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CIRCUIT DESCRIPTION

6-2

March 1999
Part No. 001-2009-600

Figure 6-1   RECEIVER BLOCK DIAGRAM

RECEIVE

RF IN

L201/L202/L203

FILTER

BANDPASS

Q201

RF AMP

L204/L205/L206

FILTER

BANDPASS

U201

MIXER

CRYSTAL FILTER

Z201/Z202

Q202

IF AMP

CRYSTAL FILTER

Z203/Z204

AUDIO AMP

U203A

RSSI

U203B

RSSI

Q205

MULTIPLIER

BUFFER

U209

SYN CS RX

SYN LK RX

BUFFER

VCO

BUFFER

Q214/Q215

AMP

AMP

U204A

Y201

RX INJ

TP

Z205

U202

RX WB AUDIO

Q216
Q217

Q210
Q211

Q208
Q209

A201

A006

450 kHz

52.5 MHz

52.95 MHz 4-POLE 52.95 MHz

52.95 MHz

RF DATA

RF CLK

DATA

CLK

EN

LD

PD

OUT

F

IN

IN

BPF

L223
L224

BANDPASS

FILTER

L215
L216

52.95 MHz 4-POLE

17.5 MHz TCXO

DATA

CLK

EN

LD

PD

OUT

F

IN

IN

HS CS RX

HS LK RX

U205

BUFFER

Q210
Q211

Q203

Q204

OCXO IN

TX OCXO

QUADRATURE DETECTOR/

843-848 MHz

SYNTHESIZER

SYNTHESIZER

REF

HIGH STABILITY

REF

MAIN

2ND MIXER

6.1.6  SECOND MIXER/DETECTOR

As shown in Figure 6-2, U202 contains second 

oscillator, second mixer, limiter, detector and RSSI 
circuitry.  The 52.95 MHz IF signal is mixed with a 
52.5 MHz signal produced by TCXO Y201 and tripler 
Q205.  The 17.5 MHz (

±

0.1 PPM) output of Y201 is 

fed through C231 to tripler Q205.  The tripler passes 
the third harmonic at 52.5 MHz to the OSC B input of 
U202.

Biasing of Q205 is provided by R228, R227 and 

R229.  RF choke L214 blocks the flow of RF through 
R229.  An AC voltage divider formed by C236/C235 
matches Q205 to the highpass filter.  The third har-
monic of the TCXO frequency is then used to drive 
the OSC B input at 52.5 MHz.  L215, C237 and L216 
form a high pass filter to attenuate frequencies below 
52.95 MHz.  C222 and C238 match the output of the 
filter to U202.

Figure 6-2   U202 BLOCK DIAGRAM

MIXER

LIMITER

OS

C

AMP

DEM

O

DUL

A

T

OR

AMP

AMP

FILTER

S

Q

UE

LCH T

R

IGGE

R

WI

TH HY

STE

R

ES

IS

AF

QUAD COIL

DECOUPLING 1

DECOUPLING 2

GROUND

SQUELCH IN

FILTER OUT

FILTER IN

RSSI

AUDIO

9

10

11

12

13

MUTE

14

15

16 MIXER IN

IF IN

Vcc

MIXER OUT

OSC E

7

6

5

4

3

2

OSC B 1

8

Содержание 242-2009-632

Страница 1: ...1 1 October 1995 Part No 001 2008 202 SERVICE MANUAL VIKING VX 900 MHz LTR Net 75W 160W Repeater Part No 242 2009 632 634 First Printing March 1999 Part No 001 2009 600 3 99mwp Printed in U S A...

Страница 2: ...1 2 October 1995 Part No 001 2008 202...

Страница 3: ...the radio in explosive or flammable atmospheres The transmitted radio energy could trigger blasting caps or cause an explosion DO NOT operate the radio without the proper antenna installed DO NOT allo...

Страница 4: ...1 4 October 1995 Part No 001 2008 202...

Страница 5: ...TEM COMPONENTS 1 8 INTRODUCTION 1 8 MOBILE TRANSCEIVERS 1 8 REPEATERS 1 8 SWITCH 1 10 CALL PROCESSOR AND SYSTEM and SUBSCRIBER MANAGER 1 10 LOCALITY 1 10 HOME REPEATER CHANNEL 1 10 STATUS REPEATER CHA...

Страница 6: ...QUIREMENTS 3 1 PROGRAMMING CABLES 3 2 EEPROM DATA STORAGE 3 2 GETTING STARTED 3 2 LIMITATIONS 3 2 3 2 MISCELLANEOUS SOFTWARE INFORMATION 3 3 MINIMUM FREE MEMORY REQUIRED 3 3 SOFTWARE INSTALLATION 3 3...

Страница 7: ...ATIONS 5 1 5 2 LOCALITY SETUP 5 1 General Parameters 5 2 5 3 HOW DO I 5 2 CREATING A NEW SITE FILE 5 2 OPEN AN EXISTING SITE FILE 5 2 MODIFY AN EXIXTING SITE FILE 5 2 ADD A REPEATER 5 2 CHANGE A REPEA...

Страница 8: ...IFIER PRE DRIVER 6 16 DRIVER 6 16 FINAL AMPLIFIERS 6 16 POWER DETECTORS 6 17 THERMAL SENSOR 6 17 FORWARD REVERSE POWER DETECT CIRCULATOR LOW PASS FILTER 6 17 6 5 160W POWER AMPLIFIER 6 17 GAIN BLOCK 6...

Страница 9: ...12 MAIN AUDIO CARD 6 38 INTRODUCTION 6 38 AUDIO DATA MICROPROCESSOR 6 38 RECEIVE AUDIO 6 38 RECEIVE SQUELCH CIRCUITRY 6 39 RECEIVE DATA CIRCUITRY 6 39 RECEIVE AUDIO PROCESSING 6 40 VOTER AUDIO 6 40 CO...

Страница 10: ...7 5 FORWARD POWER OUTPUT CALIBRATION 7 5 PRE DRIVER POWER LIMIT ADJUSTMENT 7 5 REFLECTED POWER ADJUST 7 6 7 5 160W POWER AMPLIFIER ALIGNMENT 7 7 POWER OUTPUT ADJUSTMENTS 7 7 PRE DRIVER POWER LIMIT ADJ...

Страница 11: ...TANTALUM CHIP CAPS 510 26xx xxx 8 5 CHIP INDUCTORS 542 9000 xxx 8 5 CHIP RESISTORS 8 5 CHIP TRANSISTORS AND DIODES 8 6 8 7 BERYLLIUM PRODUCT WARNING 8 7 8 8 GRAFOIL REPLACEMENT PROCEDURE 8 7 9 PARTS L...

Страница 12: ...10 16 RECEIVER SCHEMATIC 10 11 10 17 EXCITER BOARD COMPONENT LAYOUT 10 12 10 18 TRANSMIT VCO COMPONENT LAYOUT 10 13 10 19 TRANSMIT VCO SCHEMATIC 10 14 10 20 EXCITER SCHEMATIC 10 15 10 21 75W POWER AM...

Страница 13: ...2 REPEATER CARDS 1 5 1 3 LTR Net SYSTEM COMPONENTS 1 9 1 1 BATTERY BACKUP CONNECTOR 2 2 1 2 TEMPERATURE SENSOR CABLE 2 2 1 3 RACK MOUNTED REPEATERS 2 5 1 4 5 CHANNEL COMBINING SYSTEM 2 6 1 5 MPC DATA...

Страница 14: ...NG 6 15 6 8 75W PA BLOCK DIAGRAM 6 17 6 9 160W PA BLOCK DIAGRAM 6 18 6 10 RF INTERFACE BOARD BLOCK DIAGRAM 6 25 6 11 POWER SUPPLY BLOCK DIAGRAM 6 27 6 12 NO LOAD CHARGE VOLTAGE vs TEMPERATURE 6 31 6 1...

Страница 15: ...T TEST SETUP 7 23 7 25 BATTERY CHARGER TEST SETUP 7 25 7 26 SWITCH RNT BACKPLANE WIREHARNESS 7 26 7 27 SWITCH RNT PUNCH BLOCK 7 27 7 28 MAC ALIGNMENT POINTS 7 28 7 29 MAIN PROCESSOR CARD ALIGNMENT POI...

Страница 16: ...xii TABLE OF CONTENTS CONT D...

Страница 17: ...inets need to be sealed A heat exchanger i e air conditioner is then required to cool the cabinets The air conditioners must be suited for the environment Each low power repeater 75W requires 1200 BTU...

Страница 18: ...l backup and over the air mobile reprogramming LTR Net signaling and repeater control is provided by the Main Processor Card The repeater connects to the 3000 Series Switch using a phone line or some...

Страница 19: ...io and push to talk while the speaker provides local audio adjusted with the volume control 1 7 PRODUCT WARRANTY The warranty statement for this transceiver is available from your product supplier or...

Страница 20: ...urning equipment for repair use a PO number or some other reference number on your paperwork in case you need to call the repair lab about your unit These numbers are referenced on the repair order an...

Страница 21: ...1 blinking MPC is operational CR2 on high power off is low power and CR5 on indicates an LTR Repeater 1 13 2 TEST MODE When the Repeater is in Test mode the safety measures are disabled Therefore if t...

Страница 22: ...IAC input 1 Active IAC input 2 Active IAC input 3 Active IAC input 4 Active IAC input 5 Active IAC input 6 Active IAC input 7 Active IAC input 8 Active MAC Processor Alarm HSDB Processor Cable Alarm I...

