RR4NBSTL10Studio to Transmitter Link

NEXUS BROADCASTNEXUS BROADCAST NXLT – NXLR USAGE INSTRUCTION NEXUS BROADCASTNEXUS BROADCAST Connected a 50 Ù load or 50 Ù antenna to the RF output, connect the equipment into a mains supply (100÷240 VAC) with earth point. The transmitter equipment is factory pre-set to 0.0 W. Switch ON the power switch and the yellow V POWER led will light. The Display will show: After 3 seconds the green PLL LOCK led will light and the Display will show an increasing bar, after a further 5 seconds the green ON AIR led will light and there will be output power. At this point the Display will show the next parameter for the transmitter: • Level Modulation (MOD > ); • Forward Power (FRW 5.0W); • Reflected Power (RFL 0.1W); instead for the receiver: • Level Modulation (MOD > ); • Level Signal(50dBuV). WAIT SELECT SET WAIT SELECT SET MOD > FRW 5.0W RFL 0.1W SELECT SET NEXUS BROADCASTNEXUS BROADCAST The default frequency is 940.000 or 960.000 MHz. To display the frequency push the SET key. In order to display the parameter push the SELECT key. Display Password The Password mode is factory set to enable, and is not possible change this SET. The default password is 1 2 3. The WAIT of changing the password is as follows: • Press for 3 seconds the SELECT key; • Press the SELECT key for move the underscore character position at the required digit, and press the SET key to confirm the digit. Carry out the same operation for the two remaining digits. PASSWORD 0 1 2 3 4 5 6 7 8 9 SELECT SET PASSWORD 0 1 2 3 4 5 6 7 8 9 SELECT SET * PASSWORD 0 1 2 3 4 5 6 7 8 9 SELECT SET * ** MOD > SGN 50dBuV SELECT SET NEXUS BROADCASTNEXUS BROADCAST • If the password is corrected press SET key to confirm, otherwise press SELECT key to leave the choice. If the password is not corrected an error is displayed: After few seconds display will show again the parameters. • When the password is corrected the display will show: To change the password press the SET key. To change the frequency press the SELECT key. • For changing the password proceed at the same method for the required password: The confirmation password will be required. CONFIRM (Y/N) ? N=SEL. Y=SET. SELECT SET NEW PASS . = SEL . NEW FREQ . = SET . SELECT SET ERROR PASSWORD SELECT SET NEW PASSWORD 0 1 2 3 4 5 6 7 8 9 SELECT SET CONFIRMATION 0 1 2 3 4 5 6 7 8 9 SELECT SET NEXUS BROADCASTNEXUS BROADCAST If the password is corrected the display will show: If the confirmation password is wrong the display will show: IMPORTANT NOTE ! BE CAREFULLY ! Once the password is set, it must be remembered otherwise neither can the frequency be changed or a new password entered. Display Change of Frequency. • Press 3 seconds the SELECT key and put the correct password, at this point press again the SELECT key: • Press the SELECT key to change the digit and press the SET key to confirm the digit. STORED NEW PASSWORD SELECT SET ERROR CONFIRMATION SELECT SET NEW PASS . = SEL . NEW FREQ . = SET . SELECT SET FREQUENCY ? MHz 950.000 SELECT SET NEXUS BROADCASTNEXUS BROADCAST The underscore character move the position one place to the left. When the five digit is changed the further press SET key confirm the new frequency. At this operation follows the WAIT cycle and after this the display will show the parameters: After 7 minutes the display light switch off and the display will show: MOD > FRW 5.0W RFL 0.1W SELECT SET N E X U S MHz 950.000 SELECT SET

VCO AUDIO INPUT RF AMPLIFIER PLL TCXO 12.8 MHz LPF DIRECTIONAL COUPLER POWER SUPPLY PROTECTION MICROCONTROLLER DISPLAY N E X U S MPX MONO SCA VDCVAC MHZ RF OUTPUT ADJ *** *** Mod. NXLT 1.0 FUNCTIONAL SCHEMATIC B 11Monday, January 27, 2003 Title SizeDocument NumberRev Date:Sheetof NEXUS BROADCASTNEXUS BROADCAST

1-RFSAMPLER10WOUT=0dBm 2-POWERSTAGESUPPLYCORRECTOPERATIONYELLOWINDICATOR 3-PLLLOCKFREQUENCYCONTROLCORRECTOPERATIONCIRCUITGREENINDICATOR 4-PRESENCEOFRFPOWERATFREQUENCYSETONOUTPUTCONNECTORGREENINDICATOR 5-RFOUTPUTPOWERADJUSTINGFROM0TOOVER10W 6-LCDMULTIMETERDISPLAYSHOWING: -operationalfrequency -modulation -forwardrfpower -reflectedpower 7-8-THESEPUSHBUTTONSALLOWTOTOSELECTONLCDDISPLAYTHEFOLLOWINGMENU: -displayparameter -password -changeofoperationalfrequency 9-MAINSSWITCH 12 34 5 6 7 8 9

