BBOPR3800GMRS/FRS TRANSCEIVERS

1 2 3 4 5 6 78 ABCD 8 7 6 5 4 3 2 1 D CBA 2 TSUEN SHING ELECTRONICS LTD 2 BLOCK-PR38502DXVP-02A A Title Size: Model No.: Rev.: Sheet of A2 Walkie Talkie DWG.: ZNHU 2005.11.03 Drawing No.: CHK.: APP.: BLOCK-PR3850-2 DXVP ENG-015-B NOTE: REV: NAME:DATE: REV: NAME:DATE: REV: NAME:DATE: REV: NAME:DATE: REV: NAME:DATE: REV: NAME:DATE: REV: NAME:DATE: REV: NAME:DATE: REV: NAME:DATE: REV: NAME:DATE: REV: NAME:DATE: ANT?ANTENNA Q20 VCOC SW X1 32.768Khz LED SW Q13 U3 memory Q19 RX V+ SW X2 21.150Mhz ALL KEY U2 Speaker Amplifier BATTERY SP1 Mic1 CPU :U1 EM78568 U7 AN6311FA(PLL;IF AMP;Detector;Mic AMP) Q21 TX V+ SWQ22 WX V+ SW Charge SW Q16 D11 Modulate Amp/LOW Pass filter low pass filter in Mic1 low pass filter out (TP11) Hihg frequency Amp Filter Cf1 Q2 Mixing Filter CF2 IF AMP Q3 Low pass filter Drive/cushion Q8,9VCO Q4,5,10,D10POWER AMP Q6 Power control Q11 N OAA Q23,24,25,26 SW D1,2

COBRA ELECTRONICS CORP. FCC ID: BBOPR3800 EXTERNAL PHOTOS

PR-3850 FCC LABEL PR-3800 FCC LABEL LI-6050 FCC LABEL LI-3950 FCC LABEL

COBRA ELECTRONICS CORP. FCC ID: BBOPR3800 INTERNAL PHOTOS

PR-3850(and PR-3800) circuit description ITransmitting section 1。Low frequency amplifying section： MIC signal input @ pin9 of U7, output @ Pin5 .After AMP(EMBEDDED IN U7) amplifying,the audio signal go through a LPF CONSISTED of R80,c140,U7 pin17&16,then R79 to FM modulation.. 2.CTCSS section： CPU send out by RC network alternation into FM modulation. 3.VCO section: ‘Q4、‘Q5、‘U10 work as VCO, the varactor ‘D4 value (frequency) is controlled by PLL,‘Q20 is a frequency band switch for RX and TX,‘Q20 is a power switch for power-save mode. 4.Power amplifying section： ‘Q9 is a buffer transistor and ‘Q8 is a driver, ‘Q6 acts as power amplifier,when the signal had been amplified by ‘Q6,it will pass to a switch diode ‘D1 and send out from the antenna;Q11 is low power control transistor. IIReceiving section 1。RF section： The signal received by antenna passed to LPF network,which is consisted of ‘L1、‘L2,then amplified by‘ Q7,Q1,and passes to the band-pass filter ‘CF2、after frequency selection it comes into mixing frequency network‘Q2. 2。Local-oscillator and mixing frequency: ‘Q2 is frequency mixing transistor,the VCO forms a local-oscillator circuit,the frequency is controlled by PLL,after mixing,‘L9、‘C23 output the first IF frequency 21.6MHz. 3。IF section： ‘CF1 is a 21.6MHz band-pass,the second IF is 450KHz,U7(AN6311FA) works as the second mixing,local-osicillator,IF amplifier,demodulation,S/N controller,etc. 4．audio amplifying： CPU internally include BPF and HPF comprised of C51,R71,C116 ,R45(the CTCSS can’t be entered in it) then the signal come into U9 (LM386),the power amplifier lever, Q14、 Q15 are the power control switches for LM386. 5。CTCSS section： Audio signal(with CTSS) go through AMP circuit,LPF ,and detected to output a control level so as to control VCC OF IL386. III Others 1.PLL section： The ‘U7 (AN6311FA) works as PLL, ‘X2 is a local-osillation crystal, ‘VC1 is a trimmer.The ‘X2 is fixed on 21.15MHz and the‘ U1 third pins output constant current to control the VCO oscillation frequency,the required frequency is controlled by CPU. 2.Recharge check： Q16,D14 form the recharge check circuit. 3. Low voLtage check： R81,82 form the low-voltage check circuit. 4.Power source： There are 5 groups power source, VDD,VCOC,RX-V+,TX-V+,WX-V+(只限于 PR-3850 有)in which. IV WX section(only applied to PR-3850,not to PR3800) Q25,Q26,U7, work as WX VCO,Q23 RF AMP,Q24 is frequency mixing transistor ,To CF2 21.6 IF filter.

