocessor to increase the voltage across a varactor in the reference oscillator to increase the frequency Clicking the Program button stores all the softpot values of the current window permanently in the radio In ALL cases the softpot value is just a relative number corresponding to a D A Digital to Analog generated voltage in the radio All standard measurement procedures and test equipment are ...

Page 15: ...quiescent current shown in table 2 1 The result is the tuning target 4 Click the Toggle Bias button to switch on the quiescent current 5 Adjust the current per the target calculated in step 3 6 Click the Toggle Bias button to switch on the quiescent current again 7 Click the Program button to store the softpot value 1 3 Battery Threshold The radio uses 2 battery threshold levels Tx High and Tx Low...

Page 16: ...ured value in the box Point 1 7 Select the Point 2 value of the first frequency 8 Measure the transmitter power on your power meter 9 Enter the measured value in the box Point 2 10 Click the Toggle PTT button to dekey the radio 11 Repeat steps 3 10 for all test frequencies shown in the window 12 Click the Program button to store the softpot values 1 5 Reference Oscillator Adjustment of the referen...

Page 17: ... at the normal test deviation shown in table 2 3 6 Measure the RSSI voltage at accessory connector pin 15 with a dc voltmeter capable of 1 mV resolution 7 Change the softpot value by the stepsize shown in table 2 4 and note the RSSI voltage The target softpot value is achieved when the measured RSSI voltage change between step 6 and step 7 is lower than the tuning target for the first time The tun...

Page 18: ...ies across the frequency range If the radio supports 20 or 25 kHz channel spacing selection the radio stores separate tuning data for 20 kHz and 25 kHz channel spacing Therefore both sets of tuning data should be tuned independently 1 Set the test box GTF180 meter selection switch to the Audio PA position and connect a SINAD meter to the METER port 2 From the Service menu select Rx Alignments 3 Se...

Page 19: ...r deviation 7 Change the input tone to 3 kHz 200 mVrms 8 Adjust the deviation to within 2 of the value recorded in step 6 9 Check the deviation at 80 Hz again and repeat steps 7 8 if it has changed since step 6 10 Click the Toggle PTT button to dekey the radio 11 Repeat steps 3 10 for the remaining test frequencies 12 Click the Program button to store the softpot values Note The step size change f...

Page 20: ... kHz channel spacing Values for 20 kHz channel spacing are calculated by the radio software 1 From the Service menu select Tx Alignments 2 Select Signalling Deviation to open the signalling deviation tuning window This window is used to set the values for 12 5 kHz radios and the 25 kHz data for 20 25 kHz radios 3 Click the Toggle PTT button to key the radio The status bar will indicate that the ra...

Page 21: ...ues for 20 kHz channel spacing are calculated by the radio software 1 From the Service menu select Tx Alignments 2 Select DTMF Deviation to open the DTMF deviation tuning window This window is used to set the values for 12 5 kHz radios and the 25 kHz data for 20 25 kHz radios 3 Click the Toggle PTT button to key the radio The status bar will indicate that the radio is transmitting 4 Adjust the tra...

Page 22: ...Midband 66 88MHz Tuning Procedure 5C 2 10 Radio Tuning Procedure ...

Page 23: ...ripheral Interface SPI 4 2 10 SPEB Serial Interface 5 2 11 General Purpose Input Output 6 2 12 Normal Microprocessor Operation 6 2 13 FLASH Electronically Erasable Programmable Memory FLASH EEPROM 8 2 14 Electrically Erasable Programmable Memory EEPROM 8 2 15 Static Random Access Memory SRAM 9 Controller Board Audio and Signalling Circuits 3 0 General 9 3 1 Audio Signalling Filter IC ASFIC 9 3 2 A...

Page 24: ...l 16 7 0 Receive Signalling Circuits 17 7 1 Sub audible Data Decoder PL DPL 17 7 2 Alert Tone Circuits 17 Midband 66 88MHz Specific Circuit Description 8 0 Receiver Front End 19 8 1 Front End Band Pass Filter Pre Amplifier 19 8 2 Mixer and Intermediate Frequency IF Section 19 8 3 IF IC U2201 20 9 0 Transmitter Power Amplifier PA 5 25W 20 9 1 Power Controlled Stage 20 9 2 PA Stages 21 9 3 Direction...

Page 25: ...he radio board is based upon an open architecture controller configuration 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 SR...

Page 26: ...611 acts as an electronic on off switch controlled by Q0612 The switch is on when the collector of Q0612 is low When the radio is off Q0612 is cutoff and the voltage at Q0611 base is at A This effectively prevents current flow through Q0611 from emitter to collector When the radio is turned on the voltage at the base of Q0612 is high about 0 6V and Q0612 switches on saturation and pulls down the v...

