Motorola Radius Cm200 Cm300 Pm400 Detailed 6881098c00 A Manual
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Control Head CM300/PM400 - PCB 8489714U01 / Schematics4-7 10K 47K 10K 47K 10K 47K 10K 47K 10K 47K 10K 47K 9.3 V F1+ F2MIC. AUDIO MIC. PTT KEY_ROW KEY_COL SPI_CLK -SPEAKER CONNECTORHOOK MICROPHONE CONNECTORMAIN BOARD CONNECTOR ESD CONTACTSDIS_RES DISP_CS COM/DATA_SE L SH_R_CS BOOT_RES BOOT_RES SCI MIC. PTT SPKR+ SPKR- UP DOWNSPI_MOSI HOOK RX. AUDIO SCI SPKR+ SPKR- MIC. AUDIO F4 F3RX. AUDIO 0.1uF C22 Y1CZA14 ZB15 ZC4 C23 1000pF VDD 16 VEE 7VSS 8 YOA 12 Y0B 2 Y0C 5 13 Y1A Y1B 1 3 U41 HEF4053B EN6 11 SA SB10 9 SC R13 51K D12 HSMG-C670 D3_3V19 HSMG-C670 D10 J102-8 8J103-19 10 J102-7 7 C43 J103-10 470pF C54 0.1uFR36 47K HSMG-C670 9_3VR28 D25 P101-2 2 680K 51K R12 R27 10R7 10K HSMG-C670 D17 DNF C5 5 C6610K R34 S2 C1 1 C22 C3 3 C44 D23 HSMG-C670 TOUCH_SW DNF D14 HSMG-C670 0 R9 MC74HCT04A U2-6 13 12 12 DNF C4 1000pF 4 C4 5 C56 C6DNF TOUCH_SWS6 TOUCH_SW S3 1 C12 C2 3 C3 10K R8 DNF U2-5 MC74HCT04A 11 10 DNF HSMG-C670 D8 C29 DNF 1000pF 8 DNF0 R10 U2-4 MC74HCT04A 9 680 DNF R20 10K6 C6 9_3VR23 1 C1 C22 3 C34 C4 5 C5 D2 HSMG-C670 TOUCH_SW DNF S1 1K R18 10K R15 100pF DNF DNFJ103-13 13 C33 220pF C53 DNF C35 M3 6 D3_3V DNF 1000pF C30 9_3V J102-6 DNF 100pF D19 HSMH-C670 12 5V_IN DNF C20 2.2uF Q41J103-12 2.2uF MC74HCT04A U2-2 34 C19J103-11 11 9_3V HSMG-C670 D9 DNF 1000pF C27 D18 HSMY-C670 DNF 1000pF C414 47K R38 2 3 18 49_3V J102-4 4 V3 5VDD 7 VREG 16 VSS6 U1-1 LM2904 SEG4 21 SEG5 22 SEG6 23 SEG7 24 SEG8 25 26 SEG9 9SI V1 3 V2 42 43 SEG26 SEG27 44 SEG28 45 SEG29 46 SEG3 20 SEG30 47 48 SEG31 35 SEG19 36 SEG2 19 SEG20 37 SEG21 38 SEG22 39 SEG23 40 SEG24 41 SEG25 SEG1028 SEG11 SEG12 29 SEG13 30 SEG14 31 SEG15 32 SEG16 33 SEG17 34 SEG18 COM214 COM315 CS 10 C_D 11OSC1 1 OSC2 2 SEG0 17 SEG1 18 27 S1D15100U3 CK 8 COM012 COM113 20V VR3 VR2 20V VR1 10uFC1 DNF 20V Q5 5 Q6 6 Q7 7RESET10 SERIN14 SEROUT 9 VCC 16CLK_S11 EN_OE13GND 8 Q0 15 Q1 1 Q2 2 3 Q3 Q4 4 U8 MC74HC595ACLK_L12 DNF 22K R46 R44 R45 0 J102-5 5 DNF 20K 3J103-21 G1 R54 13K J102-3 10K R39220pF DNF C55 J103-18 18 DNF 10K R6 R29 22KDNF C47 220pF 47K R37 R30 10K DNF3 J103-8 8 130KJ103-3 D4 HSMG-C670 R11 M2 M4 220pF C46 220pF DNF DNF 9_3VC45 D16 HSMG-C670 R35 D24 HSMG-C670 0 R43 3.3K R41 DNF DNFS5 TOUCH_SW 2110KJ103-15 15 D3_3V9_3V 1000pF C24 Q89_3V C32D3_3V D3_3V 5V_CH DNF 100pF 0.1uF 5 78 4 9_3V 9_3V 9_3VDNF C14 U1-2 LM2904 6 C17 5V_CH M1J103-4 4 DNF 1000pF1 J103-6 6 Q9J103-1 C5 R50 22K470pF 0 R49 DNF R48 20KR42 0 DNFC48 DNF DNFC50 9_3V220pFJ103-5 5 470pF R33 10K 0.1uFC56 MC74HCT04A U2-3 56 HSMG-C670 D15 Q10 10K R195V_CH C3 470pF 9_3V 470pF 43K R51 C2 C18 HSMG-C670 D21 PWR_GND U2-7 GND7VCC14 0.1uFJ103-9 9 C36 1000pF R40 DNF220pF C44 DNF 10K C3 3 C44 C5 5 C66 9_3V DNF S4 TOUCH_SW C1 1 C22 C16 0.1uF DNFJ103-17 17 J103-7 7 1000pF C421000pF DNF C38 3.9K R24R21 C255V_IN 2.2KDNF 1000pF Q12J102-1 1 Q13 J103-20 20 Q14 R16 27K HSMG-C670 D5 HSMG-C670 D13 0 R25 9_3V 9_3V VR4 20V470pF C49 R31 13K DNF 4.7uF C21 DNF C51 220pF D20 HSMG-C670 R17 13K D27 HSMG-C670 HSMG-C670 D26 1000pF C34 DNF SEG8 13SEG9 14 680 R22 SEG29 34 SEG3 8SEG30 35SEG31 36 SEG4 9SEG5 10SEG6 11SEG7 12SEG21 26SEG22 27SEG23 28SEG24 29SEG25 30 31SEG26 SEG27 32SEG28 33 SEG14 19SEG15 20SEG16 21SEG17 22SEG18 23SEG19 24 SEG2 7SEG20 25 COM2 3 COM3 4SEG0 5SEG1 6SEG10 15SEG11 16SEG12 17SEG13 18 DNF LCD_36PINDS1 COM0 1 COM1 2 R14 10K 0.1uF C15D3_3V C7 1000pF 16 J102-2 2 1000pF C39J103-16 Q11DNF 0.1uF C11 12 1J103-22 G2 U2-1 MC74HCT04A C40 P101-1 J103-2 2 DNF 1000pFJ103-14 14 9_3V HSMG-C670 D3 C8 1000pF 9_3V HSMG-C670 D22 SHUTDOWN 3 1000pF C6 DNF LP2951C 5V_TAP65 ERROR FEEDBACK 7 GND 4 INPUT 8 OUTPUT1 SENSE29_3V DNF U18 HSMG-C670 D11 C26 1000pF C58 .022uF 10 470pF C52 R3 SI CSMUX_CTL ROW COL 10 R26TELCO_PTTCS CK MUX_CTL CH_PTT CH_PTT TELCO_PTT CK SI Control Head CM300/PM400 Schemati c