PR-3850 Alignment instructions Any repairs or adjustments should be made under the supervision of a qualified radiotelephone technician. I TRANSMITTER 1.Power Supply Voltage The Power supply voltage should be set for 6.0VDC measured at the radio during transmit. Periodically check the power supply voltage during the alignment procedure. 2.Frequency Setting A. Connect a frequency counter or Communications Service Monitor to the Antenna through an RF power attenuator (10 watt minimum rating, 20 dB minimum attenuation). B. Depress the PTT switch. C. Adjust the VC1 trimmer capacitor such that the output frequency is equal to the channel frequency with a maximum error of +/- 200 Hz. D. Release the PTT switch. 3. Output Power Alignment. A. Set the power supply voltage for 6.0VDC. B. Connect a Communications Service Monitor or a wattmeter and dummy load to the antenna connector. C. Depress the PTT switch. D. To be convinced for2.0 Watt output power with a maximum error of +/-0.3 Watt. E. Release the PTT switch. 4. Deviation Adjustment. A. Connect an audio generator to the microphone jack(JK1). The audio frequency Should be set at 1 KHz. B. Connect an FM deviation meter or Communications Service Monitor to the antenna connector through an RF power attenuator (10 watt minimum rating, 20 dB minimum attenuation). Set the monitor to read peak deviation. C. Depress the PTT switch. D. Adjust the audio generator level 100 mV rms. E. Adjust R79 for +/- 2.2 KHz maximum deviation. (With CTCSS tone) F. To be convinced +/- 2.0KHz without CTCSS tone.(1.5KHz dev. 20dB up) G. Release the PTT switch. II RECEIVER NOTE: Insure that the proper channel has been selected before preceding with the alignment procedure. 1. Power Supply Voltage The proper voltage for testing is 6.0 VDC. 2. Receiver Alignment A. Connect an RF signal generator or Communications Service Monitor to the antenna connector. B. Connect a SINAD meter and oscilloscope across the speaker terminals. C. Set the output level of the RF signal generator for -47 dBm. The generator should be set for +/- 1.5 KHz deviation of a 1 KHz tone. D. Set the audio output level for 0.6 Vrms. by adjusting volume. E. Reduce the output level of the RF signal generator for produce a 6-12 dB SINAD indication. III. WEATHER: 1. Power Supply Voltage The proper voltage for testing is 6.0 VDC 2 weather Alignment: A. Connect an RF signal generator or Communications Service Monitor to the antenna connector. B.Connect a SINAD meter and oscilloscope across the speaker terminals. C.Set the output level of the RF signal generator for -47 dBm. The generator should be set for +/- 3 KHz deviation of a 1 KHz tone. D.Set the audio output level for 0.6 Vrms. by adjusting volume. E: educe RF output level to equal or less than –118dBm with condition of SIND=12Db.