Page 27: ...OG 3 which is pulled to low by Q0925 Control Head with display while the on off button is pressed If the software detects a low state it asserts B CONTROL via ASFIC pin B4 high which keeps Q0611 and in turn the radio switched on If the on off button is pressed and held while the radio is on the software detects the line ANALOG 3 changing to low and switches the radio off by setting B CONTROL to lo...

Page 28: ...ter of the clock output If the synthesizer cannot generate the required clock frequency it will switch back to its default 3 6864MHz output Because the ASFIC synthesizer and the µP system will not operate without the 2 1MHz reference clock it and the voltage regulators should be checked first when debugging the system 2 9 Serial Peripheral Interface SPI The µP communicates to many of the ICs throu...

Page 29: ...on board device via U0105 10 J0102 5 3 the main board µP generates the CLK J0102 6 4 the main board µP writes serial data via J0102 4 and reads serial data via J0102 2 and 5 when data transfer is complete the main board terminates the chip select and CLK activity 2 10 SPEB Serial Interface The SBEP serial interface allows the radio to communicate with the Radio Service Software RSS via the Radio I...

Page 30: ...of Q0482 and switches off Q0481 until the short is removed 2 12 Normal Microprocessor Operation For this radio the µP is configured to operate in one of two modes expanded and bootstrap In expanded mode the µP uses external memory devices to operate whereas in bootstrap operation the µP uses only its internal memory In normal operation of the radio the µP is operating in expanded mode as described...

Page 31: ...to start executing correctly After the µP starts execution it will periodically pulse these lines to determine the desired operating mode While the Central Processing Unit CPU is running MODA LIR is an open drain CMOS output which goes low whenever the µP begins a new instruction an instruction typically requires 2 4 external bus cycles or memory fetches However since it is an open drain output th...

Page 32: ... 29 and 33 In normal operating mode VPP is below 5V which switches Q0102 off and Q0103 on Resistor divider pair R0132 and R0133 set up 4 1 V on U0102 9 which reduces the chance of logic transitions The FLASH device may be reprogrammed 1 000 times without issue It is not recommended to reprogram the FLASH device at a temperature below 0 C Capacitor C0131 serves to filter out any AC noise which may ...

Page 33: ...n the ASFIC to route audio and or signalling signals through the appropriate filtering gain and attenuator blocks The ASFIC also has 6 General Control Bits GCB0 5 which are CMOS level outputs and used for AUDIO PA ENABLE GCB0 to switch the audio PA on and off EXTERNAL ALARM GCB1 and B CONTROL GCB2 to switch the voltage regulators and the radio on and off GCB3 controls output GPI O accessory connec...

Page 34: ...mplifier input R0205 and C0209 provide a 1kohm 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 Figure 3 1 Transmit Audio Paths Filter capacitor C0210 provides low pass filtering to eliminate frequency components above 3 kHz and C0211 serves as a DC blocking capacitor The audio signal at U...

Page 35: ...the 300 3000Hz voice band pre emphasized if pre emphasis is enabled The capacitor between ASFIC pre emphasis out U0201 C8 and ASFIC limiter in U0201 E8 AC couples the signal between ASFIC blocks and prevents the DC bias at the ASFIC output U0201 H8 from shifting when the ASFIC transmit circuits are powered up The signal is then limited to prevent the transmitter from over deviating The limited MIC...

Page 36: ...Hz which is audible to the human ear However the radio receiver filters out any audio below 300Hz so these tones are never heard in the actual system Only one type of sub audible data can be generated by U0201 ASFIC at any one time The process is as follows using the SPI BUS the µP programs the ASFIC to set up the proper low speed data deviation and select the PL or DPL filters The µP then generat...

Page 37: ...signalling schemes are based on sending a combination of 1200 Hz and 1800 Hz tones only Microphone audio is muted during High Speed Data signalling 5 3 Dual Tone Multiple Frequency DTMF Data DTMF data is a dual tone waveform used during phone interconnect operation It is the same type of tones which are heard when using a Touch Tone telephone There are seven frequencies with four in the low group ...

Page 38: ...nuated and rectified It is then sent to a comparator to produce an active high signal on CH ACT A squelch tail circuit is used to produce SQ DET U0201 H1 from CH ACT The state of CH ACT and SQ DET is high logic 1 when carrier is detected otherwise low logic 0 FLT RX AUDIO J0400 11 16 1 EXTERNAL SPEAKER INTERNAL SPEAKER ACCESSORY CONNECTOR CONTROL HEAD CONNECTOR HANDSET AUDIO 14 1 2 J0101 INT SPKR ...

