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Patriot RITRON SST-442, Maintenance And Operating Manual, Page: 36 / 37

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Patriot RITRON SST-442 Maintenance And Operating Manual Download Page 36

SCHEMATIC REFERENCE PARTS LIST

SST-442

33

SPEAKER

SP301

05500045

SPEAKER, 45MM, 1W, LOW PROFILE SST/RTX

0

0

0

Bottom

SWITCHES

SW301

05100042

SWITCH SPST MOMENTARY MINI PC 260GM

268

4587

180

Top

SW302

05100042

SWITCH SPST MOMENTARY MINI PC 260GM

788

4588

180

Top

SW303

05100046

SWITCH, TACT LO PROFILE RT ANGLE 160gf

82

3097

270

Top

SW304

05100046

SWITCH, TACT LO PROFILE RT ANGLE 160gf

82

3948

270

Top

TRANSFORMER

T101

05600018

455KHZ IF TRANSFORMER (5MM)

128

1822

180

Top

CRYSTAL

Y302

23050003

TCVCXO, 14.400 MHz, 1.5 PPM, VC=30 PPM/V

146

837

90

Top

FILTERS

YF101

02301403

43.650 MHz Crystal /-6.0KHz UM-1

44

3524

90

Top

YF102

02301013

FILTER,CERAMIC,/-7.5KHz,6 POLE

249

1614

90

Top

HARDWARE

1750270A

PCB, ML4 FR4 5UPM, .062 MIX, SST-442

25602500

CRYSTAL SUPPORT, RUBBER PAD, SMALL/UM-1

06001010

#24 AWG STRANDED WIRE; RED (INCHES)

06001011

#24 AWG STRANDED WIRE; BLACK INCHES

06001023

#28 AWG STRANDED WIRE;GREEN INCHES

06001029

#28 AWG STRANDED WIRE; BLUE INCHES

25105500

SHIELD, SST-PLUS SYNTHESIZER

25603000

FOAM, MOUNTING, SPEAKER,SST

25603900

SPACER, MIC FOAM, SST

25605700

MICROPHONE HOLDER, SST-PLUS

ANTENNA

AFS-450

 ANTENNA UHF MOLDED, 450-470 REG LEN SST

MAIN CASE ASSEMBLY

13250000

CASE W/INSERT, PLASTIC, SST BLACK

13578000

DOOR, BATTERY, PLASTIC, SST 2-PC

13588000

LATCH, BATTERY DOOR, PLASTIC SST 2-PC

25106400

BATTERY DOOR HINGE RETAINER

25201500

RETAINER, PLASTIC, PTT, SST

25400600

BUSHING, THREADED, PLATED, ANTENNA SS

25603300

GRILLE CLOTH, SPEAKER, SST

25603400

DUAL JACK PLUG, RUBBER,SST

25606200

HINGE, BATTERY DOOR, SST

25800500

ACTUATOR, RUBBER,PTT,SST

25800600

ACTUATOR, RUBBER, TACT, SST

02802026

NUT; KNURLED; M4PO.5;/2.5MM JACK

02802027

NUT; KNURLED; M6PO.5/3.5MM JACK

28112401

SCREW 4-40 X 1/4" PHFLST

28233G03

KNURLED NUT, ANTENNA, JMX

CASE BOTTOM ASSEMBLY

13564000

CASE, BOTTOM, PLASTIC, SST 2-PC

2142D021

CONNECTOR, CABLE ASSEMBLY, 2-POS, SST+

25400800

SPRING CONTACT, BATTERY, SST W/O TABSC

25400900

CONTACT BATTERY SST-PLUS (POLARIZED)

25604800

SPACER, PCB, FOAM, SST 2-PC

BELT CLIP

25201600

BELT CLIP, PLASTIC, SST  BLACK

2811B600

SCREW 6-32 X 1/4" PHTRST

Summary of Contents for RITRON SST-442

Page 1: ...ical standards of the applicable rule part s This includes but is not limited to the following items required under FCC Part 2 1033 c 2 FCC Identifier 3 A copy of the installation and operating instru...

Page 2: ...D PROGRAMMABLE HANDHELD RADIO MAINTENANCE REPAIR OPERATING MANUAL FOR USE BY AUTHORIZED SERVICE MAINTENANCE PERSONNEL ONLY SST 442 MRM REV A COPYRIGHT 2001 RITRON INC ALL RIGHTS RESERVED RITRON JOBCOM...