MAINS110-220VAC ACFUSE1A INTERLOCK I/O RS232 MPXINMONO RF OUTPUT 50 75 S 1GND 2 3 SCA3SCA2SCA1 6 7 8 1-MAINSSUPPLYCONNECTOR 2-ACFUSE1A 3- -FAN 5-DB9PININPUT/OUTPUTCONNECTORFORTELEMETRY 6-7-8- 9-10-11-SCAINPUTADJUSTINGLEVELS 12-XLRFEMALEBALANCEDMODEMONOAUDIOINPUT 13-MONOINPUTADJUSTINGLEVEL 14-BNCFEMALEFORTHECOMPOSITEMPXINPUT 15-MPXINPUTADJUSTINGLEVEL 16-NFEMALEFORRFOUTPUTRFPOWERON50OHMLOAD BNCFEMALEFORCONNECTIONOFTHEINTERLOCKLOOP ACONNECTIONTOGROUNDINHIBITRFPOWER 4 BNCFEMALESFORSUBCARRIERSGENERATORSINPUTS 2 3 4 5 9 10 11 12 13 14 15 1 16

FM LINK TRANSMITTER NBESTL-10 Technical features of RF driver section and RF final power stage The driver stage is placed in the main board and it is composed by three active devices, the first one is a BFR96S working on AB class that has an output of 0,2W, then the driving device is an LDMOS mod. PD55003 by ST Microelectronics, and then the final stage is again an LDMOS device mod. PD55025. Below the technical working specifications of PD55003 and PD 55025: PD55003 Vcc 15 V Idq 5 mA IDC at Full Power 500 mA Power Gain >12 dB Output Power > 600mW Frequency range940 - 960 MHz Polarization B class PD55025 Vcc 15 V Idq 10 mA IDC at Full Power 1.8 A Power Gain >12 dB Output Power > 10 W Frequency range940 - 960 MHz Polarization B class The signal, after going out from the final power stage goes to a low pass filter made by in air wounded inductances in order to have a good Q, afterthen the signal passes trough a directional coupler for sampling the forward and reflected RF power. Below the low pass filter specifications: In band insertion loss < 0.5 dB Insertion Loss @ 1.8GHz > 42dB In band return loss < - 25dB Here below we can see a photo of the NBESTL10 RF module amplifier

FM LINK TRANSMITTER NBESTL-10 Technical features of RF driver section and RF final power stage The driver stage is placed in the main board and it is composed by three active devices, the first one is a BFR96S working on AB class that has an output of 0,2W, then the driving device is an LDMOS mod. PD55003 by ST Microelectronics, and then the final stage is again an LDMOS device mod. PD55025. Below the technical working specifications of PD55003 and PD 55025: PD55003 Vcc 15 V Idq 5 mA IDC at Full Power 500 mA Power Gain >12 dB Output Power > 600mW Frequency range940 - 960 MHz Polarization B class PD55025 Vcc 15 V Idq 10 mA IDC at Full Power 1.8 A Power Gain >12 dB Output Power > 10 W Frequency range940 - 960 MHz Polarization B class The signal, after going out from the final power stage goes to a low pass filter made by in air wounded inductances in order to have a good Q, afterthen the signal passes trough a directional coupler for sampling the forward and reflected RF power. Below the low pass filter specifications: In band insertion loss < 0.5 dB Insertion Loss @ 1.8GHz > 42dB In band return loss < - 25dB Here below we can see a photo of the NBESTL10 RF module amplifier