Page 39: ...AUDIO U0201 J4 The µP programs the attenuator using the SPI BUS based on the volume setting The minimum maximum settings of the attenuator are set by codeplug parameters Since sub audible signalling is summed with voice information on transmit it must be separated from the voice information before processing Any sub audible signalling enters the ASFIC from the IF IC at PL IN U0201 J7 Once inside i...

Page 40: ...hose devices HANDSET AUDIO is available at J0101 14 The received audio from the output of the ASFIC s digital volume attenuator is also routed to U0202 4 pin 9 where it is amplified 15 dB this is set by the 10k 68k combination of R0233 and R0232 This signal is routed from the output of the op amp U202 4 pin 8 to J0101 14 The control head sends this signal directly out to the microphone jack The ma...

Page 41: ...tion in the ASFIC stores one bit every clock cycle The external capacitors C0226 C0225 and C0223 set the low frequency pole for a zero crossings detector in the limiters for PL and HS data The hysteresis of these limiters is programmed based on the type of received data Note that during HS data the µP may generate a sampling waveform seen at U0201 G1 7 2 Alert Tone Circuits When the software deter...

Page 42: ...the µP can generate any tone within the 100 3000Hz audio band This is accomplished by the µP generating a square wave which enters the ASFIC at U0201 C3 Inside the ASFIC this signal is routed to the alert tone generator The output of the generator is summed into the audio chain just after the RX audio de emphasis block Inside U0201 the tone is amplified and filtered then passed through the 8 bit d...

Page 43: ...posed of Q2302 R2302 R2300 and R2311 R2313 In transmit mode the high K9V1 signal fed through diode D2300 switches off the current source and in turn the pre amplifier In receive mode K9V1 must be low to switch on the current source A 3 dB pad R2306 R2308 and R2316 R2318 stabilizes the output impedance and intermodulation performance A second two pole varactor tuned bandpass filter provides additio...

Page 44: ...ttached to the heat sink 9 1 Power Controlled Stage The first stage Q2511 amplifies the RF signal from the VCO line EXCITER PA and controls the output power of the PA The output power of the transistor Q2511 is proportional to its collector current which is adjusted by a voltage controlled current source consisting of Q2641 Q2642 and Q2643 The current of the whole stage is drawn from the RX TX Swi...

Page 45: ...holds this voltage constant thus ensuring the forward power out of the radio to be held to a constant value 9 4 Antenna Switch The antenna switch is switched synchronously with the K9V1 voltage along with the voltage PWR CNTL signal and feeds either the antenna signal coming through the harmonic filter to the receiver or the transmitter signal coming from the PA to the antenna via the harmonic fil...

Page 46: ...n read the PA control voltage PWR CNTL during the tuning process The ALC loop regulates power by adjusting the PA control line PWR CNTL to keep the forward power voltage PWR DETECT at a constant level Opamp U0701 2 and resistors R0701 to R0703 and R0731 subtract the negative PWR DETECT voltage from the PA PWR SET D A output U0731 pin 2 The result is connected to opamp inverting input U0701 4 pin 9...

Page 47: ...X buffer stages Q2760 Q2770 Q2780 and the feedback amplifier Q2790 10 1 Reference Oscillator The Reference Oscillator Y2702 contains a temperature compensated crystal oscillator with a frequency of 16 8 MHz An Analogue to Digital A D converter internal to U2701 and controlled by the microprocessor via serial interface SRL sets the voltage at the warp output of U2701 pin 16 to set the frequency of ...

Page 48: ...ith a steering voltage from 3V to 10V at the varactor diodes the RX frequency range from 87 4MHz to 109 4MHz and the TX frequency range from 66MHz to 88MHz are covered In TX mode the modulation signal coming from the FRAC N synthesizer IC U2701 pin 28 modulates the TX VCO via varactor diode D2731 Both oscillator outputs are combined and buffered by the VCO Buffer Q2760 Q2760 draws a collector curr...

Page 49: ...e timer is started by a low to high transient of the FRACN CE line When the synthesizer is within the lock range the current is determined only by the resistors connected to CPBIAS 1 or the internal current source A settled synthesizer loop is indicated by a high level of signal LOCK DET U2701 2 LOCK DET adds up with signal SQ DET weighted by resistors R0113 R0114 and is routed to one of the uP s ...

Page 50: ...Frequency Synthesis 5C 3 26 Theory of Operation ...

Page 51: ...agram 2 of 2 5 Parts List 4 6 Supply Voltage Schematic Diagram 7 Parts List 8 Power Control Schematic Diagram 9 Parts List 10 Power Amplifier 5 25W Schematic Diagram 11 Parts List 12 Synthesizer Schematic Diagram 13 Parts List 14 Voltage Controlled Oscillator Schematic Diagram 15 Parts List 16 RX FE Schematic Diagram 17 Parts List 18 RX IF Schematic Diagram 19 Parts List 20 Midband 66 88MHz PCB 84...