Страница 23: ...of the repeater Power Indicator CR501 indicates the 5V supply is at normal level and applied to the IAC CR524 indicates 5V supply is at normal level and applied to the IAC CR523 indicates the 15V acc...

Страница 24: ...ling Example an entire LTR Net system could be designed using Conventional channels which use tone or digitally controlled squelch The various types of signaling can also be mixed in a system Example...

Страница 25: ...r With mobile to repeater calls the data fed to the Switch is used to determine what routing is required for the call On Switch to mobile calls the data fed to the repeater allows the Switch to operat...

Страница 26: ...ule is required for each LTR Net repeater A CCM Conventional Channel Module is required for a conventional channel 1 14 7 HOME REPEATER CHANNEL All LTR Net mobiles have one of the Locality repeaters a...

Страница 27: ...Switch provides 32 Time Slots for sending of audio 1 15 LTR Net FEATURES 1 15 1 STANDARD AND SPECIAL CALLS There are two types of calls with LTR Net signal ing Standard Calls and Special Calls Group...

Страница 28: ...ll is accepted by a mobile if its Home Repeater and Group ID are in the data message A special calls are Tele phone Interconnect calls UID calls and Directed Group calls Auxiliary calls Telephone Inte...

Страница 29: ...75 dB Spurious Image Rejection 90 dB Audio Squelch Sensitivity 12 dB SINAD Audio Response 1 3 dB TIA Audio Distortion Less than 3 at 0 5W 16 ohms Local Audio Power 0 5W 16 ohms Audio Sensitivity 750...

Страница 30: ...A DC at initial turn on 0 7A DC after warm up Frequency 10 MHz Reference Signal Outputs 8 1 25 MHz outputs External 10 MHz Signal Input Level 2V P P minimum high impendance input Output Amplitude 0 dB...

Страница 31: ...nstalled in an area that exceeds these environmental conditions the site should be equipped with air filters to remove dust and dirt that could cause the equipment to overheat 2 3 VENTILATION The RF m...

Страница 32: ...KUP If the power supply is equipped with battery backup screw lugs are provided on the front of the power supply for battery connections see Figure 2 2 A switch is provided for charging the battery or...

Страница 33: ...repeater The fan is thermostatically controlled by the internal temperature When the internal heatsink temperature reaches 45 C 113 F the fan turns on When the heatsink temperature drops below 35 C 9...

Страница 34: ...line with the combiner and antenna feed line RF protectors are selected by calculating the maximum instantaneous voltage at the output of the combiner Do this by using the following equation VP 1 414...

Страница 35: ...1 8 If everything appears undamaged remove the Repeater equipment from the crate using normal pre cautions for unpacking NOTE Do not discard the packing materials If you must return an item use the sa...

Страница 36: ...7 6 5 4 3 2 1 4 3 S3 S2 ON 2 1 4 3 S3 ON 2 1 8 7 6 5 4 3 2 9 2 MPC DATA BUS JUMPER SETTINGS Refer to Figure 2 6 for crystal selection and HSDB Code selections jumper placement Jumper J5 pins 1 2 sele...

Страница 37: ...panel see Fig ures 2 8 2 12 and 2 13 The information which fol lows describes the installation of these links 2 11 1 VOICE LINK The voice link is always connected and it should be a standard 4 wire 60...

Страница 38: ...eater Up to eight 2009 series repeaters can be connected to the 1 25 MHz Output ports This level is approximately 0 dBm If connection to additional 2009 series repeaters is necessary additional 8 Way...

Страница 39: ...T 20dB 10dB 10dB 6dB 3dB OUTPUT J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 ATTENUATOR INPUT 20dB 10dB 10dB 6dB 3dB OUTPUT J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 ATTENUATOR INPUT 20dB 10dB 10dB 6dB 3dB OUTPUT J1 J2 J3 J4...

Страница 40: ...5 MHz SERIES 2000 OCXO DRAWER 023 2000 925 TO GPS 10 MHz 10 MHz 1 25 MHz B B TEMP J4 1 2 3 4 6 5 MPC SWITCHES JUMPERS 2 3 1 J5 SELECTION HSDB CODE SELECTION CRYSTAL J4 1 2 3 4 6 5 MPC SWITCHES JUMPERS...

Страница 41: ...ON HSDB CODE SELECTION CRYSTAL J4 1 2 3 4 6 5 MPC SWITCHES JUMPERS 2 3 1 J5 SELECTION HSDB CODE SELECTION CRYSTAL ON ON S3 S2 2 1 8 7 6 5 4 3 2 1 4 3 ON ON S3 S2 2 1 8 7 6 5 4 3 2 1 4 3 ON ON S3 S2 2...

Страница 42: ...EATERS ON ON S3 S2 2 1 8 7 6 5 4 3 2 1 4 3 ALL MIDDLE REPEATERS 1 2 3 4 6 5 2 3 1 J5 SELECTION HSDB CODE SELECTION CRYSTAL J4 1 2 3 4 6 5 2 3 1 J5 SELECTION HSDB CODE SELECTION CRYSTAL J4 ON ON S3 S2...

Страница 43: ...the IBM computer and may differ from an IBM compatible In which case consult the manuals for your computer for serial card outputs and connections 3 1 2 MINIMUM COMPUTER REQUIREMENTS The LTR Net Prog...

Страница 44: ...From the repeater standpoint an LTR Net system consists of one or more repeaters installed in a Local ity a 3000 Series Switch and the necessary intercon nects and programming to provide LTR Net opera...

Страница 45: ...cond method of starting the program is to use the Explorer to change to the directory containing Locality files then double click on one of those Local ity files This starts the programmer and automat...

Страница 46: ...s Open Ctrl O Save As Save Ctrl S Files List Exit Adjacent Locality Data Input Alarms Output Alarms Alarm Cross Reference Write Setup Parameters Rx Tx Data RF Data Input Monitor Revisions Mode Select...

Страница 47: ...formation in the programmer and loads factory defaults If the current data has been changed selecting File New or the icon provides the opportu nity to save the data before loading the defaults 4 2 2...

Страница 48: ...EATERS PARAMETERS Delete Entry Removes the selected Defined Repeater from the list Frequency Band Selects the Locality frequency band 800 MHz 800 MHz with offset or 900 MHz Channel Number Select a rep...

Страница 49: ...r This menu selection or icon se lects a repeater from the currently defined re peaters within this Locality see Figure 4 8 Move the cursor with the mouse to highlight the repeater filena me and doubl...

Страница 50: ...FSK RF Power Level Low High Low 25 75 High 75 160 Power level in watts for transmit power output Options Stand Alone Selected if the repeater is permitted to operate without a connection to the 3000 S...

Страница 51: ...tput Alarms Select the operation of the Output Alarm The available types are Open Active An active alarm opens no contact the output lines Closed Active An active alarm closes contact the output lines...

Страница 52: ...ut Alarms An alarm condition on any input can cause an Output Alarm This win dow configures which Input Alarm activates an Output Alarm NOTE More than one alarm condition can share the same output ala...

Страница 53: ...of a re peater and loads it into a buffer The contents of the buffer may then be displayed to show the programming of the repeater NOTE This button is only available if a Locality file is loaded and a...

Страница 54: ...alk group of the originator The UID is the Unique ID used to identify the originator of Special Calls Special Call informa tion is listed in the Token and Subtype columns 4 5 2 RECEIVE TRANSMIT DATA T...

Страница 55: ...Example Value 51 Volts Any variation from the above values may indicate a problem in that area Values in this window are relative measurements only 4 5 4 INPUT MONITOR This window monitors the two Ana...

Страница 56: ...peater Information see Section 4 3 3 C A U T I O N While in the test or diagnostics mode the repeater is Busy therefore it is important to place the repeater in Normal mode when the Test Mode is no lo...

Страница 57: ...ws Refer to Section 7 2 for the Receiver alignment in this manual and Figure 7 1 for an alignment points diagram and Figure 7 9 of the Receiver 4 6 4 FULL REPEATER This menu selection walks through th...

Страница 58: ...4 Edit Locality Information 4 3 1 Edit Select Repeater 4 3 2 Edit Repeater Information 4 3 3 Transfer Read Setup Parameters 4 4 1 Transfer Write Setup Parameters 4 4 2 Hardware HSDB Monitor 4 5 1 Har...

Страница 59: ...formation in the programmer and loads factory defaults If the current data has been changed selecting File New or the icon provides the opportu nity to save the data before loading the defaults 4 2 2...

Страница 60: ...EATERS PARAMETERS Delete Entry Removes the selected Defined Repeater from the list Frequency Band Selects the Locality frequency band 800 MHz 800 MHz with offset or 900 MHz Channel Number Select a rep...

Страница 61: ...r This menu selection or icon se lects a repeater from the currently defined re peaters within this Locality see Figure 4 8 Move the cursor with the mouse to highlight the repeater filena me and doubl...

Страница 62: ...FSK RF Power Level Low High Low 25 75 High 75 160 Power level in watts for transmit power output Options Stand Alone Selected if the repeater is permitted to operate without a connection to the 3000 S...

Страница 63: ...tput Alarms Select the operation of the Output Alarm The available types are Open Active An active alarm opens no contact the output lines Closed Active An active alarm closes contact the output lines...

Страница 64: ...ut Alarms An alarm condition on any input can cause an Output Alarm This win dow configures which Input Alarm activates an Output Alarm NOTE More than one alarm condition can share the same output ala...

Страница 65: ...of a re peater and loads it into a buffer The contents of the buffer may then be displayed to show the programming of the repeater NOTE This button is only available if a Locality file is loaded and a...