Bill of Material for SCH-PR38502WXEVP-01/[email protected] Used Part Type Designator Footprint ==== ========================= ========== ============== 1 0.5P C183 0402 3 0.22uH L10 L22 0603 L23 1 0.47 C89 0402 2 0.82uH L9 L21 0603 6 0R C6 C62 0402 C135 R29 R31 R102 1 0R R9 0805 1 1.2K R26 0402 3 1.5K R59 R85 0402 R122 1 1.8P C75 0402 12 1K R7 R11 R32 0402 R41 R44 R52 R53 R73 R91 R104 R110 R118 1 1M(1%) R81 0402 1 1N4148 D14 SMT-D4148 9 1NF C1 C2 C4 0402 C68 C70 C108 C109 C140 C154 1 1P C31 0402 13 1UF C21 C32 0603 C52 C53 C54 C55 C56 C57 C58 C59 C102 C113 C119 1 1UH L27 0603 4 2.2K R43 R61 0402 R84 R96 2 2.2UF C125 C159 0805 1 2K R58 0402 2 2P C88 C148 0402 1 2PF C72 0402 2 2SC4226(R25) Q8 Q9 SC-70 10 2SC5006 Q1 Q2 Q4 SOT-523 Q5 Q7 Q10 Q23 Q24 Q25 Q26 1 2T L11 L-TG1.4 4 3.3K R36 R39 0402 R51 R57 1 3.3NF R97 0402 2 3.9K R49 R124 0402 2 3P C8 C76 0402 1 3T L14 L-TG1.7 5 4.7K C37 R24 0402 R30 R55 R76 1 4.7N C106 0402 2 4.7R R75 R113 0402 1 4.7R R22 0603 1 4T(1.2) L6 L-TG2.1 1 4T L15 L-TG2.1 1 4T/1.1 L1 L-TG2.1 1 5.1K R56 0402 2 5.6K R54 R63 0402 1 5.6V DZ1 Z3.3 1 5P C17 0402 5 5T L2 L3 L4 L-TG2.1 L5 L8 1 6.8N C99 0402 1 6.8NF C141 0402 1 6P C77 0402 2 7P C25 C133 0402 1 7PF C87 0402 1 7T(1.0) L24 L-TG2.5 1 8OHM/0.5W SP1 RAD3.6 6 8P C7 C27 C30 0402 C33 C73 C79 7 10K R4 R34 R45 0402 R50 R115 R116 R117 3 10N C51 C130 0402 C139 1 10N C105 0603 22 10NF C12 C18 0402 C19 C20 C22 C24 C35 C38 C43 C61 C63 C64 C66 C103 C104 C115 C117 C118 C124 C143 C151 R79 6 10P C26 C29 0402 C78 C85 C131 C146 1 10uF C107 0805 1 12K R37 0402 1 12NH L16 0603 2 12P C84 C158 0402 1 15K R5 0402 3 15P C9 C28 0402 C132 1 15R R23 0402 1 18K R71 0402 1 18NH L7 0603 5 18P C16 C81 0402 C100 C134 C147 1 20N C116 0402 3 20P C82 C83 0402 C182 1 20p VC1 VC4.5 1 21.6MHz CF2 XTL3.2/H 1 21.15MHZ X2 XTL4.9 1 22K(TR) R162 0805 1 22K C39 0402 1 22N C65 0402 1 22uF C60 E3.2X6.0 1 24K C114 0402 2 27K R87 R95 0402 1 27PF C149 0402 1 32.768KHZ X1 XTL3X8 2 39K R27 R80 0402 2 39P C136 C138 0402 1 39PF C184 0402 6 47K R2 R3 R40 0402 R86 R88 R99 2 47N C48 C120 0402 2 47NF C86 R77 0402 1 47NH L13 0603 4 47P C71 C153 0402 C155 C156 3 47R R6 R109 0402 R111 1 47R R35 0805 1 47UF C74 E4X7 1 51K R107 0402 8 56K R1 R46 R65 0402 R72 R112 R119 R120 R121 4 56NH L12 L19 0603 L20 L26 2 56P C23 C145 0402 1 93C66 U3 SO-8 1 100 R38 0402 7 100K R16 R17 0402 R18 R33 R67 R68 R123 1 100K VR1 VR-SMD-3.8 16 100N C45 C46 0402 C47 C49 C50 C90 C91 C92 C93 C94 C95 C96 C97 C98 C101 C137 1 100NF C126 0402 2 100NH L17 L25 0603 4 100P C5 C42 0402 C128 C152 10 100R R12 R13 0402 R42 R74 R89 R90 R105 R108 R114 R149 1 100uF C111 E5X7 2 100uF C110 C123 ED5 2 120K R60 