Page 52: ...gram 27 Parts List 28 RX IF Schematic Diagram 29 Parts List 30 Midband 66 88MHz PCB 8486066B01_T1 PCB Layout Component Side 31 PCB Layout Solder Side 32 Open Controller Schematic Diagram 1 of 3 33 Open Controller_AUDIO Schematic Diagram 2 of 3 35 Open Controller_IO Schematic Diagram 3 of 3 37 Parts List 34 36 38 Supply Voltage Schematic Diagram 39 Parts List 40 ...

Page 53: ...2 L2330 L2331 L2333 L2334 L2501 L2523 L2524 L2525 L2531 L2532 L2533 L2550 L2551 L2552 L2553 L2621 L2622 L2631 L2641 L2651 L2652 L2731 L2732 L2733 L2734 L2741 L2750 L2751 L2752 L2753 L2754 L2761 Q0101 Q0102 Q0103 Q0121 Q0123 Q0124 Q0125 Q0141 Q0401 Q0450 Q0731 Q0741 Q0742 Q2301 Q2511 Q2641 Q2642 Q2643 Q2741 Q2742 Q2751 Q2752 Q2760 R0104 R0105 R0106 R0108 R0110 R0111 R0112 R0113 R0114 R0115 R0116 R0...

Page 54: ...11 D0621 D0721 D2201 D2300 D2601 D2657 D2701 E2702 E2703 E2732 J0102 J0103 L0131 L0200 L2202 L2203 L2332 L2521 L2522 L2601 L2742 L2768 L2774 L2775 L2781 L2783 L2790 Q0104 Q0105 Q0106 Q0122 Q0200 Q0411 Q0421 Q0422 Q0431 Q0432 Q0441 Q0601 Q0611 Q0612 Q0711 Q0732 Q2201 Q2302 Q2521 Q2531 Q2770 Q2780 Q2790 R0100 R0101 R0102 R0103 R0107 R0109 R0117 R0118 R0150 R0161 R0200 R0220 R0411 R0412 R0413 R0414 R...

Page 55: ...Midband 66 88MHz Controller Schematic Diagram Diagrams and Parts Lists 5C 4 3 Midband 66 88MHz Controller Schematic Diagram 1 of 2 ...

Page 56: ...424J03 Connector 8 POS SMD T R J0103 0904424J03 Connector 8 POS SMD T R Circuit Ref Motorola Part No Description L0131 2462587Q40 COIL CHIP 270nH L0132 2462587Q40 COIL CHIP 270nH L0200 2462587K26 CHIP IND 33000 NH Q0101 4880048M01 NPN DIG 47k 47k Q0102 4880048M01 NPN DIG 47k 47k Q0103 4880048M01 NPN DIG 47k 47k Q0104 4880048M01 NPN DIG 47k 47k Q0105 4813824A10 NPN 40V 2A B 50 150 Q0106 4880048M01 ...

Page 57: ...Midband 66 88MHz Controller_IO Schematic Diagram Diagrams and Parts Lists 5C 4 5 Midband 66 88MHz Controller_IO Schematic Diagram 2 of 2 ...

Page 58: ... 50V C0426 2113741F17 470pF 50V C0427 2113741F17 470pF 50V C0431 2113741F17 470pF 50V C0433 2113741F49 10nF 50V C0441 2113741F17 470pF 50V C0442 2113741F17 470pF 50V C0451 2113741F17 470pF 50V D0441 4813833C02 DUAL SOT MMBD6100 J0400 2804503J01 Accessory Connector 16 Pin L0401 2484657R01 Ferrite Bead L0402 2484657R01 Ferrite Bead Q0401 4813824A10 NPN 40V 2A B 50 150 Q0411 4880052M01 NPN DRLNGTN MX...

Page 59: ...F 33uF C0605 C0604 10uF C0603 10uF C0602 1uF 1uF R0615 10K SW_B 47uF C0611 3 3K R0613 9V3 R0612 3 3K 0 1uF C0612 0 1uF Q0612 Q0611 SW_B _8 D0611 1 2 3 R0611 820 R0616 10K 1K D0621 1 2 3 R0614 VR0621 5 1V C0621 470pF 47uF 470pF 9V3_8 C0622 47uF R0621 2 2K VIN 4 VOUT 5 LM2941T U0601 ADJ 1 GND 3 ON_OFF 2 FLT_A _8 0 R0606 VR0641 5 1V R0604 R0605 3 3K 22K 10K R0601 Q0601 C0613 470pF 9V3_1_8 022uF 01027...