4-8Control Head CM300/PM400 - PCB 8489714U01 / Schematics3.1 Control Head PCB 8489714U01 Parts List Circuit RefMotorola Part NoDescriptionC1 NOTPLACED CAP, 10uF C2 2113740F67 CAP, 470pF C3 2113740F67 CAP, 470pF C4 2113740F29 CAP, 12pF C5 2113740F67 CAP, 470pF C6 2113740F29 CAP, 12pF C7 2113741F25 CAP, 1000pF C8 2113741F25 CAP, 1000pF C11 2113743K15 CAP, 0.1uF C14 NOTPLACED CAP, 0.1uF C15 2113743K15 CAP, 0.1uF C16 2113743K15 CAP, 0.1uF C17 NOTPLACED CAP, 1000pF C18 2113743K15 CAP, 0.1uF C19 2113743F18 CAP, 2.2uF C20 NOTPLACED CAP, 2.2uF C21 NOTPLACED CAPP, 4.7uF C22 2113743K15 CAP, 0.1uF C23 2113741F25 CAP, 1000pF C24 2113741F25 CAP, 1000pF C25 NOTPLACED CAP, 1000pF C26 2113741F25 CAP, 1000pF C27 2113740F29 CAP, 12pF C29 2113740F29 CAP, 12pF C30 NOTPLACED CAP, 100pF C32 NOTPLACED CAP, 100pF C33 NOTPLACED CAP, 100pF C34 2113740F29 CAP, 12pF C35 NOTPLACED CAP, 1000pF C36 NOTPLACED CAP, 1000pF C38 NOTPLACED CAP, 1000pF C39 NOTPLACED CAP, 1000pF C40 NOTPLACED CAP, 1000pF C41 NOTPLACED CAP, 1000pF C42 2113740F29 CAP, 12pF C43 2113743K15 CAP, 0.1uF C44 NOTPLACED CAP, 220pF C45 NOTPLACED CAP, 220pF C46 NOTPLACED CAP, 220pF C47 NOTPLACED CAP, 220pF C48 NOTPLACED CAP, 220pF C49 2113740F67 CAP, 470pF C50 2113740F67 CAP, 470pF C51 2113740F29 CAP, 12pF C52 2113740F67 CAP, 470pF C53 2113740F29 CAP, 12pF C54 2113740F67 CAP, 470pF C55 NOTPLACED CAP, 220pF C56 2113743K15 CAP, 0.1uF C58 2113743E07 CAP, .022uF D2 4805729G75 HSMG-C670 D3 4805729G75 HSMG-C670 D4 4805729G75 HSMG-C670 D5 4805729G75 HSMG-C670 D8 4805729G75 HSMG-C670 D9 4805729G75 HSMG-C670 D10 4805729G75 HSMG-C670 D11 4805729G75 HSMG-C670 D12 4805729G75 HSMG-C670 D13 4805729G75 HSMG-C670 D14 4805729G75 HSMG-C670 D15 4805729G75 HSMG-C670 D16 4805729G75 HSMG-C670 D17 4805729G75 HSMG-C670 D18 4805729G73 HSMY-C670 D19 4805729G74 HSMH-C670 D20 4805729G75 HSMG-C670 D21 4805729G75 HSMG-C670 D22 4805729G75 HSMG-C670 D23 4805729G75 HSMG-C670 D24 4805729G75 HSMG-C670 D25 4805729G75 HSMG-C670 D26 4805729G75 HSMG-C670 D27 4805729G75 HSMG-C670 DS1 NOTPLACED LCD_36PIN J102 0908353Y02 CONN_J J103 0989241U02 CONN_J Circuit RefMotorola Part NoDescription M1 7588823L03 CONTACTM2 7588823L03 CONTACT M3 7588823L03 CONTACT M4 7588823L03 CONTACT P101 2809926G01 CONN_P Q8 4809940E02 DTC114YE Q9 4809940E02 DTC114YE Q10 4809940E02 DTC114YE Q11 4809940E02 DTC114YE Q12 4813824B01 PZT2222A Q13 4809940E02 DTC114YE Q14 4813824A10 MMBT3904 Q41 4809940E02 DTC114YE R3 0662057A01 RES, 10 R6 NOTPLACED RES, 10K R7 NOTPLACED RES, 10K R8 NOTPLACED RES, 10K R9 0662057B47 RES, 0 R10 NOTPLACED RES, 0 R11 0662057B01 RES, 130K R12 0662057A90 RES, 51K R13 0662057A90 RES, 51K R14 0662057A73 RES, 10K R15 NOTPLACED RES, 10K R16 0662057A83 RES, 27K R17 0662057A76 RES, 13K R18 0662057A49 RES, 1K R19 0662057A73 RES, 10K R20 NOTPLACED RES, 10K R21 0662057A63 RES, 3.9K R22 0662057A45 RES, 680 R23 0662057A45 RES, 680 R24 0662057A57 RES, 2.2K R25 0662057B47 RES, 0 R26 0662057A01 RES, 