R78 0402 1 120P C121 0402 1 150K R98 0402 2 150R R19 R20 0402 1 200K R47 0402 2 220K R10 R93 0402 1 220N C127 0402 2 220P C13 C44 0402 2 220R R15 R21 0402 1 220uF C122 ED5.2.5 1 330 R92 0402 2 330K R48 R83 0402 1 330P C129 0402 2 390K R69 R101 0402 1 450KHz CF3 CF455E 3 470K R100 R103 0402 R106 1 470NF C157 0402 13 470PF C10 C11 0402 C14 C15 C34 C36 C40 C41 C69 C80 C112 C144 C150 3 470R R8 R14 R70 0402 1 680K R94 0402 1 820PF C3 0402 1 910K(1%) R82 0402 1 6052A MIC1 MIC6.0 1 8550 Q15 SOT-23A 1 9018H Q3 SOT-23A 1 AN6311FA U7 QFP056-P-1010B 1 Adjust R25 0402 1 BA277(3850) D18 SOD-523 9 BA277 D1 D2 D3 SOD-523 D5 D6 D7 D8 D9 D12 1 BB202A D10 SOD-323 1 CDB455 T1 CDB450C3 1 CML2836A U4 SOT-89 1 Call SW1 SW5.0 1 Down SW3 SW5.0 1 EM78P568 U1 CHIP\EM78P568 1 HDF465MHz CF1 446MHz 1 HI/LO SW10 SW5.0 1 HVU202A D15 SOD-323 1 IL386D U2 SMD8A 1 LCD-PR3850 LCD1 LCD-PR3850 1 Lock SW7 SW5.0 1 MBT3906 Q18 SOT-23A 6 MMBT3904 Q11 Q12 SOT-23A Q13 Q14 Q17 Q27 5 MMBT3906 Q16 Q19 SOT-23A Q20 Q21 Q22 4 NC C142 C160 0402 R28 R62 1 NC L18 0603 1 NE5510279A(W2) Q6 NE5510279A 1 PTT SW2 SW5.0 1 Range SW6 SW5.0 1 ST103-06 JK1 ST-103-06 1 UP SW5 SW5.0 1 WT-419VOL VOL1 VOLF-12NP

1 2 3 4 5 6 78 ABCD 8 7 6 5 4 3 2 1 D CBA 1 TSUEN SHING ELECTRONICS LTD 2 SCH- -PR38502WXEVP -01@E @E Title Size: Model No.: Rev.: Sheet of A3 RF Board DWG.: ZNHU 2005-11-04 Drawing No.: CHK.: APP.: PR-3850-2-WX-EV ENG-015-A BAT CF2 21.6MHz C78P L7 18NH Q1 2SC5006 R2315R L1956NH C2910P C41 470PF C11470PF R19150R R15220R C1810NF Q2 2SC5006 R10220K R111K C10 470PF C175P R515K ANT1 L45T C257P L14T/1.1 D2BA277 C338P C2356P L9 0.82uH TX-V+ RX-V+ TX-V+ R12100R L112T L35T C776P C2815P Q8 2SC4226(R25) R565.1K C7147P R573.3K C8118P Q9 2SC4226(R25) C27 8P C1910NF R635.6K L55T C6 0R CF1 HDF465MHz C4310NF C26 10P R21 220R R8470R R16100K C15812P L154T C1618P C36470PF C35 10NF R554.7K 2.1V 0.6V 6V C15347P L25100NH C15110NF R106470K C73 8P Q25 2SC5006 R90 100R C14610P L23 0.22uH C154 1NF C15647P Q24 2SC5006 R9947K R104 1K C10018P C1337P WX-V+ C144470PF C152 100P R108100R C14310NF L1256NH R89100R 8V TX-V+ L21 0.82uH C145 56P C798P C5100p L10 0.22uH C34470PF Q23 2SC5006 R8647K C13418P L2056NH C13110P R113 4.7R R11147R Q11 MMBT3904 R290R R6556K R156K C83P C6110NF Q72SC5006 R647R C8412P C13215P R582K R591.5K R545.6k + C6022uF R224.7R D1 BA277 IF INMOD BAT BAT MOD IF IN RX-V+TX-V+ RX-V+TX-V+ VDD VDD RXPD RXPD FINR HI/LO2 HI/LO2 WX-V+ WX-V+FINR Q6 NE5510279A(W2) VCO Part C159 2.2uF L85T TP1 L25T C915P C7810P L143T L1347NH Q39018H NOAA part C1 1NF R105100R C149 27PF R10751K C148 2P C147 18P C150 470PF Q26 2SC5006 C15547P L24 7T(1.0) 0.6V D15HVU202A R10947R