Page 60: ...OT MMBD6100 D0621 4813833C02 DUAL SOT MMBD6100 D0631 4813833C02 DUAL SOT MMBD6100 Q0601 4813824A10 NPN 40V 2A B 50 150 Q0611 4805128M27 PNP SOT89 BSR33 LH Q0612 4813824A10 NPN 40V 2A B 50 150 R0601 0662057A73 10k 1 16W 5 R0602 0660076E70 FILM 7500 1 1 R0603 0660076E51 FILM 1200 1 1 R0604 0662057A61 3k3 1 16W 5 R0605 0662057A81 22k 1 16W 5 R0606 0662057B47 0 1 16W R0611 0662057A47 820 1 16W 5 R0612...

Page 61: ...Midband 66 88MHz Power Control Schematic Diagram Diagrams and Parts Lists 5C 4 9 Midband 66 88MHz Power Control Schematic Diagram ...

Page 62: ... 2A B 50 150 Q0731 4880048M01 NPN DIG 47k 47k Q0741 4880048M01 NPN DIG 47k 47k Q0742 4805128M27 PNP SOT89 BSR33 LH R0701 0662057A73 10k 1 16W 5 R0702 0662057A73 10k 1 16W 5 R0703 0662057A61 3k3 1 16W 5 R0704 0662057A93 68k 1 16W 5 R0711 0662057A81 22k 1 16W 5 R0712 0662057A37 330 1 16W 5 R0713 0662057A61 3k3 1 16W 5 R0714 0662057A81 22k 1 16W 5 R0715 0662057A81 22k 1 16W 5 R0716 0662057B16 560k 1 ...

Page 63: ...Midband 66 88MHz Power Amplifier 5 25W Schematic Diagram Diagrams and Parts Lists 5C 4 11 Midband 66 88MHz Power Amplifier 5 25W Schematic Diagram Power Amplifier ...

Page 64: ...51 4802482J02 PIN MA COM D2657 4880236E05 CHIP SCHOTTKY J2501 0905902V01 PWR CONNECTOR 2 PIN J2601 0905901V02 BNC CONNECTOR RENAISSANCE Circuit Ref Motorola Part No Description L2501 2462587X46 IND CHIP LO PRO 27 0 L2521 2460591B80 Square Coil 19 61nH L2522 2484657R01 Ferrite Bead L2523 2460591C23 Square Coil 16nH 3T L2524 2460591C23 Square Coil 16nH 3T L2525 2460591A11 Square Coil 7 66nH 3T L2531...

Page 65: ...Midband 66 88MHz Synthesizer Schematic Diagram Diagrams and Parts Lists 5C 4 13 Midband 66 88MHz Synthesizer Schematic Diagram Note 1 Note 1 Note 1 Not Used Synthesizer ...

Page 66: ... C2722 2311049A07 TANT CP 1uF 10 16V C2723 2109720D14 CER LOW DIST 100nF C2725 2109720D14 CER LOW DIST 100nF C2726 2113741F49 10nF 50V C2727 0811051A19 MTLZ POLY 1uF 5 D2701 4802233J09 DIODE TRIPLE SOT143 RH E2702 2605915V01 SHLD PCB MOUNT 1 R2701 0662057A35 270 1 16W 5 R2702 0662057A35 270 1 16W 5 R2703 0662057A49 1k 1 16W 5 R2705 0662057A89 47k 1 16W 5 R2708 0662057A01 10 1 16W 5 R2709 0662057A0...

Page 67: ...Midband 66 88MHz Voltage Controlled Oscillator Schematic Diagram Diagrams and Parts Lists 5C 4 15 Midband 66 88MHz Voltage Controlled Oscillator Schematic Diagram VCO ...

Page 68: ... L2732 2462587T30 1uH L2733 2462587T23 470nH L2734 2462587T16 120nH L2741 2462587T30 1uH L2742 2462587T30 1uH Circuit Ref Motorola Part No Description L2750 2462587T30 1uH L2751 2462587T30 1uH L2752 2462587T18 180nH L2753 2462587T17 150nH L2754 2462587T30 1uH L2761 2462587T16 120nH L2768 2462587T16 120nH L2774 2462587T12 56nH 5 L2775 2462587T12 56nH 5 L2781 2462587T16 120nH L2790 2462587T18 180nH ...

Page 69: ...Midband 66 88MHz RX FE Schematic Diagram Diagrams and Parts Lists 5C 4 17 Midband 66 88MHz RX FE Schematic Diagram ...