Страница 66: ...alk group of the originator The UID is the Unique ID used to identify the originator of Special Calls Special Call informa tion is listed in the Token and Subtype columns 4 5 2 RECEIVE TRANSMIT DATA T...

Страница 67: ...Example Value 51 Volts Any variation from the above values may indicate a problem in that area Values in this window are relative measurements only 4 5 4 INPUT MONITOR This window monitors the two Ana...

Страница 68: ...peater Information see Section 4 3 3 C A U T I O N While in the test or diagnostics mode the repeater is Busy therefore it is important to place the repeater in Normal mode when the Test Mode is no lo...

Страница 69: ...ws Refer to Section 7 2 for the Receiver alignment in this manual and Figure 7 1 for an alignment points diagram and Figure 7 9 of the Receiver 4 6 4 FULL REPEATER This menu selection walks through th...

Страница 70: ...4 Edit Locality Information 4 3 1 Edit Select Repeater 4 3 2 Edit Repeater Information 4 3 3 Transfer Read Setup Parameters 4 4 1 Transfer Write Setup Parameters 4 4 2 Hardware HSDB Monitor 4 5 1 Har...

Страница 71: ...he repeater data for a Locality To do this use the Explorer to change to the directory containing the Locality Files then double click on one of those Locality Files This starts the programmer and aut...

Страница 72: ...aving this Locality area Select one of the following File Save pull down menu Ctrl S icon This assigns a filename to this Site File and the file name appears in the File pull down menu and in the Open...

Страница 73: ...ng for Q201 is provided by R201 R202 R203 R204 and C204 provides RF bypass A 1 8 dB attenuator follows amplifier Q201 Additional filtering of the receive signal is provided by 3 pole helical filter L2...

Страница 74: ...As shown in Figure 6 2 U202 contains second oscillator second mixer limiter detector and RSSI circuitry The 52 95 MHz IF signal is mixed with a 52 5 MHz signal produced by TCXO Y201 and tripler Q205 T...

Страница 75: ...ity of the OCXO Oven Con trolled Crystal Oscillator see Section 6 3 The phase detector input signals are generated by counters in U205 that are programmed to divide by a certain number This programmin...

Страница 76: ...hen U205 pin 17 is low Data is clocked into the shift registers a bit at a time by a low to high transition on the Clock input port U205 pin 18 The Clock pulses come from the MPC via the IAC to J201 p...

Страница 77: ...y range The VCO oscillates in a frequency range from 843 848 MHz Biasing of Q802 is provided by R805 R806 and R807 AC voltage divider C812 and C813 initiates and maintains oscillation C803 couples Q80...

Страница 78: ...amming circuitry Frequencies are selected by programming the three counters in U209 to divide by assigned numbers The programming of these counters is performed by circuitry in the Main Proces sor Car...

Страница 79: ...the IAC 6 1 18 BUFFER AMPLIFIER A cascode amplifier formed by Q214 and Q215 provides amplification and also isolation between the VCO and Receiver RF stages A cascode amplifier is used because it prov...

Страница 80: ...he backplane to the bottom connectors via pin 7 and finally to the MAC on P100 pin 7 With reference to the ground on the Exciter the 3 5V reference stability is maintained by U126B C D on the MAC The...

Страница 81: ...input port U401 pin 18 The Clock pulses come from the MPC via the IAC to J401 pin 19 The counter divide numbers are chosen so the TCXO derived input to the phase detector fV is the same frequency as...

Страница 82: ...by C411 C413 and C414 The output of Q401 Q402 is coupled to U401 pin 11 by C412 6 2 8 EXCITER SYNTHESIZER The synthesizer inputs outputs are shown in Fig ures 6 3 and 6 4 The synthesizer output signa...

Страница 83: ...put is produced by dividing the VCO frequency using the prescaler and N counter in U403 The prescaler divides by 64 or 65 The divide number of the prescaler is controlled by the N and A counters in U4...

Страница 84: ...iter RF stages by C446 R450 and two sections of microstrip 6 2 13 RF AMPLIFIERS RF amplifier Q412 is biased by CR402 R469 R470 and R472 C448 provides RF bypass from the DC line and R471 R472 provide s...

Страница 85: ...9 Q920 K905 DC ALARM Q923 Q924 Q920 K906 AC ALARM DC ALARM INDICATOR U914A Q916 Q917 DS905 S902 S903 SWITCH CONTROLS FRONT PANEL OCXO 1 S901 TEST TEST OCXO 2 DC ON OFF INDICATOR AC ALARM Q912 DS906 U9...

Страница 86: ...IVER The OCXOs produce a signal level greater than 1V RMS Q901 and Q902 serve as buffers and square up the signal from 0 to 5V see Figure 6 5 Selection of the oscillators as described in Section 6 3 1...

Страница 87: ...LED DS902 turns off Simultaneously Q2 goes high This pulses on off Q907 and strobes the red fail LED for OCXO 1 Relay driver Q908 can be driven by either Q2 or Q2 depending on the desired normal state...

Страница 88: ...onnector to WO511 C501 couples the RF to 50 ohm microstrip that connects the input to U501 U501 is a 6W amplifier pre driver operating in the 935 940 MHz band Power control is connected to WO505 from...

Страница 89: ...FILTER The power amplifier output is directly coupled to the forward reverse power detect board via a jumper The output then enters the circulator and exits to the low pass filter board and the anten...

Страница 90: ...10 The Wilkinson combiners provide the capability to split the drive input and combine the final outputs while maintaining isolation between the final amplifi ers Each combiner consists of two quarter...

Страница 91: ...ines cannot be changed until after the strobe is set Pin 3 HS CS EX Pin 3 is used in the 900 MHz repeater only A low enables the high stability synthesizer loop Pin 4 GROUND Pin 4 carries ground curre...

Страница 92: ...of system deviation in the transmitter The source impedance is low and the input impedance is less than 10k ohms Pin 23 GROUND Pin 23 carries ground current between the RFIB and CBP board Pin 24 UNUS...

Страница 93: ...A heat sensor rises above 50 C and goes low below 45 C 6 6 4 POWER AMPLIFIER CONNECTIONS WO 115 POWER SENSE This capacitive feedthrough pin is at 15V DC to the Power Detect Board WO 116 26 5V DC This...

Страница 94: ...en VSWR 6 1 the controller will reduce power The voltage level will be between 0V 5V and drive a 10k ohm load This line goes through the multiplexers and A D LEVEL line to the Controller for processin...

Страница 95: ...oading of data into the exciter high stability synthesizer chip U401 Pin 19 RF CLK The clock controls the Exciter synthesizer when loading The input source in the Controller is TTL with the speed dete...

Страница 96: ...in 16 HS CS RX Pin 16 is the 900 MHz Receiver high stability synthesizer chip select This synthesizer is the same circuit as used in the Exciter A low enables loading the high stability synthesizer lo...

Страница 97: ...OR COMPARATOR MUX RES FORWARD POWER Y2 Y1 Y0 Z E A1 Y6 Y5 Y4 Y3 Y2 Y1 Y0 Y2 Y1 Y0 Z E A1 Z E A2 A1 A0 ADJUST POWER RF POWER CONTROL J1 2 1 HS CS RX RF CLK RF DATA RSSI HS LK RX RX INJ RF DATA RF CLK H...

Страница 98: ...R104 charges up C106 C107 to 18Voff the line This pro vides the bias voltage required to start the controller IC U102 Once the IC turns on current is being switched on L107 A small tap winding on L107...

Страница 99: ...DC U112 Q127 Q128 CT VREF RAMP ISD OUT Q122 Q123 Q124 Q125 T108 L102 U116 Q126 U119 15V DC OUT RAMP ISD OUT 5V DC OUT U117 Q133 U120 L104 T109 Q129 Q130 Q131 Q132 U113 CT EA OUT INV U114 VCC OUT U118...

Страница 100: ...pin 3 goes high C138 R176 CR122 along with U104B creates a very narrow pulse on U104B pin 6 Q110 Q111 and Q112 level shift and buffer this pulse When the narrow pulse is presented to the timing capaci...

Страница 101: ...oltage is sampled by R215 R216 and R217 and sent to the inverting side of the error ampli fier internal to the controller IC on U112 pin 1 Volt age loop compensation is set by C174 C175 and R221 Sync...

Страница 102: ...y 0 25V P P 6 8 2 CHARGER The charger charges the batteries when the repeater is on and switch S101 is on A tap off of the main transformer of the power supply through wire W104 and a 26 5V line via w...

Страница 103: ...r 23 28 5V DC source will engage to the supply allowing the repeater to operate To perform this function a voltage com parator U101 is used to monitor the charge tap com ing from the power supply A 2...

Страница 104: ...o high when the heatsink tempera ture reaches 45 C and will go low when the tempera ture goes below 35 C This output is sent to the power supply through Q106 to turn the fan on and off 6 9 CARD RACK T...

Страница 105: ...BUS HIGH SPEED A5 J2 BOARD CONNECTOR EXTERNAL A10 TO CARD RACK P10 ALARMS A7 TO CARD RACK J1 A6 REPEATER I O J1 TO CARD RACK P11 R X A R I N G T X A R X A T X A T I P T I P 1 R I N G 1 E B E A M A M...

Страница 106: ...er from the IAC 6 11 2 MAIN CONTROLLER MICROPROCES SOR This contains the main software and control over the repeater see Figure 6 15 The main controller U27 is a VLSI Very Large Scale Integration CMOS...