10 R27 0662057A01 RES, 10 R28 0662057B18 RES, 680K R29 0662057A81 RES, 22K R30 NOTPLACED RES, 10K Circuit RefMotorola Part NoDescription R31 0662057A76 RES, 13K R33 0662057A73 RES, 10K R34 0662057A73 RES, 10K R35 0662057A61 RES, 3.3K R36 0662057A89 RES, 47K R37 0662057A89 RES, 47K R38 0662057A89 RES, 47K R39 0662057A73 RES, 10K R40 0662057A73 RES, 10K R41 0662057A73 RES, 10K R42 NOTPLACED RES, 0 R43 NOTPLACED RES, 0 R44 NOTPLACED RES, 20K R45 0662057B47 RES, 0 R46 NOTPLACED RES, 22K R48 NOTPLACED RES, 20K R49 0662057B47 RES, 0 R50 NOTPLACED RES, 22K R51 0662057A88 RES, 43K R54 0662057A76 RES, 13K S1 NOTPLACED TOUCH_SW S2 NOTPLACED TOUCH_SW S3 NOTPLACED TOUCH_SW S4 NOTPLACED TOUCH_SW S5 NOTPLACED TOUCH_SW S6 NOTPLACED TOUCH_SW U1 5113818A01 LM2904 U2 5113805A05 MC74HCT04A U3 5102109U01 S1D15100 U8 5113805A75 MC74HC595A U18 NOTPLACED LP2951C U41 5184704M60 HEF4053B VR1 4813830A75 MMBZ20VAL VR2 4813830A75 MMBZ20VAL VR3 4813830A75 MMBZ20VAL VR4 4813830A75 MMBZ20VAL Circuit RefMotorola Part NoDescription
CM200/CM300/PM400 Radios UHF2 (438-470 MHz) 1-25 W Service Information Issue: November, 2007 M
ii Computer Software Copyrights The Motorola products described in this manual may include copyrighted Motorola computer programs stored in semiconductor memories or other media. Laws in the United States and other countries preserve for Motorola certain exclusive rights for copyrighted computer programs, including the exclusive right to copy or reproduce in any form, the copyrighted computer program. Accordingly, any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant, either directly or by implication, estoppel or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive royalty-free license to use that arises by operation of law in the sale of a product.
iii Table of Contents Chapter 1MODEL CHART AND TECHNICAL SPECIFICATIONS 1.0 CM200/CM300/PM400 Model Chart .................................................................... 1-1 2.0 Technical Specifications ...................................................................................... 1-2 Chapter 2THEORY OF OPERATION 1.0 Introduction .......................................................................................................... 2-1 2.0 UHF (438-470 MHz) Receiver ............................................................................. 2-1 2.1 Receiver Front-End...................................................................................... 2-1 2.2 Receiver Back End ...................................................................................... 2-2 3.0 UHF Transmitter Power Amplifier (438-470 MHz) ............................................... 2-2 3.1 First Power Controller Stage........................................................................ 2-2 3.2 Power Controlled Driver Stage.................................................................... 2-3 3.3 Final Stage................................................................................................... 2-3 3.4 Directional Coupler ...................................................................................... 2-3 3.5 Antenna Switch ............................................................................................ 2-3 3.6 Harmonic Filter ............................................................................................ 