Page 70: ...0V C2335 2113740F51 100pF 5 50V C2336 2113740F51 100pF 5 50V C2337 2113740F51 100pF 5 50V D2300 4813833C02 DUAL SOT MMBD6100 D2301 4805649Q13 VCTR 1SV228 D2303 4880154K03 DUAL SCHOTTKY D2304 4805649Q13 VCTR 1SV228 D2331 4880174R01 QUAD SOIC 8 PIN E2301 2605915V01 SHLD PCB MOUNT 1 L2302 2462587T23 Coil Chip 470nH L2330 2462587N69 CHIP IND 1200 NH L2331 2462587N69 CHIP IND 1200 NH L2332 2462587N69 C...

Page 71: ...band 66 88MHz RX IF Schematic Diagram Diagrams and Parts Lists 5C 4 19 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 ...

Page 72: ... 1uF 10 16V C2232 2113740F51 100pF 5 50V C2233 2113740F51 100pF 5 50V C2234 2113743E20 100nF 16V C2235 2113740F51 100pF 5 50V C2236 2113740F51 100pF 5 50V C2237 2113743E20 100nF 16V C2238 2113743E20 100nF 16V C2239 2113740F44 51pF 5 50V D2201 4880154K03 DIODE DUAL SCHOTTKY D2202 4880154K03 DIODE DUAL SCHOTTKY FL2201 9180098D06 FILTER CER 4 EL 455kHz FL2202 9180097D06 FILTER CER 6 EL 455kHz L2201 2...

Page 73: ...2 L2330 L2331 L2333 L2334 L2501 L2523 L2524 L2525 L2531 L2532 L2533 L2550 L2551 L2552 L2553 L2621 L2622 L2631 L2641 L2651 L2652 L2731 L2732 L2733 L2734 L2741 L2750 L2751 L2752 L2753 L2754 L2761 Q0101 Q0102 Q0103 Q0121 Q0123 Q0124 Q0125 Q0141 Q0401 Q0450 Q0731 Q0741 Q0742 Q2301 Q2511 Q2641 Q2642 Q2643 Q2741 Q2742 Q2751 Q2752 Q2760 R0104 R0105 R0106 R0108 R0110 R0111 R0112 R0113 R0114 R0115 R0116 R0...

Page 74: ...611 D0621 D0721 D2201 D2300 D2601 D2657 D2701 E2702 E2703 E2732 J0102 J0103 L0131 L0200 L2202 L2203 L2332 L2521 L2522 L2601 L2742 L2768 L2774 L2775 L2781 L2783 L2790 Q0104 Q0105 Q0106 Q0122 Q0200 Q0411 Q0421 Q0422 Q0431 Q0432 Q0441 Q0601 Q0611 Q0612 Q0711 Q0732 Q2201 Q2302 Q2521 Q2531 Q2770 Q2780 Q2790 R0100 R0101 R0102 R0103 R0107 R0109 R0117 R0118 R0150 R0161 R0200 R0220 R0411 R0412 R0413 R0414 ...

Page 75: ...3 100pF 10K D0721 1 2 3 D0731 1 2 3 150K R0724 VLTG_LIMIT R0720 100K 100K NU R0737 1k 100K R0704 PWR_DETECT 9V3 3 3K R0703 R0702 10K 10K R0701 100pF C0702 100pF C0701 10 8 VAG MC3403 U0701 4 9 MC3403 U0701 3 13 12 14 MC3403 U0701 2 6 5 7 10K XX XX R0731 D0733 XX NU 18K R0705 NU 0047uF C0705 100pF C0732 BIAS_VLTG 47K R0733 SPI_DATA_SRC BIAS_VLTG_7 C0731 1uF SPI_DATA_SRC_7 R0717 33K 0102725B74 C0741...

Page 76: ...IG 47k 47k Q0732 4805921T02 DUAL ROHM FMC2 Q0741 4880048M01 NPN DIG 47k 47k Q0742 4805128M27 PNP SOT89 BSR33 LH R0701 0662057A73 10k 1 16W 5 R0702 0662057A73 10k 1 16W 5 R0703 0662057A61 3k3 1 16W 5 R0704 0662057A97 100k 1 16W 5 R0711 0662057A81 22k 1 16W 5 R0712 0662057A37 330 1 16W 5 R0713 0662057A61 3k3 1 16W 5 R0714 0662057A81 22k 1 16W 5 R0715 0662057A81 22k 1 16W 5 R0716 0662057B16 560k 1 16...

Page 77: ...Midband 66 88MHz Power Amplifier 5 25W Schematic Diagram Diagrams and Parts Lists 5C 4 25 Midband 66 88MHz Power Amplifier 5 25W Schematic Diagram Power Amplifier ...