Страница 107: ...storage The HSDB processor is configured by the Main Processor The internal data bus of the microprocessor has four input output ports These ports have eight lines each giving a total of 32 input out...

Страница 108: ...data to and from the CPU on the MPC memory storage on each card and peripheral devices in and out of the MAC and IAC Pin 15 MREQ A memory request line operates in conjunction with the Read Write lines...

Страница 109: ...LECT J2 is jumpered to select either the Flash memory or the EPROM memory Flash memory is ultra fast data storage The normal setting is pin 1 to pin 2 Pin 1 12V Pin 2 U25 pin 1 Vpp Pin 3 5V 6 11 8 J3...

Страница 110: ...and limiter with pre emphasis 6 12 2 AUDIO DATA MICROPROCESSOR This Audio Data microprocessor is on the MAC card and is used to decode LTR data received from the mobiles The LTR data is applied to U1...

Страница 111: ...applied to a bridge rectifier The difference between bridge rectifier out puts is applied to the inputs of U123B The output of U123B is positive going pulses These pulses are applied to U123C which is...

Страница 112: ...fier U120A sets the gain of the signal and the output is routed to Voter Audio Mute Gate U115A The gate is controlled by A D processor U111 latch U108 If the gate is enabled the audio goes to the Rece...

Страница 113: ...U153A passes the signal to Transmit Option Gate U158C and Level Detect Gate U159A to Audio Data Test Point J100 The other gate is the Transmit Audio Gate U116C This gate is also controlled by A D pro...

Страница 114: ...and turns the tone generator on and off to create the Morse Code From the tone gen erator the signal is fed to bandpass filter U129A This filter passes the 800 Hz fundamental present in the signal Th...

Страница 115: ...55 When enabled the FSK signal is passed to voice amplifier U120B and Receive Voice To Backplane gate U115C to the Controller Backplane The FSK input from the Switch is applied to dif ferential amplif...

Страница 116: ...The CIM controls the repeater with restart enable and dis able executes requests to read and write to the repeater s memory and tells the repeater transmit code hang or send turn off Pin 23 SWITCH RX...

Страница 117: ...modu lation of the Exciter with out any filtering This input is not used at this time Pins 13 26 UNUSED Pin 27 RX WB AUDIO The Receive Wide Band Audio from the Receiver audio demodulator through the R...

Страница 118: ...and 4 output contacts The 4 inputs can be disabled energized or de energized The 4 output relays are dry contacts that have a 2A rating and can be either normally open or normally closed The electrom...

Страница 119: ...alert the system owner when an alarm occurs 6 13 5 ALARM FUNCTIONS The alarms can be configured in various modes to alert the system owner to conditions and hazards with the equipment and the repeater...

Страница 120: ...om a connection to an external device as a specific alert condition Pin 9 SQUELCH ENABLE This is an output to rear connector J1 It can be configured for inverted output non inverted output or logic co...

Страница 121: ...ns 53 55 UNUSED Pin 56 THERMAL SENSOR The Thermal Sensor monitors the PA tempera ture and creates an alarm condition if the temperature exceeds the limit Pin 57 POWER SWITCH Pin 57 turns the voltage f...

Страница 122: ...bility synthe sizer chip select A low enables loading the high sta bility synthesizer loop Pins 19 21 UNUSED Pin 22 BUF RX WBAND This is buffered Receive Wide Band Audio from the Receiver audio demodu...

Страница 123: ...ft register could be connected to this pin 6 13 8 J500 A D LEVEL TEST POINT 20 lines of the possible 24 of RF functions sam pled are multiplexed to the Controller through this pin using three multiple...

Страница 124: ...CIRCUIT DESCRIPTION 6 52 March 1999 Part No 001 2009 600...

Страница 125: ...CIRCUIT DESCRIPTION 6 53 March 1999 Part No 001 2009 600 Figure 6 23 MAIN PROCESSOR CARD BLOCK DIAGRAM...

Страница 126: ...CIRCUIT DESCRIPTION 6 54 March 1999 Part No 001 2009 600 Figure 6 24 MAIN AUDIO CARD LOGIC BLOCK DIAGRAM...

Страница 127: ...CIRCUIT DESCRIPTION 6 55 March 1999 Part No 001 2009 600 Figure 6 25 MAIN AUDIO CARD AUDIO BLOCK DIAGRAM...

Страница 128: ...CIRCUIT DESCRIPTION 6 56 March 1999 Part No 001 2009 600 Figure 6 26 INTERFACE ALARM CARD BLOCK DIAGRAM...

Страница 129: ...equency critical adjustments should be attempted until the oscillator frequency has stabilized 7 2 RECEIVER ALIGNMENT Refer to Figure 7 1 for component locations Refer to Figure 7 9 for equipment need...

Страница 130: ...or 2V DC 0 05V DC on J201 pin 9 TP4 7 Measure the distortion on pin J201 pin 9 TP4 analog tuning meter is preferred 8 Tune C207 L209 L211 and L225 for peak voltage on J201 pin 7 TP3 Decrease the gener...

Страница 131: ...Program the Transmit Channel 2 Use the Turn on carrier button to key the Exciter 3 Tune VCO helical L404 for 4 5V 0 05V on U403 pin 6 TP1 4 Measure the Power Output of the Exciter at J402 Reading sho...

Страница 132: ...odulation analyzer to J402 2 Press the FM and 3 kHz LPF switches of the modulation analyzer 3 Inject a 1 kHz sine wave with a level of 400 mV RMS into P100 pin 32 on the MAC NOTE This test changes the...

Страница 133: ...tify performance of Section 7 4 2 adjustments Replacement of active components within the power control circuitry of the RF Interface Board would require Section 7 4 2 adjustments Section 7 4 2 adjust...

Страница 134: ...the load cable from A8 2 Use the Turn on carrier button to key the PA NOTE This will not harm the PA 3 Adjust Reverse Power Calibration Pot R680 for equal voltages on W126 and W121 on the RFIB or for...

Страница 135: ...AL ADJUSTMENT 6 Use the Turn on carrier button to key the PA 7 Adjust Forward Power Calibration Pot R663 for 160W 0 1 dB 3 5W 8 Verify Output 1 is within 20 of Output 2 and Out put 3 is within 20 of O...

Страница 136: ...R AMPLIFIER ALIGNMENT POINTS Figure 7 5 RF INTERFACE BOARD ALIGNMENT POINTS A8 R680 R663 R701 R702 Q702 Q701 R703 R730 Q502 Q704 Q703 R716 R717 U501 WO510 J101 J104 U108 R170 R171 U104 R150 R106 R76 J...

Страница 137: ...PEATER TO CIM TEST SETUP RED WHITE BLACK WHITE BLACK GREEN WHITE BLACK GREEN RED WHITE BLACK INCLUDED IN 2000 SERIES SERVICE KIT 250 2000 230 SWITCH RNT C I M TXS RXA RXA M A C REPEATER LINK LINES AC...

Страница 138: ...LOAD 50 OHM POWER METER 40 dB THRULINE ATTENUATOR COMMUNICATIONS SERVICE MONITOR RF INPUT R236 J104 J101 J102 J100 J103 J502 J501 J500 S1 J1 CR3 CR4 CR5 CR2 CR1 DS1 GRN YEL YEL RED RED PROG JACK RESET...

Страница 139: ...SETUP J401 J201 J402 RFIB COMMUNICATIONS SERVICE MONITOR 20 dB TM OCXO2 DELTA F OUTPUT AC DC OCXO1 OCXO 2 INTERRUPT OCXO 1 INTERRUPT INTERRUPT DC BACKUP HP 334A OSCILLOSCOPE AC VOLTMETER VOLTMETER DC...

Страница 140: ...rt No 001 2009 600 Figure 7 10 EXCITER TEST SETUP J401 J201 J402 RFIB OSCILLOSCOPE DC VOLTMETER VOLTMETER AC HP 8901A MODULATION ANALYZER 10 dB FREQUENCY COUNTER 10 dB POWER CABLES 36 PIN RIBBON CABLE...

Страница 141: ...TENUATOR THRULINE 40 dB HP 436A POWER METER 50 OHM DUMMY LOAD B B B B C E B B B B C E B B B B C E R236 J104 J101 J102 J100 J103 J502 J501 J500 S1 J1 CR3 CR4 CR5 CR2 CR1 DS1 GRN YEL YEL RED RED PROG JA...

Страница 142: ...s and connect via extension cables for some of the tests or adjustments NOTE Unless specifically stated otherwise all mea surements are to be done per the latest TIA docu mented procedures All audio g...

Страница 143: ...R236 for 2 8V RMS 4 Set the RF generator output for 5 dB SINAD 5 Adjust R234 on the MAC so the Receiver just squelches 6 Increase the RF generator output until the Receiver unsquelches Reading shall b...

Страница 144: ...les into J100 J103 and connect to an AC voltmeter 4 Use the Turn on carrier button to key the transmit ter 5 Adjust R305 for 0 dBm 775 mV RMS 6 Use the Turn on carrier button to unkey the trans mitter...

Страница 145: ...smitter 2 Deviation should measure between 750 Hz and 1250 Hz 3 Use the Turn on carrier button to unkey the trans mitter Local Speaker Microphone Check 1 Plug a Speaker Microphone into J101 J102 of th...

Страница 146: ...F 2 Adjust the RF generator for 100 V modulated with a 1 kHz tone at 1 5 kHz deviation 3 Connect a balanced AC voltmeter with a 600 ohm input impedance between balanced lines RXA and RXA on J2 located...