2-4 3.7 Power Control .............................................................................................. 2-4 4.0 UHF (438-470 MHz) Frequency Synthesis .......................................................... 2-4 4.1 Reference Oscillator .................................................................................... 2-4 4.2 Fractional-N Synthesizer ............................................................................. 2-5 4.3 Voltage Controlled Oscillator (VCO) ............................................................ 2-6 4.4 Synthesizer Operation ................................................................................. 2-7 5.0 Controller Theory of Operation............................................................................ 2-8 5.1 Radio Power Distribution ............................................................................. 2-8 5.2 Protection Devices ..................................................................................... 2-10 5.3 Automatic On/Off ....................................................................................... 2-10 5.4 Microprocessor Clock Synthesiser ............................................................ 2-11 5.5 Serial Peripheral Interface (SPI) ................................................................ 2-12 5.6 SBEP Serial Interface ................................................................................ 2-12 5.7 General Purpose Input/Output ................................................................... 2-12 5.8 Normal Microprocessor Operation ............................................................. 2-13 5.9 Static Random Access Memory (SRAM) ................................................... 2-14 6.0 Control Board Audio and Signalling Circuits ...................................................... 2-14 6.1 Audio Signalling Filter IC and Compander (ASFIC CMP) .......................... 2-14 7.0 Transmit Audio Circuits ...................................................................................... 2-15 7.1 Microphone Input Path............................................................................... 2-15 7.2 PTT Sensing and TX Audio Processing .................................................... 2-16 8.0 Transmit Signalling Circuits ............................................................................... 2-17 8.1 Sub-Audio Data (PL/DPL).......................................................................... 2-17 8.2 High Speed Data ....................................................................................... 2-18
iv 8.3 Dual Tone Multiple Frequency (DTMF) Data ............................................. 2-18 9.0 Receive Audio Circuits....................................................................................... 2-19 9.1 Squelch Detect .......................................................................................... 2-19 9.2 Audio Processing and Digital Volume Control ........................................... 2-20 9.3 Audio Amplification Speaker (+) Speaker (-) ............................................. 2-20 9.4 Handset Audio ........................................................................................... 2-21 9.5 Filtered Audio and Flat Audio .................................................................... 