NEXUS BROADCASTNEXUS BROADCAST Rif.ValueRemarksDescriptionCode C139pFSMD Multilayer Ceramic Capacitor C239pFSMD Multilayer Ceramic Capacitor C339pFSMD Multilayer Ceramic Capacitor C439pFSMD Multilayer Ceramic Capacitor C539pFSMD Multilayer Ceramic Capacitor C639pFSMD Multilayer Ceramic Capacitor C739pFSMD Multilayer Ceramic Capacitor C839pFSMD Multilayer Ceramic Capacitor C90.1MFSMD Multilayer Ceramic Capacitor C1039pFSMD Multilayer Ceramic Capacitor C1139pFSMD Multilayer Ceramic Capacitor C120.1MFSMD Multilayer Ceramic Capacitor C1360pFTrimmer Polyethylene Film Capacitor C1418pFSMD Multilayer Ceramic Capacitor C1510pFSMD Multilayer Ceramic Capacitor C16470pFSMD Multilayer Ceramic Capacitor C171000MF16VAluminium Electrolytic Capacitor C18470pFSMD Multilayer Ceramic Capacitor C19100MF25VAluminium Electrolytic Capacitor C20470pFSMD Multilayer Ceramic Capacitor C210.1MFSMD Multilayer Ceramic Capacitor C2222MF16VSMD Aluminium Electrolytic Capacitor C23470MF35VAluminium Electrolytic Capacitor C24470MF35VAluminium Electrolytic Capacitor C252.2MF50VSMD Multilayer Ceramic Capacitor C2622MF16VSMD Aluminium Electrolytic Capacitor C27NC C284.7nFPolypropylene Capacitor C29100MF25VAluminium Electrolytic Capacitor C306.8nFPolypropylene Capacitor C31100MF25VAluminium Electrolytic Capacitor C3247pFSMD Multilayer Ceramic Capacitor C3347pFSMD Multilayer Ceramic Capacitor C34470MF35VAluminium Electrolytic Capacitor C35470MF35VAluminium Electrolytic Capacitor C36470MF35VAluminium Electrolytic Capacitor C37220MF35VAluminium Electrolytic Capacitor C380.1MFSMD Multilayer Ceramic Capacitor C390.1MFSMD Multilayer Ceramic Capacitor C400.1MFSMD Multilayer Ceramic Capacitor C410.1MFSMD Multilayer Ceramic Capacitor C4222MF16VSMD Aluminium Electrolytic Capacitor C430.1MFSMD Multilayer Ceramic Capacitor C440.1MFSMD Multilayer Ceramic Capacitor C4522MF16VSMD Aluminium Electrolytic Capacitor C460.1MFSMD Multilayer Ceramic Capacitor C470.1MFSMD Multilayer Ceramic Capacitor C481000MF16VAluminium Electrolytic Capacitor C490.1MFSMD Multilayer Ceramic Capacitor Part List Schematic : TSG1A NEXUS BROADCASTNEXUS BROADCAST Rif.ValueRemarksDescriptionCode C5047MF35VSMD Aluminium Electrolytic Capacitor C5147MF35VSMD Aluminium Electrolytic Capacitor C520.1MFSMD Multilayer Ceramic Capacitor C5322MF16VSMD Aluminium Electrolytic Capacitor C540.1MFSMD Multilayer Ceramic Capacitor C5510nFSMD Multilayer Ceramic Capacitor C5647MF35VSMD Aluminium Electrolytic Capacitor C5747MF35VSMD Aluminium Electrolytic Capacitor C580.1MFSMD Multilayer Ceramic Capacitor C5922MF16VSMD Aluminium Electrolytic Capacitor C600.1MFSMD Multilayer Ceramic Capacitor C6147MF35VSMD Aluminium Electrolytic Capacitor C620.1MFSMD Multilayer Ceramic Capacitor C63220MF35VAluminium Electrolytic Capacitor C64220MF35VAluminium Electrolytic Capacitor C650.1MFSMD Multilayer Ceramic Capacitor C660.1MFSMD Multilayer Ceramic Capacitor C672.2MF50VSMD Aluminium Electrolytic Capacitor C680.1MFSMD Multilayer Ceramic Capacitor C69100pFSMD Multilayer Ceramic Capacitor C702.2MF50VSMD Aluminium Electrolytic Capacitor C7147MF16VSMD Multilayer Ceramic Capacitor C722.2MF50VSMD Multilayer Ceramic Capacitor C730.1MFSMD Multilayer Ceramic Capacitor C740.1MFSMD Multilayer Ceramic Capacitor C752.2MF50VSMD Aluminium Electrolytic Capacitor C760.1MFSMD Multilayer Ceramic Capacitor C7722MF16VSMD Aluminium Electrolytic Capacitor C7822MF16VSMD Aluminium Electrolytic Capacitor C790.1MFSMD Multilayer Ceramic Capacitor C800.1MFSMD Multilayer Ceramic Capacitor C811nFSMD Multilayer Ceramic Capacitor C82NC C830.1MFSMD Multilayer Ceramic Capacitor C84470MF35VAluminium Electrolytic Capacitor C8547MF16VSMD Aluminium Electrolytic Capacitor C86470MF35VAluminium Electrolytic Capacitor C8722MF16VSMD Aluminium Electrolytic Capacitor C882.2MF35VSMD Aluminium Electrolytic Capacitor C89NC C9022MF16VSMD Aluminium Electrolytic Capacitor C9147MF16VSMD Aluminium Electrolytic Capacitor C921nFSMD Multilayer Ceramic Capacitor C9322MF16VSMD Aluminium Electrolytic Capacitor C941nFSMD Multilayer Ceramic Capacitor C952.2MF50VSMD Aluminium Electrolytic Capacitor C9622MF16VSMD Aluminium Electrolytic Capacitor C97NC C980.1MFSMD Multilayer Ceramic Capacitor C990.1MFSMD Multilayer Ceramic Capacitor C100NC C101NC NEXUS BROADCASTNEXUS BROADCAST Rif.ValueRemarksDescriptionCode C102NC C103NC C104NC C105NC C106NC C107NC C108NC C109NC C110470pFSMD Multilayer Ceramic Capacitor C111NC C112NC C113NC C114NC C115NC C116NC C11739pFSMD Multilayer Ceramic Capacitor C11839pFSMD Multilayer Ceramic Capacitor C1191nFSMD Multilayer Ceramic Capacitor C120NC C121NC C122NC C123NC C12447pFSMD Multilayer Ceramic Capacitor C1250.1MFSMD Multilayer Ceramic Capacitor C1260.1MFSMD Multilayer Ceramic Capacitor C12747MF16VSMD Aluminium Electrolytic Capacitor C12847MF16VSMD Aluminium Electrolytic Capacitor C12947MF16VSMD Aluminium Electrolytic Capacitor C13010MF16VSMD Aluminium Electrolytic Capacitor C13110MF16VSMD Aluminium Electrolytic Capacitor C1320.1MFSMD Multilayer Ceramic Capacitor C1330.1MFSMD Multilayer Ceramic Capacitor C13447MF16VSMD Aluminium Electrolytic Capacitor C13510pFSMD Multilayer Ceramic Capacitor C1361pFSMD Multilayer Ceramic Capacitor C1371nFSMD Multilayer Ceramic Capacitor C1381nFSMD Multilayer Ceramic Capacitor C1393.3pFSMD Multilayer Ceramic Capacitor C14010MF16VSMD Aluminium Electrolytic Capacitor C1410.1MFSMD Multilayer Ceramic Capacitor C1420.5 ÷ 4.5 pFTrimmer Ceramic Capacitor C1431pFSMD Multilayer Ceramic Capacitor C1443.3pFSMD Multilayer Ceramic Capacitor C14510pFSMD Multilayer Ceramic Capacitor C1461pFSMD Multilayer Ceramic Capacitor C14710pFSMD Multilayer Ceramic Capacitor C14810pFSMD Multilayer Ceramic Capacitor C14910pFSMD Multilayer Ceramic Capacitor C1500.1MFSMD Multilayer Ceramic Capacitor C1511pFSMD Multilayer Ceramic Capacitor C1520.1MFSMD Multilayer Ceramic Capacitor C1531pFSMD Multilayer Ceramic Capacitor NEXUS BROADCASTNEXUS BROADCAST Rif.ValueRemarksDescriptionCode L1CHOKESuppression Choke L2CHOKESuppression Choke L3CHOKE…