Страница 147: ...Setting 1 Set MAC S100 all Sections OFF S101 Sections 2 3 4 OFF 1 ON see Figure 7 15 2 Inject a 1 2 kHz tone from a balanced 600 ohm source at the level determined by the type of line used into TXA an...

Страница 148: ...oice Audio To Switch is completed 1 Set MAC S100 all Sections OFF S101 Sections 2 3 4 OFF 1 ON see Figure 7 15 2 Connect a balanced AC Voltmeter with a 600 ohm input impedance between balanced lines R...

Страница 149: ...Normal Operation mode 3 Key the radio several times on the programmed Sys tem Group Access should occur every time Proper Tx Rx antenna connections are assumed Alarm Test 1 The repeater is now in Nor...

Страница 150: ...MAC adjust R239 for the type of line used Leased Line Direct Connect default 12 dBm 194 mV RMS Microwave T1 optional 28 dBm 31 mV RMS 7 7 4 VOICE AUDIO FROM SWITCH 1 On the MAC set S100 and S101 all...

Страница 151: ...01 section 1 ON see Figure 7 23 2 On the CIM in the Switch generate an alignment tone set S5 to a value of 8 3 On the CIM adjust R86 at TP4 for the type of line used Leased Line Direct Connect default...

Страница 152: ...s1 until the relay disengages the LED lights no voltage is present at the active load This voltage will be 31V DC 0 5V 6 Decrease VS1 until the relay engages the LED goes out voltage is present at the...

Страница 153: ...TEST PROCEDURES 7 25 March 1999 Part No 001 2009 600 Figure 7 25 BATTERY CHARGER TEST SETUP LM335 Vs2 0 40V 3A POWER SUPPLY B B 023 2000 830 BASIC BOARD MODULE TEMP FAN CONTROL ENABLE ON OFF ACTIVE L...

Страница 154: ...5 4 3 2 1 RXA RXA EB EA RXS RXS MB MA TXA TXA TXS TXS 6 5 4 3 2 1 6 5 4 3 2 1 RXA RXA EB EA RXS RXS MB MA TXA TXA TXS TXS 6 5 4 3 2 1 6 5 4 3 2 1 VIO GRN GRN VIO VIO BLU BLU VIO YEL BRN BRN YEL RXA R...

Страница 155: ...EL SLT SLT YEL VIO BLU BLU VIO VIO ORN ORN VIO VIO GRN GRN VIO VIO BRN BRN VIO VIO SLT SLT VIO 1 28 29 30 31 32 33 34 9 8 7 6 5 4 3 2 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 50 49 48 47 46 45...

Страница 156: ...L TX MOD LEVEL TX DATA 15 TX AUDIO 16 TX AUDIO MAIN AUDIO FROM RNT FROM RNT SEC AUDIO FSK TO RNT SEC AUDIO TO RNT P101 J101 J102 GND A D LEVEL TEST POINT ON OFF VOL SPEAKER MIC SPEAKER LOCAL MIC LOCAL...

Страница 157: ...R4 J1 1 7A 2 6 8B S1 J2 1 2 3 1 2 14 13 J3 GRN YEL YEL RED RED COMPUTER I O PROGRAMMING CONNECTOR RESET ON ON S3 1 2 3 J5 1 2 3 J6 CR5 CR3 76800 38400 19200 9600 4800 2400 1200 11 059 12 HSDB MULTI NE...

Страница 158: ...504 CR505 CR502 CR503 CR501 S503 S501 1 4 5 8 1 8 P500 P501 1 17 32 16 32 64 1 33 4 5 8 1 S502 4 5 J500 S500 1 4 5 8 J503 J504 1 4 J505 ALARM 3 ALARM 4 ALARM 2 ALARM 1 5V 15V GND 2 3 5V 15V GND 2 3 5V...

Страница 159: ...its 1 PPM tolerance 8 2 SYNTHESIZER SERVICING 8 2 1 INTRODUCTION Synthesizer malfunctions can be caused by no VCO output or the VCO is unlocked The VCO can be unlocked due to a bad synthesizer chip a...

Страница 160: ...In The operation of the N and A counters can be observed by monitoring pins 16 and 19 Pin 16 fV equals fin 64N A 12 5 kHz if the synthesizer is locked Pin 9 is the modulus control signal Figure 8 1 L...

Страница 161: ...50 0125 1056 x 64 67 644 67 584 60 Example Channel 200 transmit A Cntr Div No 937 500 0125 1171 x 64 75 000 74 944 56 8 3 RECEIVER SERVICING To isolate a receiver problem to a defective sec tion start...

Страница 162: ...o do their own repairs see Sections 9 and 10 Figure 8 3 POWER SUPPLY REAR VIEW Figure 8 4 POWER SUPPLY FRONT VIEW A B C 1 2 3 4 5 6 7 8 9 10 11 12 28V GND 15V AC FAIL THERMAL SENSE ON OFF GND GND 5V 5...

Страница 163: ...te the value and the color of this letter or number to indicate the multiplier Japanese EIA Standard This uses a letter to indicate the value followed by a number to indicate the multiplier Example 15...

Страница 164: ...1 1 10 8 Red 2 2 100 9 Orange 3 3 1000 0 Yellow 4 4 10 000 1 Green 5 5 100 000 2 Blue 6 6 Violet 7 7 Gray 8 8 White 9 9 0 1 6 9 0 1 8 0 01 3 1k 4 10k 5 100k 6 1M 7 10M 2 100 1 10 0 0 Multiplier Value...

Страница 165: ...ium BeO Inhalation of dust or fumes may cause serious chronic lung disease Refer to the Material Safety Data Sheets for further details 8 8 GRAFOIL REPLACEMENT PROCEDURE When replacing a device that u...

Страница 166: ...SERVICING 8 8 March 1999 Part No 001 2009 600...

Страница 167: ...0 MHz 75W REPEATER ASSEMBLY PART NO 023 2009 932 A 002 895 MHz drop in circulator 585 0590 005 A 004 PA Rx Tx 20 cond ribbon 023 2000 190 A 005 PA Rx Tx 20 cond ribbon 023 2000 190 A 008 N ST BK cable...

Страница 168: ...HW0045 8 x 0 02 lockwasher int CPS 596 9119 028 J 001 2 pin lock receptacle 22 515 9032 232 J 002 2 pin lock receptacle 22 515 9032 232 SYMBOL PART NUMBER DESCRIPTION NUMBER Q 502 60W 800 MHz 24V MRF8...

Страница 169: ...21 PA slide 032 0758 015 MP022 Front door 032 0758 020 MP024 Slide lock cam 537 9007 012 MP025 Card guide 4 5 574 9015 006 MP026 PA conn floating plate 017 2226 020 MP028 Flexible grommet 574 0001 030...

Страница 170: ...O 1206 chip 510 3602 390 C 107 2 2 F 20V tantalum SMD 510 2626 229 C 108 018 F 10 X7R 0805 chip 510 3605 183 C 109 001 F 5 NPO 1206 chip 510 3602 102 C 110 1 F 10 X7R 1206 chip 510 3606 104 C 111 047...

Страница 171: ...3k ohm 5 1206 SMD 569 0115 433 SYMBOL PART NUMBER DESCRIPTION NUMBER R 065 10k ohm 5 1206 SMD 569 0115 103 R 066 43k ohm 5 1206 SMD 569 0115 433 R 073 10k ohm 5 1206 SMD 569 0115 103 R 074 1k ohm 5 12...

Страница 172: ...569 0115 223 R 164 22k ohm 5 1206 SMD 569 0115 223 R 165 22k ohm 5 1206 SMD 569 0115 223 R 166 22k ohm 5 1206 SMD 569 0115 223 R 167 1k ohm 1 1206 SMD 569 0111 301 R 168 10k ohm 5 1206 SMD 569 0115 10...

Страница 173: ...309 C 208 33 pF 5 NPO 1206 chip 510 3602 330 C 209 8 2 pF 5 NPO 1206 chip 510 3602 829 C 210 6 8 pF 5 NPO 1206 chip 510 3602 689 C 211 01 F 10 X7R chip 510 3606 103 C 212 01 F 10 X7R chip 510 3606 10...

Страница 174: ...C 304 27 pF 5 NPO 1206 chip 510 3602 270 C 305 01 F 10 X7R 1206 510 3606 103 C 306 18 pF 5 NPO 1206 510 3602 180 C 307 100 pF 5 NPO 1206 510 3602 101 SYMBOL PART NUMBER DESCRIPTION NUMBER C 308 4 7 F...

Страница 175: ...542 0015 004 L 222 2T 22 AWG 0 05 ID SMD air 542 0015 002 L 223 Helical coil 016 2186 204 L 224 Helical coil 016 2186 204 L 225 0 9 H variable inductor 7mm 542 1012 008 SYMBOL PART NUMBER DESCRIPTION...

Страница 176: ...mer 562 0112 502 R 265 1k ohm 5 1206 SMD 569 0115 102 R 266 220 ohm 5 1206 SMD 569 0115 221 R 267 294 ohm 1 1206 SMD 569 0111 246 R 268 1k ohm 1 1206 SMD 569 0111 301 SYMBOL PART NUMBER DESCRIPTION NU...

Страница 177: ...30V SOT 523 1504 014 CR802 Varactor SOT 23 hyper 523 5004 002 L 803 039 H inductor SMD 542 9001 397 L 804 039 H inductor SMD 542 9001 397 SYMBOL PART NUMBER DESCRIPTION NUMBER L 805 022 H inductor SMD...