WX-V+ L22 0.22uH C311P RXPD1 RXPD1 RXPD1 R114100R NOAA part R74100R C69 470PF L18 NC C160NC VDD VCOC VCOC L17100NH VCOC R20150R C30 8P R5010K R39 3.3K C751.8P C8510P C88 2P Q4 2SC5006 Q5 2SC5006 + C74 47UF R33100K C722PF L64T(1.2) D10BB202A C681nF R4047K C87 7PF R38100 C8647NF C763P D3 BA277 C374.7K L16 12NH L2656NH L271UH R42100R R612.2K C89 0.47 C13220P Q102SC5006 R244.7K RX-V+ C2010NF R13 100R TP2

1 2 3 4 5 6 78 ABCD 8 7 6 5 4 3 2 1 D CBA 2 TSUEN SHING ELECTRONICS LTD 2 SCH-- PR38502WXEVP-02@E Title Size: Model No.: Rev.: Sheet of A2 Walkie Talkie DWG.: ZNHU 2005-11-04 Drawing No.: CHK.: APP.: PR38502WXEVP ENG-015-B NOTE: REV: NAME:DATE: REV: NAME:DATE: REV: NAME:DATE: REV: NAME:DATE: REV: NAME:DATE: REV: NAME:DATE: REV: NAME:DATE: REV: NAME:DATE: REV: NAME:DATE: REV: NAME:DATE: REV: NAME:DATE: C3922K R261.2K SP1 8OHM/0.5W + MIC16052A C40470PF C113 1uF R247K C64 10NF IF INMOD BAT BAT MOD IF IN RX-V+TX-V+ RX-V+TX-V+ VDD VDD R7747NF C49100N R100470K C112470PF C11810NF C11710NF X2 21.15MHZ C91100N + C110100uF C211uF C1064.7N C10510N Q14 MMBT3904 BAT R441K _ 2 + 3 GND 4 BP 7 O/P 5 G2 8 G1 1 VCC 6 U2 IL386D R754.7R C10710uF ENIN 1 CDET 2 TXDET 3 PSAVE 4 SFOUT 5 CMPDC 6 ROFE 7 MICOUT 8 MICIN 9 BREF 10 ADJIN 11 BMOUT 12 CREF 13 VCC2 14 GND2 15 SPOUT 16 SPIN 17 RSSIOUT 18 EDET 19 GND3 20 EXPOUT 21 PMOUT 22 PMIN 23 PREOUT 24 PREIN 25 DETOUT 26 QIN 27 QOUT 28 NFIN 29 NFOUT 30 SQDET 31 IFREF1 32 IFIN 33 IFREF2 34 MIX2OUT 35 VCC1 36 MIX2IN 37 GND 38 LIMOUT 39 SIGOUT 40 LIMIN 41 RXVCC 42 RXVSS 43 FINR 44 VSS 45 RXPD 46 VDD 47 TXPD 48 TXVCC 49 FINT 50 TXVSS 51 OSCI 52 OSCO 53 OSCOUT 54 DATAIN 55 CLKIN 56 U7 AN6311FA VDD C4847N C50100N C3820PF C41NF C591uF C1401NF R973.3NF C135 0R C2410NF C137 100N C129330P R98150K C996.8N R69390K R962.2K C128100P VDD R94680K C14470PF R3712K C15 470PF C21NF R9527K C127 220N C98100N C97100N CF3 450KHz C94100N C93100N R92330 C95100N C96 100N R8847K C701NF RXPD RXPD C18220P R162 22K(TR) VDD R4510K HI/LO1 HI/LO1 HI/LO2 HI/LO2 C101100N SW2PTT VDD Q20 MMBT3906 Q19 MMBT3906 C10310NF C104 10NF TX-V+ RX-V+ AMP-POWER R51 3.3K JP9 C2210NF Vin 2 Vout 3 GND 1 U4 CML2836A + C122220uF VDD R521K CS TX-SW RX-SW RX-SW VDD C92100N C90100N DATA BAT LED1 VDD R82910K(1%) R81 1M(1%) R14470R X1 32.768KHZ C83 20P C82 20P JP1 Q13 MMBT3904 R304.7K DATA DO CS CLK BAT1 Q21 MMBT3906 R731K R18100K C12410NF VCOC V/+ R83 330K C63 10NF R68 100K C46100N R78120K JP6 + C123100uF D14 1N4148 SEG0 10 COM3 11 COM2 12 COM1 13 COM0 14 DAO/P67 31 AURX/P65 33 MICI 26 MICO 27 P75 54 P60 38 CMP3/P64 34 P76 53 SEG17/P93 84 RESET 50 SEG18/P92 83 PLLC 29 P85 41 XIN 42 XOUT 43 P82 47 P81 48 P83 46 P84 45 P90 