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NEXUS BROADCASTNEXUS BROADCAST Rif.ValueRemarksDescriptionCode C110MF25VSMD Tantalum Capacitor C233pFSMD Multilayer Ceramic Capacitor C30.1MFSMD Multilayer Ceramic Capacitor C40.1MFSMD Multilayer Ceramic Capacitor C633pFSMD Multilayer Ceramic Capacitor C70.1MFSMD Multilayer Ceramic Capacitor C8100MF6VSMD Tantalum Capacitor C91MF16VSMD Tantalum Capacitor C100.1MFSMD Multilayer Ceramic Capacitor C111MF16VSMD Tantalum Capacitor C121MF16VSMD Tantalum Capacitor C131MF16VSMD Tantalum Capacitor C141MF16VSMD Tantalum Capacitor R110K1/4WSIL Thick Film Resistor Network R210K1/4WSMD Thick Film Resistor R310K1/4WSMD Thick Film Resistor R410K1/4WSMD Thick Film Resistor R510K1/4WSMD Thick Film Resistor R610K1/4WSMD Thick Film Resistor R710K1/4WSMD Thick Film Resistor R810K1/4WSMD Thick Film Resistor R910K1/4WSMD Thick Film Resistor R1010K1/4WSMD Thick Film Resistor R111K21/4WSMD Thick Film Resistor R126K81/4WSIL Thick Film Resistor Network Q1BC557Bipolar Transistor U1ADC08234A/D Converter U2AT89S8252Microporcessor U3MAX232Special Function Integrated Circuit U5MAX812LSpecial Function Integrated Circuit LCD1V20350LCD Display Y111.0592 MHzQuartz Crystal J1DJ2PCB Pin Strip Header J2DJ3PCB Pin Strip Header J3CON16Male PCB Mounting Header Part List Schematic : MICRO00A