2-21 10.0 Receive Signalling Circuits ................................................................................ 2-21 10.1 Sub-Audio Data (PL/DPL) and High Speed Data Decoder........................ 2-21 10.2 Alert Tone Circuits ..................................................................................... 2-22 Chapter 3TROUBLESHOOTING CHARTS 1.0 Troubleshooting Flow Chart for Receiver RF (Sheet 1 of 2) ................................ 3-2 1.1 Troubleshooting Flow Chart for Receiver (Sheet 2 of 2) ............................. 3-3 2.0 Troubleshooting Flow TX RF (No Output Power) ................................................ 3-4 2.1 Troubleshooting Flow TX RF (No Output Power/No Current) ..................... 3-5 2.2 Troubleshooting Flow TX RF (Not Txing at Nominal power) ....................... 3-6 3.0 Troubleshooting Flow Chart for Synthesizer........................................................ 3-7 4.0 Troubleshooting Flow Chart for VCO................................................................... 3-8 5.0 Troubleshooting Flow Chart for DC Supply (1 of 2) ............................................. 3-9 5.1 Troubleshooting Flow Chart for DC Supply (2 of 2) ................................... 3-10 Chapter 4UHF2 PCB/ SCHEMATICS/ PARTS LISTS 1.0 Allocation of Schematics and Circuit Boards ....................................................... 4-1 1.1 UHF2 and Controller Circuits....................................................................... 4-1 2.0 UHF 1-25 W Band 2 PCB 8488978U01 (rev. P9) / Schematics.......................... 4-3 UHF2 Interconnection between Main Board and Power Amplifier Compartment ............................................................................ 4-3 UHF2 (438-470 MHz) 1-25 W 8488978U01 (rev. P9), Top Side ........................ 4-4 UHF2 (438-470 MHz) 1-25 W 8488978U01 (rev. P9), Bottom Side ................... 4-5 UHF2 (438-470 MHz) 1-25 W Main Circuit (Sht 1 of 2) ...................................... 4-6 UHF2 (438-470 MHz) 1-25 W Main Circuit (Sht 2 of 2) ...................................... 4-7 UHF2 (438-470 MHz) 1-25 W Transmitter (Sht 1 of 2) ....................................... 4-8 UHF2 (438-470 MHz) 1-25 W Transmitter (Sht 2 of 2) ....................................... 4-9 UHF2 (438-470 MHz) 1-25 W Synthesiser and VCO (Sht 1 of 2) .................... 4-10 UHF2 (438-470 MHz) 1-25 W Synthesiser and VCO (Sht 2 of 2) .................... 4-11 UHF2 (438-470 MHz) 1-25 W Receiver Front and Back End (Sht 1 of 2) ........ 4-12 UHF2 (438-470 MHz) 1-25 W Receiver Front and Back End (Sht 2 of 2) ........ 4-13 UHF2 (438-470 MHz) 1-25 W DC and Audio Circuits (Sht 1 of 2) .................... 4-14 UHF2 (438-470 MHz) 1-25 W DC and Audio Circuits (Sht 2 of 2) .................... 4-15 UHF2 (438-470 MHz) 1-25 W Microprocessor and Controller Circuits (Sht 1 of 2) .......................................................................... 4-16 UHF2 (438-470 MHz) 1-25 W Microprocessor and Controller Circuits (Sht 2 of 2) .......................................................................... 4-17