81 P80 49 P87 39 P86 40 AVDD 21 VDD 51 AVSS 30 VSS 44 P74 55 MTX/P66 32 P77 52 P91 82 TONE 28 SEG16/P94 85 RXO 22 RXI 23 INT2/P72 57 INT3/P73 56 CM2/P63 35 P61 37 PC0 60 SEG12/P57 89 SEG11/P56 90 SEG10/P55 91 SEG9 92 SEG8 93 SEG7 94 SEG6 95 SEG5 96 SEG4 97 SEG3 98 SEG2 99 SEG1 100 INT1/P71 58 INT0/P70 59 SEG15/P95 86 P96 87 CMP1/P62 P97 88 36 U1 EM78P568 R17100K D12 BA277 C47100N CS 1 CK 2 DI 3 DO 4 VSS 5 ORG 6 NC 7 VCC 8 U3 93C66 SW3Down SW1Call SW7Lock SW10 HI/LO D7 BA277 D6 BA277 D5 BA277 SW6 Range D8 BA277 SW5 UP LED2 WX-SW CLK DO C6610NF C1191UF C120 47N R47200K R2739K DATA CLK STB STB VOXDET VOXDET C6522N C581uF C1091NF C1081NF R80 39K R103470K R7910NF R101390K C138 39P C13910N C18439PF R1020R FINR FINR R93 220K C1830.5P C126100NF C1252.2UF R531K R8727K R363.3K TP5 C571uF C561uF C551uF R149100R DZ15.6V Charger-b+1 Charger-b-1 C531uFC541uFC521uF R49 3.9K R851.5K R11510K C11510NF Q17MMBT3904 PTTDET PTTDET PTTDET JP7 JP4 TP4 JP3 VC1 20p R842.2K R347K C130 10N VR1 100K TX-SW C42 100P 12345678910111213141516171819 LCD1 LCD-PR3850 WX-V+ WX-SW Q22 MMBT3906 R321K C3810NF C321uF WX-V+ WX-V+ VOL1B VOL1A WT-419VOL R3410K C45100N RSSI RSSI HI/LO2 RXPD FINR IF IN MOD MIC B MIC MOD NOAA part RXPD1 RXPD1 RXPD1 B Q16 MMBT3906 R7 1K TP7 TP3 TP8 TP10 TP13 TP14 TP12 R3547R C12 10NF R48330K R70470R R411K C142 NC B D18 BA277(3850) R11710K R1181K R11610K R432.2K 54321 JK1 ST103-06 T1 CDB455 Q12 MMBT3904 R764.7K C44220P R410K C114 24K C80470PF C5110N C11620N R7118K C121 120P V/+ VDD VDD VDD R121 56K R112 56K R119 56K R120 56K R46 56k R72 56K R1101K Q15 8550 R911K C136 39P VDD VCOC VCOC R1221.5K R123100K PR-3800 NC PR-3800 NC TP6 D9BA277 R1243.9K Q18 MBT3906 + C111 100uF R90R C157 470NF R67100K C141 6.8NF C102 1uF TP9 TP11 Q27 MMBT3904 R28 NC R60 120K R25Adjust TP15 TP16 C62 0R R310R R62NC TP17 TP18 TP19

TIMCO ENGINEERING INC. 849 NW State Road 45 Newberry, Florida 32669 http://www.timcoengr.com 888.472.2424 F 352.472.2030 email: [email protected] APPLICANT: COBRA ELECTRONICS CORPORATION FCC ID: BBOPR3800 REPORT #: C\COBRA\2355AUT5\2355AUT5TestReport.doc COVER SHEET Test Report Product Name: GMRS/ FRS TRANSCEIVERS FCC ID: BBOPR3800 Applicant: COBRA ELECTRONICS CORPORATION 6500 WEST CORTLAND STREET CHICAGO IL 60707 TIMCO ENGINEERING INC. 849 NW State Road 45 Newberry, Florida 32669 http://www.timcoengr.com 888.472.2424 F 352.472.2030 email: [email protected] APPLICANT: COBRA ELECTRONICS CORPORATION FCC ID: BBOPR3800 REPORT #: C\COBRA\2355AUT5\2355AUT5TestReport.doc TABLE OF CONTENTS TABLE OF CONTENTS LIST TEST REPORT: PAGE 1........GENERAL INFORMATION & TECHNICAL DESCRIPTION PAGE 2........TECHNICAL