Page 78: ...5 DIODE CHIP SCHOTTKY J2501 0905902V01 PWR CONNECTOR 2 PIN J2601 0905901V02 BNC CONNECTOR RENAISSANCE L2501 2462587X46 IND CHIP LO PRO 27 0 L2521 2460591B80 SQUARE COIL 19 61nH L2522 2484657R01 Ferrite Bead L2523 2460591C23 SQUARE COIL 16nH 3T L2524 2460591C23 SQUARE COIL 16nH 3T Circuit Ref Motorola Part No Description L2525 2460591A11 SQUARE COIL 7 66nH 3T L2531 2460591M77 SQUARE COIL 38nH 4T L2...

Page 79: ...Midband 66 88MHz Synthesizer Schematic Diagram Diagrams and Parts Lists 5C 4 27 Midband 66 88MHz Synthesizer Schematic Diagram Note 1 Note 1 Note 1 Not Used Synthesizer ...

Page 80: ...7 TANT CP 1uF 10 16V C2723 2109720D14 CER LOW DIST 100nF C2725 2109720D14 CER LOW DIST 100nF C2726 2113741F49 10nF 50V C2727 0811051A19 MTLZ POLY 1uF 5 D2701 4802233J09 DIODE TRIPLE SOT143 RH E2702 2605915V01 SHLD PCB MOUNT 1 R2701 0662057A35 270 1 16W 5 R2702 0662057A35 270 1 16W 5 R2703 0662057A49 1k 1 16W 5 R2705 0662057A89 47k 1 16W 5 R2708 0662057A01 10 1 16W 5 R2709 0662057A01 10 1 16W 5 R27...

Page 81: ...dband 66 88MHz RX IF Schematic Diagram Diagrams and Parts Lists 5C 4 29 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 ...

Page 82: ...1 2311049A07 TANT CP 1uF 10 16V C2232 2113740F51 100pF 5 50V C2233 2113740F51 100pF 5 50V C2234 2113743E20 100nF 16V C2235 2113740F51 100pF 5 50V C2236 2113740F51 100pF 5 50V C2237 2113743E20 100nF 16V C2238 2113743E20 100nF 16V C2239 2113740F47 68pF 5 50V D2201 4880154K03 DIODE DUAL SCHOTTKY D2202 4880154K03 DIODE DUAL SCHOTTKY FL2201 9180098D06 FILTER CER 4 EL 455kHz FL2202 9180097D06 FILTER CER...

Page 83: ...2733 L2734 L2741 L2750 L2751 L2752 L2753 L2754 L2761 Q0101 Q0102 Q0103 Q0121 Q0123 Q0124 Q0125 Q0141 Q0171 Q0401 Q0450 Q0731 Q0741 Q0742 Q2301 Q2511 Q2641 Q2642 Q2643 Q2741 Q2742 Q2751 Q2752 Q2760 R0104 R0105 R0106 R0108 R0109 R0110 R0111 R0112 R0113 R0114 R0115 R0116 R0119 R0120 R0121 R0122 R0123 R0124 R0125 R0126 R0127 R0128 R0129 R0130 R0131 R0132 R0133 R0134 R0136 R0137 R0138 R0139 R0142 R0143...

Page 84: ...2 L2521 L2522 L2601 L2742 L2768 L2774 L2775 L2781 L2783 L2790 Q0104 Q0105 Q0106 Q0122 Q0200 Q0411 Q0421 Q0422 Q0431 Q0432 Q0441 Q0481 Q0482 Q0601 Q0611 Q0711 Q0732 Q2201 Q2302 Q2521 Q2531 Q2770 Q2780 Q2790 R0100 R0101 R0102 R0103 R0107 R0118 R0150 R0151 R0152 R0153 R0154 R0155 R0161 R0162 R0163 R0164 R0200 R0204 R0205 R0206 R0220 R0221 R0222 R0246 R0411 R0412 R0413 R0414 R0415 R0416 R0418 R0419 R0...

Page 85: ...23 470pF C0152 470pF C0155 470pF C0161 470pF C0162 470pF C0163 470pF C0164 4 2 2 3 R0164 1 0 100 R0134 NU 0 R0122 R0100 4 7K 47K FRACN_CE_5 SPI_DATA_5 SPI_CLK_5 SPI_DATA_SRC_5 4 DAC_CE_5 47K Q0101 47K 14 Y1 13 Y2 12 Y3 Y4 11 10 Y5 9 Y6 7 Y7 A1 2 A2 3 6 CS1 CS2 4 CS3 5 16 VDD 8 GND 15 Y0 U0105 MC74HC138A 1 A0 4 5 14 6 270nH L0131 2 SPI_CLCK_SRC 10K R0116 47K 47K Q0102 47K 2 3 R0115 47K 1 10V D0102 ...