NEXUS BROADCASTNEXUS BROADCAST Rif.ValueRemarksDescriptionCode C10.1MFCeramic Lead Through Capacitor C20.1MFCeramic Lead Through Capacitor C30.1MFCeramic Lead Through Capacitor C40.1MFCeramic Lead Through Capacitor C52.2MF100VAluminium Electrolytic Capacitor C60.1MFSMD Multilayer Ceramic Capacitor C70.1MFSMD Multilayer Ceramic Capacitor C82.2MF100VAluminium Electrolytic Capacitor C90.1MFSMD Multilayer Ceramic Capacitor C100.1MFSMD Multilayer Ceramic Capacitor C11470pFCeramic Disc Capacitor NPO C122.2MF100VAluminium Electrolytic Capacitor C130.1MFSMD Multilayer Ceramic Capacitor C140.1MFSMD Multilayer Ceramic Capacitor C15470pFCeramic Disc Capacitor NPO C1610pFCeramic ATC Capacitor C176.8pFCeramic Disc Capacitor NPO C1810pFCeramic ATC Capacitor C196.8pFCeramic Disc Capacitor NPO C200÷10pFTrimmer Ceramic Capacitor C2110pFCeramic ATC Capacitor C2210pFCeramic ATC Capacitor C233.3pFCeramic Disc Capacitor NPO C243.3pFCeramic Disc Capacitor NPO C2510pFCeramic ATC Capacitor C2610pFCeramic ATC Capacitor C2710pFCeramic ATC Capacitor C280÷10pFTrimmer Ceramic Capacitor C296.8pFCeramic Disc Capacitor NPO C3010pFCeramic ATC Capacitor C311nFSMD Multilayer Ceramic Capacitor C320.1MFTrimmer Ceramic Capacitor C3310pFCeramic ATC Capacitor C340÷10pFTrimmer Ceramic Capacitor C351pFCeramic Disc Capacitor NPO C361.8pFCeramic Disc Capacitor NPO C371nFSMD Multilayer Ceramic Capacitor C380.1MFSMD Multilayer Ceramic Capacitor R139K1/4WCarbon Film Resistor R215WCeramic Cased Wirewound Resistor R31.85WCeramic Cased Wirewound Resistor R42.25WCeramic Cased Wirewound Resistor R533K1/4WCarbon Film Resistor R610K1/4WSMD Cermet Skeleton Trimmer Resistor R710K1/4WSMD Cermet Skeleton Trimmer Resistor R83303WMetal Film Power Resistor R93301/4WCarbon Film Resistor R101002WMetal Film Power Resistor Part List Schematic : FM900-10-C NEXUS BROADCASTNEXUS BROADCAST Rif.ValueRemarksDescriptionCode R113303WMetal Film Power Resistor R123301/4WCarbon Film Resistor R1310K1/4WCarbon Film Resistor R141001/4WSMD Thick Film Resistor R151001/4WSMD Thick Film Resistor R16471/4WSMD Thick Film Resistor R17471/4WSMD Thick Film Resistor L1D4/T4Enamelled Copper Wire L2D4/T4Enamelled Copper Wire D1BA481Diode Schottky D2BA481Diode Schottky Q1TIP41CPower Bipolar Transistor Q2PD55025RF MOSFET Q3PD55003RF MOSFET Q4BFR96RF Bipolar Transistor MLIN1STRIPLINEMicrostrip Transmission Line MLIN2STRIPLINEMicrostrip Transmission Line MLIN3STRIPLINEMicrostrip Transmission Line MLIN4STRIPLINEMicrostrip Transmission Line MLIN5STRIPLINEMicrostrip Transmission Line MLIN6STRIPLINEMicrostrip Transmission Line MLIN7STRIPLINEMicrostrip Transmission Line

NEXUS BROADCASTNEXUS BROADCAST Rif.ValueRemarksDescriptionCode R11KCarbon Film Resistor R21KCarbon Film Resistor R31KCarbon Film Resistor R4NC R50Carbon Film Resistor R60Carbon Film Resistor R7NC R810KMulti Turn Cermet Trimmer Resistor Panel Mount D1V PowerYELLOWLight Emitting Diode D2PLL LockGREENLight Emitting Diode D3On AirGREENLight Emitting Diode J1DJ2x5PCB Pin Strip Header Part List Schematic : TFRP1

TUNE UP PROCEDURE NBESTL10 The NBE Fm exciter series utilizes state of the art technology, therefore there is nothing for the end user to “tune” and setup is a breeze. Please consult the users manual for setting the frequency via the front panel controls. Power is adjusted by a small potentiometer located on the front of the unit. Power may be varied from zero to ten watts. Power level as well as reflected power is indicated on the LCD display on the front of the unit. Modulation adjust is adjusted in the same manner by a potentiometer on the back of the unit. Modulation for the main channel, SCA, etc are adjusted with a small jewelers tip screwdriver. Modulation levels for the composite input can be monitored on the front Panel LCD display. The unit will operate on 90 – 220 VAX 60 or 50 HZ. This is automatically adjusted in the units power supply. No user intervention is required.