DESCRIPTION CONTINUED RF POWER OUTPUT PAGE 3........MODULATION CHARACTERISTICS AUDIO FREQUENCY RESPONSE GRAPH PAGE 4........MODULATION LIMITING GRAPH PAGE 5........AUDIO LOW PASS FILTER GRAPH PAGE 6........OCCUPIED BANDWIDTH PAGE 7........OCCUPIED BANDWIDTH PLOT PAGE 8........SPURIOUS EMISSIONS AT ANTENNA TERMINALS PAGE 9-10.....UNWANTED RADIATION PAGE 11.......METHOD OF MEASURING RADIATED SPURIOUS EMISSIONS PAGE 12.......FREQUENCY STABILITY PAGE 13.......LIST OF TEST EQUIPMENT EXHIBITS INCLUDED: BLOCK DIAGRAM SCHEMATICS PARTS LIST USERS MANUAL LABEL SAMPLE LABEL LOCATION EXTERNAL PHOTOGRAPHS INTERNAL PHOTOGRAPHS ALIGNMENT PROCEDURE OPERATIONAL DESCRIPTION TEST SET UP PHOTOGRAPH TIMCO ENGINEERING INC. 849 NW State Road 45 Newberry, Florida 32669 http://www.timcoengr.com 888.472.2424 F 352.472.2030 email: [email protected] APPLICANT: COBRA ELECTRONICS CORPORATION FCC ID: BBOPR3800 REPORT #: C\COBRA\2355AUT5\2355AUT5TestReport.doc Page 1 of 13 GENERAL INFORMATION REQUIRED FOR CERTIFICATION 2.1033(c)(1)(2) COBRA ELECTRONICS CORPORATION will manufacture the FCCID: BBOPR3800 GMRS/FRS COMBINATION TRANSCEIVER in quantity, for use under FCC RULES PART 95. COBRA ELECTRONICS CORPORATION 6500 WEST CORTLAND STREET CHICAGO IL 60707 2.1033 (c) TECHNICAL DESCRIPTION 2.1033(c)(3) Instruction book. A draft copy of the instruction manual is included is included in the exhibits. 2.1033(c) (4) Type of Emission: 10K5F3E 95.631 Bn = 2M + 2DK M = 3000 D = 1.75K Bn = 2(3000)+2(2250) = 10.5K GMRS Authorized Bandwidth 20.0 kHz 2.1033(c)(5) GMRS Frequency Range: 1. 462.5500 13. 462.7000 95.621 2. 462.5625 14. 462.7125 3. 462.5750 15. 462.7250 4. 462.5875 16. 467.5500 5. 462.6000 17. 467.5750 6. 462.6125 18. 467.6000 7. 462.6250 19. 467.6250 8. 462.6375 20. 467.6500 9. 462.6500 21. 467.6750 10. 462.6625 22. 467.7000 11. 462.6750 23. 467.7250 12. 462.6875 FRS Authorized Bandwidth 12.5KHz 2.1033(c)(5) FRS Frequency Range: 1. 462.5625 8. 467.5625 95.627 2. 462.5875 9. 467.5875 3. 462.6125 10. 467.6125 4. 462.6375 11. 467.6375 5. 462.6625 12. 467.6625 6. 462.6875 13. 467.6875 7. 462.7125 14. 467.7125 MHz TIMCO ENGINEERING INC. 849 NW State Road 45 Newberry, Florida 32669 http://www.timcoengr.com 888.472.2424 F 352.472.2030 email: [email protected] APPLICANT: COBRA ELECTRONICS CORPORATION FCC ID: BBOPR3800 REPORT #: C\COBRA\2355AUT5\2355AUT5TestReport.doc Page 2 of 13 2.1033(c)(6)(7) Power Output shall not exceed 0.50 Watts effective 95.639 radiated power. There can be no provisions for 95.649 increasing the power or varying the power. 