Page 3: ...g Frequency Table 13 Table 2 Quiet Call Codes and Frequencies 13 COMPUTER SOFTWARE COPYRIGHTS 13 PC COMPUTER PROGRAMMING 13 Programmable Features 14 Description of Features 15 TOPIC PAGE THEORY OF OPE...

Page 4: ...ng iron for soldering CMOS circuitry 7 Lead straightening tools When straightening CMOS leads provide ground straps for the tool used PC Board Removal Special Tool RITRON recommends using a knurled nu...

Page 5: ...et Also provides cable connection for PC programming Microphone PTT 2 5 mm for external Chg Jack speaker microphone headset or RITRON model BC A wall charger CONTROLS Push Button Controls On Volume Up...

Page 6: ...earphone jack Receiving System Dual conversion superheterodyne I F System 1st 43 65 MHz 2nd 450 KHz L O Injection Low side QC DQC Decode Time per EIA Standards BATTERY Battery Pack 7 2 VDC 800 mAH rec...

Page 7: ...propriate methods Safety Standards In 1991 the Institute of Electrical and Electronics Engineers IEEE and in 1992 the American National Standards Institute ANSI updated the 1982 ANSI standard for safe...

Page 8: ...apacity PRECAUTIONS Use only RITRON supplied chargers other chargers might cause fire explosion or other damage to the radio Do not fast charge a brand new battery pack Otherwise the battery might be...

Page 9: ...may never fully discharge the battery pack during normal use Achieve maximum battery life by fully discharging the battery periodically to condition it After exposing the battery pack to many cycles...

Page 10: ...y Jack This jack connects speaker audio to optional accessories such as a remote speaker microphone or an earphone For accessories that have a two plug connector the smaller plug is inserted into the...

Page 11: ...means that squelch is turned off Release the buttons To restore squelch press and hold both of the volume buttons until the radio sounds a beep or double beep Monitor To monitor the channel press one...

Page 12: ...ort beep every minute to alert the user that the battery will soon need recharging Once the battery charge drops below the required operating voltage the radio emits a long low tone and turns itself o...

Page 13: ...suspect Charge the suspect battery as recommended in this manual Then if the charged original battery cannot power the handheld try charging again with another charger If the battery still doesn t ho...

Page 14: ...it a series of beeps pause and then begin another series Four series of beeps will be heard with each series representing a digit The number of beeps in a series is equal to the digit See CHANNEL READ...

Page 15: ...rect digit Turn the radio off check the digits you are attempting to enter then start over again 4 If you make a PTT click error turn the radio off then on and start over 5 If the radio does not emit...

Page 16: ...ter with Windows 95 or later The computer must have an RS 232 serial port and a minimum of 2MB available on the hard disk drive for installation COMPUTER SOFTWARE COPYRIGHTS The RITRON Inc products de...

Page 17: ...xed beep volume or for a beep volume that is adjusted with the Volume controls If fixed beep volume is selected the fixed level can be set between 0 100 Busy Channel Transmit Inhibit This keeps the ra...

Page 18: ...g radio beeps at the end of each received transmission Squelch Tightener This feature reduces distant co channel or other interference for channels that are not programmed with Quiet Call Carrier sque...

Page 19: ...cycle time is programmable using the PC Programming Kit The 5V SW power strobe output at Pin 10 of IC301 controls Q306 which switches the regulated 5 VDC to the audio processing circuitry and the synt...

Page 20: ...06E passes TX audio through to the VCO modulation input at R416 TX audio is applied to varactor CR403 to modulate the VCO TX audio is also routed to the Pin 1 input of TCVCXO reference oscillator Y302...

Page 21: ...rcuit configuration with bilateral switches IC304A B and C permits the use of the same audio filtering system for both transmit and receive modes After R114 and C130 remove the 450 KHz element from th...

Page 22: ...rogrammed to hold the transmitter on after the PTT switch has been released to allow tone related turn off codes for squelch tail elimination Power Amplifier Q203 Q204 and associated components amplif...

Page 23: ...ncy of the VCO oscillator used in both transmit and receive The output is HIGH in transmit and LOW in receive T R output is also used to switch supply voltage to the transmit and receive circuits 12 C...

Page 24: ...s test set to the BNC connector on the SST SRVBD test assembly 4 Turn on the radio to place it in operating mode 5 From the PC Programmer on screen menu select Tune Radio to display the Alignment scre...