Страница 178: ...pF 5 NPO 1206 chip 510 3602 270 C 484 27 pF 5 NPO 1206 chip 510 3602 270 C 485 27 pF 5 NPO 1206 chip 510 3602 270 C 488 1 F 10 X7R 1210 510 3607 104 C 496 15 F 20V tantalum SMD 510 2626 150 C 497 100...

Страница 179: ...0115 151 R 456 680 ohm 5 SMD 1206 569 0115 681 R 457 36 ohm 5 SMD 1206 569 0115 360 R 458 130 ohm 5 SMD 1206 569 0115 131 R 459 130 ohm 5 SMD 1206 569 0115 131 R 461 8 2k ohm 5 SMD 1206 569 0115 822 S...

Страница 180: ...0 C 562 018 F 10 X7R 0805 chip 510 3605 183 C 563 6 8 F 35V tantalum SMD 510 2635 689 C 564 56 pF high Q 110 cube 510 3663 560 C 567 56 pF high Q 110 cube 510 3663 560 C 569 39 pF 5 NPO 1206 chip 510...

Страница 181: ...06 chip 510 3602 391 C 507 018 F 10 X7R chip 510 3605 183 C 508 39 pF 5 NPO 1206 chip 510 3602 390 C 509 270 pF 5 NPO 1206 chip 510 3602 271 C 510 390 pF 5 NPO 1206 chip 510 3602 391 C 511 018 F 10 X7...

Страница 182: ...C 734 56 pF 10 high Q cube 510 3663 560 C 735 56 pF 10 high Q cube 510 3663 560 C 736 6 8 F 35V tantalum SMD 510 2635 689 C 737 018 F 10 X7R chip 510 3605 183 SYMBOL PART NUMBER DESCRIPTION NUMBER C 7...

Страница 183: ...01 SYMBOL PART NUMBER DESCRIPTION NUMBER R 521 3 9k ohm 5 1206 SMD 569 0115 392 R 685 50 ohm 250W flange mt load 569 5001 003 R 701 100 ohm 20W flange mount 569 5001 001 R 702 100 ohm 20W flange mount...

Страница 184: ...m top adjust SMD pot 562 0135 502 R 664 160 ohm 5 1206 SMD 569 0115 161 R 665 10k ohm 1 1206 SMD 569 0111 401 R 666 10k ohm 1 1206 SMD 569 0111 401 SYMBOL PART NUMBER DESCRIPTION NUMBER R 667 470 ohm...

Страница 185: ...round tab 017 2210 038 MP254 M PA plate align dowel pin 013 1723 216 MP255 PA heat sink 014 0771 124 MP256 PA shield left 017 2210 026 MP257 PA shield top 017 2210 022 MP258 Right high power PA shield...

Страница 186: ...6 8 F 35V tantalum SMD 510 2635 689 C 141 1 F 5 X7R 1206 510 3609 104 C 142 1 nF 600V AC double m 510 1023 102 SYMBOL PART NUMBER DESCRIPTION NUMBER C 143 2700 F 35V aluminum 510 4075 272 C 144 2700 F...

Страница 187: ...CR107 Switching diode SOT 23 523 1504 017 CR108 Switching diode SOT 23 523 1504 017 CR110 Switching diode SOT 23 523 1504 002 SYMBOL PART NUMBER DESCRIPTION NUMBER CR111 Switching diode SOT 23 523 150...

Страница 188: ...ART NUMBER DESCRIPTION NUMBER Q 111 Si NPN amp sw SOT 23 576 0003 600 Q 112 Si NPN amp sw SOT 23 576 0003 600 Q 114 PNP switching 576 0003 612 Q 115 PNP high current SOT 223 576 0006 026 Q 116 14A 500...

Страница 189: ...1 R 172 100k ohm 5 1206 SMD 569 0115 104 R 173 16 9k ohm 1 1206 SMD 569 0111 423 R 174 1k ohm trim pot 562 0110 102 SYMBOL PART NUMBER DESCRIPTION NUMBER R 175 1 8k ohm 5 1206 SMD 569 0115 182 R 176 1...

Страница 190: ...6 SMD 569 0115 431 R 268 4 7k ohm 5 1206 SMD 569 0115 472 R 269 360 ohm 5 1206 SMD 569 0115 361 R 270 33k ohm 5 1206 SMD 569 0115 333 R 271 3 3k ohm 5 1206 SMD 569 0115 332 SYMBOL PART NUMBER DESCRIPT...

Страница 191: ...RIPTION NUMBER RV002 Metal oxide varistor 569 3503 001 W 001 Wire 1 assembly 023 2000 825 W 002 Wire 2 assembly 023 2000 826 W 003 Wire 3 assembly 023 2000 827 W 004 Wire 4 assembly 023 2000 828 W 005...

Страница 192: ...2 R 106 2k ohm 5 2512 SMD 569 0175 202 R 107 1k ohm 5 1206 SMD 569 0115 102 R 108 2k ohm 5 1206 SMD 569 0115 202 R 109 2k ohm 5 1206 SMD 569 0115 202 R 110 2k ohm 5 1206 SMD 569 0115 202 R 111 51 ohm...

Страница 193: ...06 102 C 906 150 pF 5 NPO 1206 chip 510 3602 151 C 907 150 pF 5 NPO 1206 chip 510 3602 151 C 908 01 F 10 X7R chip 510 3606 103 C 909 22 F 16V SMD tant SMD 510 2625 220 C 910 22 F 16V SMD tant SMD 510...

Страница 194: ...e header 515 7100 003 J 906 3 pin single inline header 515 7100 003 J 907 3 pin single inline header 515 7100 003 J 908 3 pin single inline header 515 7100 003 J 909 3 pin single inline header 515 710...

Страница 195: ...115 103 R 925 270k ohm 5 1206 SMD 569 0115 274 SYMBOL PART NUMBER DESCRIPTION NUMBER R 926 Zero ohm 5 1206 SMD 569 0115 001 R 927 100 ohm 5 1206 SMD 569 0115 101 R 928 150 ohm 5 1206 SMD 569 0115 151...

Страница 196: ...9 C 103 001 F 5 NPO 1206 chip 510 3602 102 C 104 220 F 25V aluminum radial 510 4225 221 C 105 15 F 20V SMD tantalum 510 2626 150 C 106 15 F 20V SMD tantalum 510 2633 150 C 107 001 F 5 NPO 1206 510 360...

Страница 197: ...ulator 018 1080 001 EP003 Crystal pin insulator 018 1080 001 EP004 Crystal pin insulator 018 1080 001 SYMBOL PART NUMBER DESCRIPTION NUMBER HW001 Panel fastener 537 0011 031 HW001 Card injector extrac...

Страница 198: ...544 2023 025 U 025 MPC boot code 023 9998 277 U 026 BCD 7 latch DIP 16 MC14495 544 3014 495 U 027 CPU v25 PLCC 84 MPD7032 544 5002 016 U 028 EEPROM PLCC32R 28C64 544 5002 412 U 030 HEX inverting Schm...

Страница 199: ...3 01 F 10 X7R chip 510 3606 103 C 174 01 F 10 X7R chip 510 3606 103 C 175 01 F 10 X7R chip 510 3606 103 C 176 01 F 10 X7R chip 510 3606 103 SYMBOL PART NUMBER DESCRIPTION NUMBER C 177 01 F 10 X7R chip...

Страница 200: ...224 C 280 022 F 5 X7R 1206 510 3609 223 C 281 820 pF 2 NPO 1206 510 3616 821 C 282 1 F 10 X7R 1206 510 3606 104 C 283 1 F 10 X7R 1206 510 3606 104 SYMBOL PART NUMBER DESCRIPTION NUMBER C 285 470 F 25...

Страница 201: ...3 330k ohm 5 1206 SMD 569 0115 334 SYMBOL PART NUMBER DESCRIPTION NUMBER R 124 1M ohm 5 1206 SMD 569 0115 105 R 125 100k ohm 5 1206 SMD 569 0115 104 R 126 100k ohm 5 1206 SMD 569 0115 104 R 127 470k o...

Страница 202: ...MD 569 0115 184 R 220 16k ohm 5 1206 SMD 569 0115 163 R 222 100k ohm 5 1206 SMD 569 0115 104 SYMBOL PART NUMBER DESCRIPTION NUMBER R 223 6 8k ohm 5 1206 SMD 569 0115 682 R 225 10k ohm 5 1206 SMD 569 0...

Страница 203: ...0115 001 R 323 Zero ohm 5 1206 SMD 569 0115 001 SYMBOL PART NUMBER DESCRIPTION NUMBER RT100 10k ohm chip thermistor 569 3013 007 S 100 8 pos DIP switch 583 5002 008 S 101 4 pos DIP switch 583 5002 00...

Страница 204: ...10 X7R chip 510 3606 103 C 530 220 F 25V aluminum radial 510 4225 221 SYMBOL PART NUMBER DESCRIPTION NUMBER C 531 01 F 10 X7R chip 510 3606 103 C 532 1000 F 25V aluminum radial 510 4225 102 C 533 01...

Страница 205: ...0115 472 R 522 10k ohm 1 1206 SMD 569 0111 401 R 523 10k ohm 1 1206 SMD 569 0111 401 SYMBOL PART NUMBER DESCRIPTION NUMBER R 524 4 7k ohm 5 1206 SMD 569 0115 472 R 525 10k ohm 1 1206 SMD 569 0111 401...