Page 86: ...IP 33pF 5 50V C0234 2113743E20 CAP CHIP 100nF 16V Circuit Ref Motorola Part No Description C0235 2113743A19 CAP CHIP 100nF 16V C0242 2113741F17 CAP CHIP 470pF 50V C0246 2113740F36 CAP CHIP 24pF 5 50V C0251 2113743E20 CAP CHIP 100nF 16V C0252 2311049J23 CAP TANT CP 10uF 10 6V C0253 2311049A07 CAP TANT CP 1uF 10 16V C0254 2113743E20 CAP CHIP 100nF 16V C0401 2113743A19 CAP CHIP 100nF 16V C0402 211374...

Page 87: ...2 U0202 4 C0231 01uF 470pF C0242 1uF C0251 1K 1uF C0206 R0205 C0205 1uF 22uF R0202 47K 1uF 10uF C0253 C0252 47 5K R0251 47 5K R0252 100 R0204 R0221 0 U0202 1 2 3 1 13 12 14 MC3403 U0202 3 MC3403 PWR_GND GND 4 VCC 8 MC33072 2 3 1 U0251 3 U0251 1 0 R0240 J0103 7 7 J0103 3 3 6 6 J0103 6 2 5 7 2 J0103 2 6 5 MC3403 U0202 2 R0225 27K 33K R0236 R0241 NU 0 MOD_IN 10K R0224 C0230 10uF R0223 47 5K R0206 DET...

Page 88: ...73 10k 1 16W 5 R0210 0662057A49 1k 1 16W 5 R0220 0662057A77 15k 1 16W 5 0662057A84 30k 1 16W 5 Circuit Ref Motorola Part No Description R0221 0662057B47 0 1 16W R0222 0662057A89 47k 1 16W 5 R0223 0662057R92 47 5k 1W 1 R0224 0662057A73 10k 1 16W 5 R0225 0662057A83 27k 1 16W 5 R0231 0662057B47 0 1 16W R0232 0662057A93 68k 1 16W 5 R0233 0662057A73 10k 1 16W 5 R0235 0662057A93 68k 1 16W 5 R0236 066205...

Page 89: ..._OUT ANALOG_GND SW_B 13 5 FLAT_TX_AUDIO EXTERNAL_ALARM 4 14 HOOK SCI_DATA_IN 6 11 FLAT_RX_AUDIO 3 EXTERNAL_PTT 16 EXT_SPKR 2 EXTERNAL_MIC_AUDIO 15 RSSI 9 EMERGENCY_SWITCH IGNITION R0433 J0400 14V VR0421 4 7K 470pF NU NU 14V VR0422 C0421 14V VR0431 0 NU R0416 100 R0413 VR0441 33V 4 7K R0401 270 R0424 R0406 22K 470pF R0426 NU 0 1uF C0423 C0409 4 7K 01uF C0408 R0412 C0407 01uF 4 7K R0450 33K R0449 10...

Page 90: ...27 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 VR0426 4813830A27 14V 5 225mW VR0427 4813830A27 14V 5 225mW VR0431 4813830A27 14V 5 225mW VR0441 4813830A40 SOC23 AUTO SDN VR0451 4813830A15 5 6V 5 225mW Circuit Ref Motorola Part No Description ...

Page 91: ...SUPPLY VLTG SENSE 2 SHUTDOWN 3 C0633 6 5V_TAP 5 ERROR FEEDBACK 7 GND 4 INPUT 8 OUTPUT 1 LP2951CM U0631 LP2951CM C0611 47uF D0611 1 2 3 9V3 1K R0614 1uF SW_B C0602 C0641 1uF 30K R0641 R0642 10K R0632 10 R0631 10 33uF C0632 C0634 47uF R0604 1K C0635 1uF 2 3 C0631 1uF D0631 1 1 2K 1 2K R0603 R0602 7 5K 7 5K C0601 470pF FLT_A _8 0 R0606 VR0641 5 1V ADJ 1 GND 3 ON_OFF 2 VIN 4 VOUT 5 LM2941T U0601 9V3 5...

Page 92: ...C0635 2113743E20 100nF 16V C0641 2113743E20 100nF 16V D0611 4813833C02 DUAL SOT MMBD6100 D0621 4813833C02 DUAL SOT MMBD6100 D0631 4813833C02 DUAL SOT MMBD6100 Q0601 4813824A10 NPN 40V 2A B 50 150 Q0611 4805921T02 DUAL ROHM FMC2 RH R0601 0662057A73 10k 1 16W 5 R0602 0660076E70 FILM 7500 1 1 R0603 0660076E51 FILM 1200 1 1 R0604 0662057A49 1k 1 16W 5 R0605 0662057A69 6k8 1 16W 5 R0606 0662057B47 0 1 ...

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