Page 25: ...nd Voice Only Narrow Band Voice Tone Wide Band or Voice Tone Narrow Band by pressing the desired option button 4 Press the Tune button on the Alignment screen to activate the transmitter 5 If adjustme...

Page 26: ...performed by the factory selection of fixed capacitor C413 Do not attempt to adjust the synthesizer control unless a key component in the synthesizer has been replaced Key components do not include th...

Page 27: ...5 0 5 0 CR305 1 GND GND GND Voltage clamp 2 5 0 5 0 5 0 3 0 0 0 0 0 0 CR306 1 2 4 2 4 2 4 Voltage clamp 2 NC NC NC 3 2 4 2 4 2 4 CR307 C 7 5 7 5 7 5 Reverse volt protection A 0 0 RX audio amp out CR4...

Page 28: ...D GND GND 5 0 0 3 7 0 0 6 0 0 7 5 0 0 7 0 0 3 7 0 0 8 NC NC NC REF PIN TX RX SB DESCRIPTION IC308 1 2 4 2 4 Tone low pass filter 2 2 4 2 4 3 GND GND GND 4 5 0 5 0 5 2 4 2 4 6 2 4 2 4 7 5 0 5 0 8 3 2 3...

Page 29: ...8 Battery V switching 2 7 5 7 5 7 5 3 7 5 7 5 7 5 Q 306 1 4 3 4 3 5 0 5V switching 2 5 0 5 0 5 0 3 5 0 5 0 Q 307 1 0 0 5 0 0 0 Audio amplifier enable 2 0 0 4 3 0 0 3 7 5 6 8 7 5 Q 308 1 7 5 6 8 7 5 A...

Page 30: ...HIP CAP 350 1364 0 Bottom C126 15119104 1uF X7R 0805 25V CERAMIC CHIP CAP 441 1542 0 Bottom C127 15119104 1uF X7R 0805 25V CERAMIC CHIP CAP 61 2203 0 Bottom C128 15119104 1uF X7R 0805 25V CERAMIC CHIP...

Page 31: ...AMIC CHIP CAP 82 2765 180 Bottom C335 15180101 100pF CAPACITOR CHIP 0402 COG 5 366 2880 270 Bottom C336 15181332 0033uF CAPACITOR CHIP 0402 X7R 5 10 454 3156 90 Bottom C337 152B6106 10uF 10V 3 4 X 2 8...

Page 32: ...CHIP 0402 COG 5 1053 1576 180 Top C422 15110100 10PF NPO 0805 50V CHIP CAP 1119 1512 180 Top C423 151101A0 1 0PF NPO 0805 50V CHIP 1256 1400 0 Top C424 151108A2 8 2PF NPO 0805 50V CHIP 1187 1252 270 T...

Page 33: ...03 18414104 4 5T AIRCOIL 24AWG 0625 ID RHH SMT 1478 2880 180 Top L204 18433102 2T AIRCOIL SMT 5 0nH 120 X 145 1591 3250 90 Top L205 18110103 CHIP INDUCTOR 10uhy 1386 3262 90 Top L206 18414108 8 5T AIR...

Page 34: ...39K OHM RESISTOR CHIP 0402 1 16W 5 117 1676 90 Top R118 47180103 10K OHM RESISTOR CHIP 0402 1 16W 5 49 1509 0 Bottom R119 47180102 1K OHM RESISTOR CHIP 0402 1 16W 5 49 1470 180 Bottom R120 47180681 6...

Page 35: ...tom R349 47180823 82K OHM RESISTOR CHIP 0402 1 16W 5 29 2146 0 Top R350 47180564 560K OHM RESISTOR CHIP 0402 1 16W 5 29 2198 0 Top R352 47100225 2 2M 0805 CHIP RESISTOR 44 2406 0 Top R353 47180103 10K...

Page 36: ...6001029 28 AWG STRANDED WIRE BLUE INCHES 25105500 SHIELD SST PLUS SYNTHESIZER 25603000 FOAM MOUNTING SPEAKER SST 25603900 SPACER MIC FOAM SST 25605700 MICROPHONE HOLDER SST PLUS ANTENNA AFS 450 ANTENN...

Page 37: ...NG SST MINI 14500025 OWNER S MANUAL 14x 44x SERIES JMX SST 14540006 WARRANTY REGISTRATION CARD JMX 442 MODELS ONLY CASE LABELS 14220002 LABEL CONTROLS JMX 14222035 LABEL NAMEPLATE JMX 14290002 BLANK L...

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