Страница 206: ...C 74HC574 544 3766 574 U 506 8 bit A D converter 544 2031 001 U 507 Bilateral switch SOIC 4066B 544 3016 066 U 508 Hex open drain buffer SO 14 544 3716 906 U 509 Quad op amp SOIC 544 2020 008 U 510 NP...

Страница 207: ...3 1 1 1 1 3 4 4 5 1R 2X R2 R3 3604 2T R25 2A 1A DIODES 523 1504 002 523 1504 012 523 1504 015 523 1504 016 523 1504 023 523 2016 180 523 2016 479 523 2016 519 523 2016 629 523 2016 919 523 5004 002 6...

Страница 208: ...SCHEMATICS AND COMPONENT LAYOUTS 10 2 March 1999 Part No 001 2009 600 Figure 10 1 RF MODULE INTERFACE CONNECTOR Figure 10 2 BACKPLANE CABLE CONNECTIONS...

Страница 209: ...L FIGURE 10 3 REPEATER REAR VIEW FIGURE 10 4 REPEATER FRONT VIEW FIGURE 10 5 OCXO DRAWER FIGURE 10 6 REPEATER CABINET EXPLODED VIEW FIGURE 10 7 GND RX TX MPC MAC IAC PA EXCITER RECEIVER RFIC 10 3 Marc...

Страница 210: ...1 6 23 7 24 8 25 9 26 10 27 11 28 12 29 13 30 14 31 15 32 16 33 17 34 A8 23 5 22 4 21 3 20 2 19 1 6 24 7 25 8 26 9 27 10 28 11 29 12 30 13 31 14 32 15 33 16 34 17 35 J101 WO 113 18 36 WO 106 WO 112 W...

Страница 211: ...9 7 6 5 4 3 2 1 P10 P10 15V 15V 25 15V ACCESSORY 24 15V ACCESSORY 26 15V FILTERED 58 15V FILTERED 7 ALARM 3 IN 39 ALARM 3 IN 8 ALARM 4 IN 40 ALARM 4 IN 9 SQELCH ENABLE 41 IAC 41 10 EXT REQ 2 42 BUF RX...

Страница 212: ...OUT 3 WO123 RF OUT 2 WO122 RF OUT 1 U104 1 8 9 16 U110 1 8 9 16 R66 R65 R64 R63 R58 R57 R60 R59 R199 R198 C119 19 20 1 2 J103 WO 142 WO 140 WO 141 WO 138 WO 136 WO 137 WO 139 19 20 1 2 J102 WO 134 WO...

Страница 213: ...110E 74HC906 U110F Y6 14 E 6 5 13 11 12 R57 10k R59 10k 1 12 14 15 Y4 Y3 Y1 Y2 3 9 10 11 Z A2 A1 A0 U105 HEF405TBTD 13 Y0 U106 HEF405TBT D R165 22k Z 3 R164 22k R163 22k R166 22k R197 10k 5V R50 4 99k...

Страница 214: ...Q207 Q210 Q211 EP6 R241 R312 R288 C328 C327 C244 C306 R242 L217 R281 C251 C248 C253 R248 C249 R243 C250 R244 R240 C254 R249 R251 R250 C252 L218 R314 C296 C297 R304 C300 C299 R303 C298 U208 C325 C206...

Страница 215: ...SCHEMATICS AND COMPONENT LAYOUTS 10 9 March 1999 Part No 001 2009 600 Figure 10 14 RECEIVE VCO COMPONENT LAYOUT...

Страница 216: ...CR801 C802 R801 C807 R802 C809 Q801 L803 C810 C811 R803 R805 R806 C812 C813 Q802 L805 R807 27pF C808 3 2 TRANSMIT VCO ONLY 2 2 2 3 3 3 3 3 3 C805 1uF 47uF C804 C806 1uF C812 C813 DESIG RX TX NOTES R80...

Страница 217: ...7 150 R275 6 8k C258 27pF L 219 018uH R274 10 6V C259 27pF C309 1pF Q209 3636 R299 36 C309 3pF C334 27pF R273 100 11 F IN TP2 C358 3 9pF 6 PD OUT C330 27pF C256 1 R271 910 6V 19 V DD R232 10k RF DATA...

Страница 218: ...C412 R420 C411 R423 C478 L401 C413 R485 R431 C419 R430 C416 R432 R433 C418 C417 C420 Q402 Q401 R418 Q404 Q403 L402 C453 R428 Y401 EP402 EP405 L403 C430 R450 C499 R434 R452 C498 R457 C431 Q406 R451 C4...

Страница 219: ...SCHEMATICS AND COMPONENT LAYOUTS 10 13 March 1999 Part No 001 2009 600 Figure 10 18 TRANSMIT VCO COMPONENT LAYOUT C814 C814 IS PLACED ON TOP OF R807...

Страница 220: ...CR801 C802 R801 C807 R802 C809 Q801 L803 C810 C811 R803 R805 R806 C812 C813 Q802 L805 R807 27pF C808 3 2 TRANSMIT VCO ONLY 2 2 2 3 3 3 3 3 3 C805 1uF 47uF C804 C806 1uF C812 C813 DESIG RX TX NOTES R8...

Страница 221: ...DJ C441 1pF Q410 3636 Q411 3636 R467 1 6k R466 1 6k R465 1 2k R468 150 C480 39pF C444 27pF C443 27pF R464 5 6k L406 039uH R463 100 C442 27pF R462 10 C434 27pF 12V C446 27pF C445 27pF R443 36 R470 330...

Страница 222: ...502 C569 R511 R510 R515 C571 R513 R512 C570 R514 C567 C552 C551 C538 C536 B C B B B E Q501 C586 C525 C526 C523 C524 C537 C588 EP505 C522 EP520 U501 C532 C516 C513 C512 C514 C504 C503 C502 C511 C515 C5...

Страница 223: ...OUT U504 78L05 V IN 6 2V SOURCE C578 018 C579 001 C581 018 8 7 6 5 V IN NC 7 NC 6 NC 5 U503 LM35D NC 2 NC 3 GND V OUT 2 3 4 1 C583 39pF U502A 2904 3 2 1 R526 301k C584 001 R525 100k R527 470 C585 018...

Страница 224: ...EP706 C722 C724 C719 C723 C718 C720 C717 C772 EP702 WO503 C762 C711 C706 EP705 EP703 EP704 C709 C710 C712 C707 C708 C705 C771 EP701 WO503A R701 WO 502A C765 C769 C761 Q502 B B B B C E C568 C552 C551 E...

Страница 225: ...7 15V 2 26V FINAL 1 26V FINAL 2 3 2 26V 2 FINAL 4 WO 515 FINAL POWER 1 WO 511 RF 1 WO 516 FINAL POWER 2 WO 512 RF 2 WO 517 FINAL POWER 3 WO 513 RF 3 WO 518 FINAL POWER 4 WO 514 RF 4 WO 521 GAIN BLOCK...

Страница 226: ...665 C673 R658 C654 C683 WO657A WO654 R663 U651 WO651 WO650 R651 R654 L651 R653 L652 C653 R655 C684 MP651 L653 CR651 CR652 WO657B WO655 WO656 R686 R667 R667 C656 C665 R684 R689 R681 R677 C677 R676 C674...

Страница 227: ...51 L654 033uH R670 160 L655 12 5nH 50 L656 039uH C667 27pF WO 656 REFLECTED POWER SENSE C665 27pF R684 470 U652A 2904 7 C678 27pF R680 5k R683 10k C679 001 R682 7 5k C682 001 R689 10k R681 160 U652B 2...

Страница 228: ...U901 C939 1 7 8 14 U902 C940 R920 R921 C941 C942 C910 C909 8 14 1 7 U904 1 7 8 14 U903 9 16 1 8 U912 9 16 1 8 U907 R913 C906 R916 R914 C905 C943 R915 C947 1 7 8 14 U910 C921 C922 1 8 9 16 U913 C946 R...

Страница 229: ...3658 15V K903 14 8 1 7 11 OCXO 2 ALARM 12 OCXO 2 ALARM 3 2 1 J907 P907 CLOSE UPON ALARM OPEN UPON ALARM R941 0 Q912 3658 5V R927 100 R928 150 DS901 OK GREEN ALARM RED DELAT F Q913 3658 5V R944 0 U914...

Страница 230: ...GURE 10 29 10 24 1 2 3 3 2 1 4 5 6 J101 S101 AC INPUT 115V AC 230V AC F101 AC FUSE 2 4 3 7 8 6 1 5 T101 CR103 CR104 CR101 CR102 C101 C102 C108 C104 C105 C112 C109 C106 R102 R101 C107 CR105 C110 WO101...

Страница 231: ...6 5 4 3 2 1 S101 115V 230V 4 3 2 10 5 6 7 8 C101 1000 C102 6 8 C103 001 2 3 U101 LM117T V IN VOUT A VOUT B ADJ 4 1 R101 2 49k C104 220 C105 15 R102 220 C106 15 13 8V C107 001 C108 2200 CR105 C109 15 1...

Страница 232: ...1 7 8 14 U15 8 14 7 R34 Z1 Z2 C18 C17 1 C16 C15 64 32 Y1 C8 C1 U14 U3 U8 9 16 8 1 20 1 11 10 1 28 15 14 C12 U10 1 14 15 28 R2 U1 15 28 1 14 A 1 2 3 4 5 6 B J1 C5 R37 R36 R20 R19 R18 R17 R38 R39 CR1 C...