WARNING: RF Hazard Information THE ANTENNA(S) USED FOR THIS TRANSMITTER MUST BE FIXED-MOUNTED ON OUTDOOR PERMANENT STRUCTURES. RF EXPOSURE COMPLIANCE IS ADDRESSED AT THE TIME OF LICENSING, AS REQUIRED BY THE RESPONSIBLE FCC BUREAU(S) INCLUDING ANTENNA CO-LOCATION REQUIREMENTS OF PARA. 1.1307(B)(3). WARNING! THE VOLTAGES AND CURRENTS IN THIS EQUIPMENT ARE DANGEROUS. PERSONEL MUST, AT ALL TIMES, OBSERVE SAFETY WARNINGS, INSTRUCTIONS, AND ANY REGULATIONS. This owner’s manual is intended as a general guide for trained and qualified personnel who are aware of the dangers that are inherent in the handling and operation of potentially hazardous electrical and electronic circuits. It is not the intent of this manual to provide a complete set of safety instructions or precautions that should already be understood by trained or experienced personnel in using this or other types of electronic equipment. The installation, operation, and maintenance of this equipment involves risks to personnel and also to the equipment. Nexus Broadcast Products shall not be responsible for injury or damage that is the result of improper procedures or use by persons improperly trained or lacking the knowledge to perform associated tasks. All local codes for building, safety, fire, or related standards must be observed. Consult local authorities for the standards for the area or region where the equipment will be installed and put in use. WARNING! AT ALL TIMES DISCONECT AC/MAINS POWER BEFORE OPENING COVERS, DOORS, ENCLOSURES, PANELS, OR PROTECTIVE SHIELDS THAT EXPOSE LIVE CIRCUITS. USE ANY GROUNDING STICKS OR OTHER SHORTING PROBES TO DRAIN ENERGY FROM CIRCUITS BEFORE SERVICING. NEVER PERFORM MAINTENANCE, MAKE ADJUSTMENTS, OR SERVICE THE EQUIPMENT WHEN ALONE OR FATIGUED. WARNING! IF ELECTROLYTIC OR OIL FILLED CAPACITORS ARE UTILIZED IN THE EQUIPMENT AND THE COMPONENT APPEARS LEAKY, OR IS BULGING, OR IF THE CASE OR COVERING OF THE COMPONENT APPEARS DAMAGED OR DISTRESSED ALLOW SUFFICIENT TIME FOR THE UNIT TO COOL OR FULLY DISCHARGE BEFORE SERVICING. SERVICING HOT OR LEAKY CAPACITORS CAN CAUSE A RUPTURE OF THE CASE AND POSSIBLE INJURY. Should accident or injury occur personnel engaged in the installation, operation, or service of the equipment should seek proper medical attention. It is advisable that such personnel have familiarity with first-aid practices.

VCO AUDIO INPUT RF AMPLIFIER PLL TCXO 12.8 MHz LPF DIRECTIONAL COUPLER POWER SUPPLY PROTECTION MICROCONTROLLER DISPLAY N E X U S MPX MONO SCA VDCVAC MHZ RF OUTPUT ADJ *** *** Mod. NXLT 1.0 FUNCTIONAL SCHEMATIC B 11Monday, January 27, 2003 Title SizeDocument NumberRev Date:Sheetof NEXUS BROADCASTNEXUS BROADCAST

N E X U S MHz *** *** Mod. NXLT 1.0 GENERAL SCHEMATIC B 11Monday, January 27, 2003 Title SizeDocument NumberRev Date:Sheetof NEXUS BROADCASTNEXUS BROADCAST MICROCONTROLLER SIGNAL/PROG. SEL./SET. POWER SUPPLY +24VGND L GND EARTH N EMC FILTER L IN GND EARTH N IN L O UT N OUT PUSH BUTTOM PANEL SEL./SET. Main Board +24V LOCK GND MONO+ MO NO- GND M ONO MPX 1 SC A1 SC A2 SC A3 RF OUT SIGNAL/PROG. LED TX (RS232) RX (RS232) COM (RS232) FWD RFL +24V AMP PW ADJ Rext A Rext B LED PANEL LEDRF ADJ RF AMPLIFIER RF OUTPUTRF INPUT +24V GND POWER METER REFLECTED METER PW ADJ COM TXRX TX COM RX J2 MPX1 J4 SCA2 J5 SCA1 JR1 MONO 21 3 4 S1AC MALE SW1 ON/OFF 1 2 3 4 F1 1A P1 RS232 594837261 R1 10 / 5W J6 INTERLOCK J3 SCA3 J1 RF OUTPUT FAN1 12 COAX1 RG303 COAX2 RG316 R2 10K