2.1033(c)(8) DC Voltages and Current into Final Amplifier: FINAL AMPLIFIER ONLY FOR LOW POWER SETTING INPUT POWER: (6.0V)( 0.26A) = 1.56 Watts FOR HIGH POWER SETTING INPUT POWER: (6.0V)(0.44A) = 2.64 Watts 2.1033(c)(9) Tune-up procedure. The tune-up procedure is included in the exhibits. 2.1033(c)(10) Complete Circuit Diagrams: The circuit diagram and block diagram are included in the exhibits. 2.1033(c)(11) A photograph or a drawing of the equipment identification label is included in the exhibits. 2.1033(c)(12) Photographs(8"X10") of the equipment of sufficient clarity to reveal equipment construction and layout, including meters, labels for controls, including any view under shields. 2.1033(c)(13) Digital modulation is not allowed. 2.1033(c)(14) The data required by 2.1046 through 2.1057 is submitted below. 2.10311c)(6)(7) RF power is measured by the substitution method as 2.1046(a) outlined in TIA/EIA - 603. With a nominal battery voltage of 6.0 V, and the transmitter properly adjusted the RF output measures: GMRS - 1.37 Watts FRS - 0.134 Watts TIMCO ENGINEERING INC. 849 NW State Road 45 Newberry, Florida 32669 http://www.timcoengr.com 888.472.2424 F 352.472.2030 email: [email protected] APPLICANT: COBRA ELECTRONICS CORPORATION FCC ID: BBOPR3800 REPORT #: C\COBRA\2355AUT5\2355AUT5TestReport.doc Page 3 of 13 2.1047(a)(b) Modulation characteristics: AUDIO FREQUENCY RESPONSE The audio frequency response was measured in ac- cordance with TIA/EIA Specification 603. The audio frequency response curve is shown on the next page. The audio signal was fed into a dummy microphone circuit and into the microphone connector. The input required to produce 30 percent modulation level was measured. See plot below. AUDIO FREQUENCY RESPONSE PLOT GOES HERE Audio Frequency Response Plot MaxFreq.at 1 Color Line StyleThickDataAxis Cyan Solid 1Anlr.Level Left -4 +1 -3 -2 -1 +0 d B 100 5k200300400500600800 1k Hz TIMCO ENGINEERING INC. 849 NW State Road 45 Newberry, Florida 32669 http://www.timcoengr.com 888.472.2424 F 352.472.2030 email: [email protected] APPLICANT: COBRA ELECTRONICS CORPORATION FCC ID: BBOPR3800 REPORT #: C\COBRA\2355AUT5\2355AUT5TestReport.doc Page 4 of 13 2.1047(b) Audio input versus modulation The audio input level needed for a particular percentage of modulation was measured in accordance with TIA/EIA Specification 603. The audio input curves versus modulation are on the following pages. Curves are provided for audio input frequencies of 300, 1000, and 2500 Hz. See the plot below. MODULATION LIMITING GRAPH Modulation Limiting 2.5KHz (Green), 1.0KHz (Blue), and 300Hz modulation limiting.at1 Colo…

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