LA
VHF: 29 - 50 MHz
Page 1: ...LA LA VHF 29 50 MHz...
Page 2: ...eater Thismanualisintended forusebyqualifiedtechniciansandincludesallnecessaryinformationpertainingtothe SVR 200 operation circuit design and maintenance Changes that occur after date of printing will...
Page 3: ...ese regulations Do not operate the SVR 200 without an antenna or appropriate RF load connected to the antenna connector Do not operate the SVR 200 in the presence of unshielded electrical blasting cap...
Page 4: ...Acceptance LRUSVR 200LA Industry Canada Approval 2390XXXXXX Receiver Frequency Range 29 50MHz RF sensitivity 35 V Squelch sensitivity 2 Vto2 Vadjustable Modulation acceptance 7 5 Selectivity 60dB Spu...
Page 5: ...ase transmissions key the mobile radio and repeat portable to base Thisallowsthehandheldtorespondduringrepeaterhangtimeorduringfullduplexinterconnect calls Priority sampling can be enabled disabled th...
Page 6: ...operatortoalertthemthatthesystem is busy The SVR 200 will automatically retry every 5 seconds and send busy tone to the handheld with each unsuccessful attempt to indicate progress of the call attempt...
Page 7: ...If JP3 is shorted while power is applied the SVR 200 will go into transmit modeandsendlocktoneforaslongasthejumperisshorted Removethejumpertoreturntonormaloperation J4 Used to internally tie the loca...
Page 8: ...holdlevelandshouldbesetforhalfwaybetweenthemuteandunmutelevels at pin 7 Example If Pin 7 is connected to a point that goes from 0VDC mute to 5VDC unmute set RV1 for 2 5VDC and program the mobile COR l...
Page 9: ...200 is programmed for sub audible encode adjust RV6 CTCSS for minimum Adjust RV8 repeater deviation for 95 deviation Adjust RV7 for 60 deviation Remove J3 4 Mobile COR Measure the voltage at TP2 on t...
Page 10: ...put to 3 V and ensure that the repeater COR LED is off 3 Transmit audio output Adjust the service monitor RF output for 1mV Turn the CTCSS modulation on and set for 15 deviation Confirm that the repea...
Page 11: ...Page10 SVR 200 Service Manual Mobile Radio Communications Monitor A Communications Monitor B SVR 200 Interface Cable Figure4...
Page 12: ...ct sub audio decode cannot be disabled Common data Controls all of the options and input polarities of the SVR 200 Make sure all of the settings are correct for the type of mobile radio the repeater i...
Page 13: ...ling Enables or disables the pri sampling feature of the SVR 200 If used in multi vehicle applications this must be enabled for proper operation During base to portable repeat mode the SVR 200 transmi...
Page 14: ...by the controller board with a threshold voltage level for squelch setting Transmitter The output of the VCO is buffered by U5 and amplified by U6 The output of U6 drives the RF driver Q6 The collect...
Page 15: ...ve form will be a function of the difference between the incoming signal frequency and the decode frequency output by the microprocessor The signal is buffered by U3C and amplified by U3A before being...
Page 16: ...P2 5 Repeater COR input active low RSSI output from the RF module is sent to threshold detector U2D for comparison with the squelch setting at RV9 R47 and R70 provide hysteresis to prevent chatter Rep...
Page 17: ...o detect that the mobile transmitter is actually on the air The input is buffered by Q10 and the polarity of the signal is determined by PC programming WR Turns the Rx 5V line on or off to the RF PCB...
Page 18: ...Page17 SVR 200 Service Manual Notes This Page Intentionally left blank...
Page 19: ...0 1 14 position vertical header 7300 83 0114 P3 2 5mm RA programming jack 7401 02 0250 P4 3 5mm RA speaker jack 7401 02 0051 Q1 Q2 Q6 Q7 Q9 Q10 2N4401 NPN transistor SOT23 3010 01 4401 Q3 IRF 9540 P C...
Page 20: ...10 11 0450 U12 AT89C52 12JC Microprocessor 3610 02 8952 U13 LM321opamp 3410 12 0321 X1 4 032 MHz HC18 U 6000 07 4032 VAR1 18V MOV 2580 02 0018 Extruded aluminium case 8100 01 5010 Aluminiumendpanel 82...
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Page 22: ...5 25 2005 04 12 57p f 1 35 n eagle projects SVR200I SVR200 BRD...
Page 23: ...18 S 227 5008 C9 47p C9 47p R17 1K8 R17 1K8 L12 L12 RV1 RV1 L50 L50 L27 L27 C42 100pF C42 100pF C40 1N0 C40 1N0 L37 L37 C47 01 C47 01 C15 68p C15 68p C18 82p C18 82p C85 100p C85 100p R6 56K R6 56K C1...