v UHF2 (438-470 MHz) 1-25 W Power Control Circuit ........................................ 4-18 2.1 UHF2 PCB 8488978U01 (rev. P9) Parts List 1-25 W ................................ 4-19 3.0 UHF 1-25 W Band 2 PCB 8486684Z02 (Rev. A) / Schematics ......................... 4-30 UHF2 Interconnection between Main Board and Power Amplifier Compartment .......................................................................... 4-30 UHF2 (438-470 MHz) 1-25 W 848668Z02 (Rev. A), Top Side ......................... 4-31 UHF2 (438-470 MHz) 1-25 W 848668Z02 (Rev. A) , Bottom Side .................. 4-32 UHF2 (438-470 MHz) 1-25 W Main Circuit (Sht 1 of 2) .................................... 4-33 UHF2 (438-470 MHz) 1-25 W Main Circuit (Sht 2 of 2) .................................... 4-34 UHF2 (438-470 MHz) 1-25 W Transmitter (Sht 1 of 2) ..................................... 4-35 UHF2 (438-470 MHz) 1-25 W Transmitter (Sht 2 of 2) ..................................... 4-36 UHF2 (438-470 MHz) 1-25 W Synthesiser and VCO (Sht 1 of 2) ..................... 4-37 UHF2 (438-470 MHz) 1-25 W Synthesiser and VCO (Sht 2 of 2) ..................... 4-38 UHF2 (438-470 MHz) 1-25 W Receiver Front and Back End (Sht 1 of 2) ........ 4-39 UHF2 (438-470 MHz) 1-25 W Receiver Front and Back End (Sht 2 of 2) ........ 4-40 UHF2 (438-470 MHz) 1-25 W DC and Audio Circuits (Sht 1 of 2) .................... 4-41 UHF2 (438-470 MHz) 1-25 W DC and Audio Circuits (Sht 2 of 2) .................... 4-42 UHF2 (438-470 MHz) 1-25 W Microprocessor and Controller Circuits (Sht 1 of 2) ........................................................................... 4-43 UHF2 (438-470 MHz) 1-25 W Microprocessor and Controller Circuits (Sht 2 of 2) ........................................................................... 4-44 UHF2 (438-470 MHz) 1-25 W Power Control Circuit ........................................ 4-45 3.1 UHF2 PCB 8486684Z02 (Rev. A) Parts List 1-25 W ................................. 4-46
Chapter 1 MODEL CHART AND TECHNICAL SPECIFICATIONS 1.0 CM200/CM300/PM400 Model Chart UHF2, 1-25 W, 438-470 MHz Model Description AAM50RNC9AA1ACM200 438-470 MHz, 1-25 W, 4 CH AAM50RNF9AA1AN CM300 438-470 MHz, 1-25 W, 32 CH AAM50RNF9AA3ANPM400 438-470 MHz, 1-25 W, 64 CH Item Description X PMUE1996_ CM200 Super Tanapa UHF2, 1-25 W, 4 CH XPMUE1998_CM300 Super Tanapa UHF2, 1-25 W, 32 CH X PMUE2090_ PM400 Super Tanapa UHF2, 1-25 W, 64 CH XFLE1620_CM200 Tanapa UHF2, 1-25 W, 4 CH X PMUE2026_ CM300 Tanapa UHF2, 1-25 W, 32 CH XPMUE2026_PM400 Tanapa UHF2, 1-25 W, 64 CH X PMLN4598_ Control Head XPMLN4599_Control Head X FLN3108_AN Control Head XFLE1620_SCM200 UHF2 Service Board X PMUE2026_S CM300 UHF2 Service Board XPMUE2026_SPM400 UHF2 Service Board X 6902966C30 CM200 User Guide (bilingual) X6881096C22CM300 User Guide (bilingual) X 6881096C32 PM400 User Guide (bilingual) XXHKLN4220CM200/CM300 User Guide CDROM (bilingual) X HKLN4219 PM400 User Guide CDROM (blilingual) x = Indicates one of each is required.
1-2 MODEL CHART AND TECHNICAL SPECIFICATIONS 2.0 Technical Specifications Data is specified for +25°C unless otherwise stated. General Specification UHF2 Frequency Range:438-470 MHz Frequency Stability (-30°C to +60°C, 25°C Ref.)±2.5 PPM Channel Capacity:CM200 - 4 CM300 - 32 PM400 - 64 Channel Spacing: 12.5/20/25 kHz Power Supply:13.8 Vdc (11 Vdc - 16.6 Vdc) negative Vehicle ground Dimensions (L x W x H)4.65” X 6.67” X 1.73” (118mm X 169.5mm X 44mm) Weight2.25 lbs (1.01 kg) FCC Description AZ492FT4856 Operating Temperature-30 to 60° C (Display only -20°C to 60°C) Storage Temperature -40 to 85° C Thermal Shock-40 to 80° C High Humidity 95% RH @ 50° C for 8 hrs ESD15KV air discharge Packing Test Impact Test