Страница 233: ...2C51 21 13 10 RESET RD WR D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7 8 7 6 5 2 1 28 27 11 CS 2 4 6 8 10 12 14 13 11 9 7 5 3 1 J3 J3 U21 MC14024 2 2 2 2 2 2 2 12 11 9 6 5 4 3 RESET 2 76800 38400 1...

Страница 234: ...MR DIR 27 3 U27 11 1 U27 67 1 S1 4 V25 DATA BUS 7 0 TX FIFO U20D U8C 13 12 11 8 9 MSTB 10 U6 15 1 J1 16 1 3 2 1 C B A A13 A14 A15 U3 74HC138 4 5 G2A G2B Y2 Y1 15 14 13 G1 5V 6 19 18 17 16 15 13 12 11...

Страница 235: ...3 R288 R289 C286 C251 C254 R291 C185 R219 C183 Q102 Q101 R220 R226 C161 R225 R254 R285 R227 R223 C207 U114 1 8 16 9 U127 8 14 7 1 U117 1 8 16 9 U164 1 4 5 8 CR105 CR104 CR103 C200 R152 R153 C139 R154...

Страница 236: ...R323 R320 R271 C184 R164 R275 R161 C181 R166 C144 C145 R321 C201 R165 C142 R167 R162 C136 U118 1 8 9 16 R163 C143 C137 R159 R160 R274 C195 R168 R201 R202 R204 C273 R221 R278 R100 U151 CR111 CR112 U126...

Страница 237: ...ADDRESS LATCH U112 27C256A 8 9 10 D0 D1 D2 D3 D4 D5 D6 12 13 15 16 17 18 19 D7 11 A0 A1 A2 A3 A4 A5 A6 A7 A0 A1 A2 A3 A4 A5 A6 A7 10 9 8 7 6 5 4 3 22 OE CE 20 15V 62 15V 30 Z102 15V SOURCE WO 111 WO 1...

Страница 238: ...U162C 14 3 1 RXS S100 10 9 11 12 5 6 8 7 5V SECONDARY AUDIO TO RNT 14 RXA P100 VOICE AMPLIFIER U114D LOCAL AUDIO MUTE GATE 14 15 16 U108 18 1 LOCAL AUDIO MUTE GATE R254 47k R236 10k C299 01 C295 220...

Страница 239: ...k U127B 2904 7 6 5 R308 909k C298 0056 R309 25 5k C297 0047 U127C 3303 8 9 10 CR112 2 4V CR111 2 4V R144 1k U127D 3303 14 13 12 CR103 R279 150k R280 150k 5V 5V CR104 CR105 R145 150k R138 121k TX AUDIO...

Страница 240: ...4 R550 R549 R545 R552 R551 R563 C516 R568 R554 R567 R553 U518 U518 S502 8 5 1 4 1 2 3 1 3 4 6 7 1 8 14 J503 CR536 CR527 CR537 C504 CR511 CR510 U521 1 10 11 20 WO 503 WO 504 WO 505 R547 R561 C514 C515...

Страница 241: ...D 58 15V L501 C530 220 C529 01 FILTERED R578 2 7k CR525 15V R575 2 7k CR523 15V ACCESSORY ACCESSORY 24 ACCESSORY 25 15V 15V 15V ACCESSORY F501 1A CR526 C532 1000 C531 01 15V FILTERED ALARM 2 OUT 20 14...

Страница 242: ...FIGURE 10 41 10 36 F1 F2 F3 P9 P13 P15 P17 P2 P4 P6 P8 P7 P5 P3 P18 P16 P14 P12 P1 1 33 32 64 1 17 32 16 1 33 32 64 1 17 32 16 1 33 32 64 1 17 32 16 1 33 32 64 1 17 32 16 1 33 32 64 1 17 32 16 1 33 32...

Страница 243: ...March 1999 Part No 001 2009 600 10 37 BACKPLANE COMPONENT LAYOUT CABLE SIDE FIGURE10 42 1 2 25 26 P10 1 2 33 34 J2 1 2 33 34 J1 1 6 P11 WO4 WO1 WO2 WO6 WO7 WO3 WO17 WO16 WO13 WO5 WO8...

Страница 244: ...OUT 1 COM 49 COM 50 ALARM 3 OUT ALARM 4 OUT TX DATA IN RX VOICE TX VOICE BUF RX WBAND COMM 6 P10 TO GREEN CONNECTOR J1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 PTT ENABLE T...

Страница 245: ...03 R263 R223 R226 R259 C175 R221 C201 C200 U113 R264 R162 R185 R221 R221 R187 R189 R188 R138 R139 C151 R118 R135 R230 C157 C234 C231 R273 R190 R158 R137 R136 C154 C155 R184 R170 R171 R169 U106 R184 R1...

Страница 246: ...W113 W111 EP103 EP104 C106 C101 C205 U114 R254 C209 L105 T109 C186 CR132 Q132 CR126 Q125 U111 T108 L104 CR135 C188 CR129 C187 C166 L102 W109 C165 R216 L103 CR141 W115 W107 C169 C163 J102 J101 L101 CR1...

Страница 247: ...0 1 8 3 12 16 18 19 20 15 14 R272 51 C207 0022 C210 0022 67V TO BATTERY BACK UP EP106 R166 10 R167 10 R168 10 C142 001 CR121 CR128 L101 TO SYNC CIRCUIT U104 Q110 Q111 Q112 2 APPROXIMATELY 100V PEAK C1...

Страница 248: ...O 115 HIGH CURRENT OUT WO 107 15V DC OUTPUT WO 108 GROUND R211 12 4k R212 2 26k C220 1 U116 TL431ID 8 CATHODE 7 6 5 ANODE A ANODE B NC A REF ANODE D ANODE C NC B R214 1k 1 2 3 4 Q126 3612 R213 200 C16...

Страница 249: ...AYOUT FIGURE 10 48 EARTH GROUND AC HOT NEUTRAL CHASSIS GROUND F1 20A C1 22 C2 22 L1 1 8uH C3 0022 C4 0022 L2 8 67nH R1 1M C5 22 RV2 RV1 BRN RED BLU BLK GRN YEL WO1 AC HOT WO5 POS OUT WO3 NEUTRAL WO4 N...

Страница 250: ...116 F101 W102 R121 C116 C124 R124 C125 U102 R115 C103 C107 R147 R146 R112 R112 R119 R118 U103 R151 R150 C115 R149 R144 R148 R145 8 5 4 1 CR104 1 4 5 8 1 4 5 8 U104 R136 R137 CR117 CR114 C134 C133 R116...

Страница 251: ...26V C101 01 24V HIGH CURRENT TRACE 30A BATTERY 67V L101 C119 220 26V C105 1000 R136 3 3k R137 3 3k 2 VIN U107 LM317M GND V OUT 3 1 C106 1 R138 240 R139 3 3K R140 1k C109 1 C110 6 8 C111 1000 Q104 202...

Страница 252: ...NNECTOR AND SCHEMATIC FIGURE 10 52 U101 2 7k GCELL IN 1 COMP IN COMP OUT GCELL IN 2 RECT IN 2 EXP OUT RECT IN 1 I REF COMP CAP2 COMP CAP1 V REF EXP CAP 4 7 12 39k 4 7 1 1 1 6 13 11 5 3 001 10 9 8 4 2...

Страница 253: ...54 POWER CABLE CONNECTOR AND SCHEMATIC 9 7 12 11 10 8 6 5 4 3 2 1 A B C J2 1 2 3 4 5 6 7 8 9 REPEATER BACKPLANE AC FAIL IN POWER SWITCH THERMAL SENSOR 15V GROUND GROUND 5V TO POWER HARNESS GROUND 15V...

Страница 254: ...COMP IN COMP OUT GCELL IN 2 RECT IN 2 EXP OUT RECT IN 1 I REF COMP CAP2 COMP CAP1 V REF EXP CAP 4 7 12 39k 4 7 1 1 1 6 13 11 5 3 001 10 9 8 4 2 1 3 9k SA577D 4 7 4 7 4 7 C103 C104 C109 C110 R102 R101...

Страница 255: ...5 896 4875 40 40 935 5000 896 5000 41 41 935 5125 896 5125 42 42 935 5250 896 5250 43 43 935 5375 896 5375 44 44 935 5500 896 5500 Program FCC Repeater Repeater Channel Channel Transmit Receive Number...

Страница 256: ...936 6500 897 6500 133 133 936 6625 897 6625 134 134 936 6750 897 6750 135 135 936 6875 897 6875 136 136 936 7000 897 7000 Program FCC Repeater Repeater Channel Channel Transmit Receive Number Number...

Страница 257: ...375 228 228 937 8500 898 8500 229 229 937 8625 898 8625 230 230 937 8750 898 8750 231 231 937 8875 898 8875 232 232 937 9000 898 9000 Program FCC Repeater Repeater Channel Channel Transmit Receive Num...

Страница 258: ...375 324 324 939 0500 900 0500 325 325 939 0625 900 0625 326 326 939 0750 900 0750 327 327 939 0875 900 0875 328 328 939 1000 900 1000 Program FCC Repeater Repeater Channel Channel Transmit Receive Num...

Страница 259: ...7625 900 7625 382 382 939 7750 900 7750 383 383 939 7875 900 7875 384 384 939 8000 900 8000 385 385 939 8125 900 8125 386 386 939 8250 900 8250 387 387 939 8375 900 8375 388 388 939 8500 900 8500 389...

Страница 260: ...900 MHz CHANNEL FREQUENCY CHART A 6 March 1999 Part No 001 2009 600 This page intentionally left blank...

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