Mod. EMC-02 1.0 EMI FILTER A 11Monday, January 13, 2003 Title SizeDocument NumberRev Date:Sheet of NEXUS BROADCASTNEXUS BROADCAST C2 1uF / 350V L1 0.8mH L2 0.8mH C1 2.2nF / 350V C3 2.2nF / 350V L IN GND EARTH N IN L OUT GND EARTH N OUT

RF OUT TEMPERATURE C Mod. TSG1A 1.0 TX LINK BOARD A3 11Thursday, December 18, 2003 Title SizeDocument NumberRev Date:Sheet of NEXUS BROADCASTNEXUS BROADCAST PLL +15V GND OUT VCO +5VLE GND DATA DATA CLOCK GND RF IN LED LOCK RF IN PLL LOCK RF DRIVER SCHEMATIC7 RF IN GND RF IN GND RF OUT RF OUT +15V GND RF PLL -15V VCO +15V GND V-PLL BF IN RF OUT GND RF OUT GND BF IN RF PLL GND RF PLL Protection +5V +15V GND -15V FORWARD POWER RF FWD METER RF RFL METER Rext 2A Rext 2B Rext 2C Interlock Driver REFLECT POWER Power Supply VC GND -15V +15VVA +5V VD VB +24V Audio BF OUT VC VB GND VA VD +5V GND BF OUT VU METER MONO + GND MONO MONO - SCA 1 GND SCA 1 SCA 2 SCA 3 MPX GND SCA 2 GND SCA 3 GND MPX +15V -15V GND DATA RX - RS232 GND DATA PLL LOCK DATA LE LE DATA PLL LOCK CLOCK CLOCK RX - RS232 TX - RS232 +24V +24V TX - RS232 FWD PWR Interlock Temperature FWD PWR Interlock Rext 2A RF RFL METER RFL PWR RF FWD METER RFL PWR RF RFL METER Rext 2C Driver Rext 2B Driver RF FWD METER LED LOCK Rext 2A Rext 2B LED LOCK +24V Temperature Rext 2C +5V +5V -15V VU METER -15V +5V +5V VU Meter -15V +5V +15V +15V +15V +15V +15V +15V +15V +5V -15V R2 10K L4 10uH L13 CHOKE C118 39pF C117 39pF L5 10uH D2 1N4148 L3 CHOKE C6 39pF TERM17 +24V C5 39pF J5 DJ3 C11 39pF C7 39pF C8 39pF C9 0.1MF J6 SMA 1 2 C12 0.1MF D1 1N4148 TERM2 Intelock TERM1 GND Intelock R1 2K2 1 16 J2 DJ2x8 C1 39pF 1 J3 DJ3 C2 39pF C10 39pF TERM18 GND TERM3 SCA 1 TERM4GND SCA 1 TERM5 SCA 2 TERM7 SCA 3 TERM6 GND SCA 2 TERM14 FWD PWR TERM15 RFL PWR TERM16 DRIVER V. TERM8 GND SCA 3 TERM9 MONO + TERM10 GND MONO TERM11 MONO - TERM12 MPX TERM13 GND MPX C3 39pF C4 39pF L2 CHOKE L1 CHOKE 1 10 J4 DJ2x5 J1 POWER Rext 2 10KRF ADJ. RFL SWR FWD Mod. PROT 1A 1.0 Protection & Meter A3 11Thursday, December 18, 2003 Title SizeDocument NumberRev Date:Sheetof NEXUS BROADCASTNEXUS BROADCAST +15V +5V +15V -15V +5V +15V +15V +5V+5V R58 4K7 Q4 BC547 1 2 3 R62 10K C66 0.1MF R59 47K +C67 2.2MF / 50V J10 DJ3 C69 1nF R60 39K R64 18K R57 47K R67 47K R66 8K2 + - U9A LM358 3 2 1 + - U8B LM358 5 6 7 + C71 47MF / 16V R72 12K + - U8A LM358 3 2 1 8 4 C74 0.1MF C68 0.1MF R70 100K R73 12K R53 47K R55 47K R68 12K R77 12K R79 12K R75 50K C73 0.1MF R71 12K R76 100K R74 12K + C70 2.2MF / 50V R69 50K +C75 2.2MF / 50V R78 12K C76 0.1MF +C72 2.2MF / 50V R54 47K R61 0 R63 12K R65 12K R56 47K + - U9B LM358 5 6 7 8 4 Q3 TIP41C +5V +15V GND -15V FORWARD POWER RF FWD METER RF RFL METER Rext 2A Rext 2B Rext 2C Interlock Driver REFLECT POWER Rext 1 10 - 5W Mod. POWER S 1A 1.0 Power Supply A3 11Thursday, December 18, 2003 Title SizeDocument NumberRev Date:Sheet of NEXUS BROADCASTNEXUS BROADCAST L8 22uH + C64 220MF / 35V + C35 470MF / 35V J9 DJ2 C40 0.1MF + C37 220MF / 35V C41 0.1MF C46 0.1MF R49 33 C47 0.1MF + C45 22MF / 16V U6C 40106 56 U6E 40106 1110 U6F 40106 1312 U6D 40106 98 C58 0.1MF C60 0.1MF R52 33 + C59 22MF / 16V R50 33 C52 0.1MF + C53 22MF / 16V D9 1N4007 U7UA7915 2 1 3 IN GND OUT D11 1N4007 C54 0.1MF D10 1N4007 + C50 47MF / 35V + C56 47MF / 35V + C51 47MF / 35V D12 1N4007 + C63 220MF / 35V C62 0.1MF + C61 47MF / 35V + C57 47MF / 35V C55 10nF R48 33 C65 0.1MF C43 0.1MF U6B 40106 34 U47815 1 2 3 Vi GND Vo + C42 22MF / 16V R51 10K C44 0.1MF Q1 TIP41C U6A 40106 12 14 7 L6 4.7mH C39 0.1MF Q2 BD244C + C34 470MF / 35V + C36 470MF / 35V L7 CHOKE U57805 1 2 3 Vi GND Vo C49 0.1MF C38 0.1MF +C48 1000MF / 16V TERM20 Rext1B TERM19 Rext 1A VC GND -15V +15V VA +5V VD VB +24V CMRR LIMITER STEREO 75μS 50μS DFM MONO MODULATION Mod. AUDIO 1A 1.0 Audio Input Interface C 11Thursday, December 18, 2003 Title SizeDocument NumberRev Date:Sheet of NEXUS BROADNEXUS BROADCASTCAST VC VD VA VB +15V +15V-15V +5V VA VC VB VD -15V +15V -15V + C19 100MF / 25V R27 560K + C25 2.2MF / 50V D6 3V3 C21 0.1MF J7 DJ3 + - U2A LM358 3 2 1 R29 100K 1% R43 10K R35 10K R34 4K7 + C31 100MF / 25V + C29 100MF / 25V R46 4K7 R3 27K R42 4K7 R47 10K R36 560 + - U3A OP275G 3 2 1 8 4 R23 100K 1% R22 220K 1% C33 47pF R5 12K R10 1K R21 33 + C22 22MF / 16V R24 1K R18 1K R39 10K R6 27K C28 4.7nF J8 DJ3 C30 6.8nF R16 1K C13 60pF + C17 1000MF / 16V R19 20K D4 BAT43 R12 600 R14 1K8 FILT1 FILTER 19KHz 123456 78 D3 BAT43 R41 3K9 R7 5K R33 10K R40 3K9 + - U3B OP275G 5 6 7 R37 10K C32 47pF R44 2K2 R4 47K R32 560K R13 200 R45 10K + - U1B OP275 5 6 7 8 4 + - U1A OP275 3 2 1 R17 12K R8 27K C14 18pF R38 10K C16 470pF R20 12K R25 4K7 R11 12K R26 10K + C23 470MF / 35V C18 470pF C20 470pF D8 1N4148 D7 1N4148 R31 NC + C24 470MF / 35V R15 10K R28 100K + C26 22MF / 16V + - U2B LM358 5 6 7 8 4 C27 NC R9 47K C15 10pF R30 33 D5 1N4148 BF OUT VC VB GND VA VD +5V GND BF OUT VU METER MONO + GND MONO MONO - SCA 1 GND SCA 1 SCA 2 SCA 3 MPX GND SCA 2 GND SCA 3 GND MPX +15V -15V Mod. PLL1501 1.0 PLL A3 11Thursday, December 18, 2003 Title SizeDocument NumberRev Date:Sheetof NEXUS BROADCASTNEXUS BROADCAST R93 220 C81 1nF R88 100 + C88 2.2MF / 50V D13 LED R92 0 R104 NC R96 47 + C85 47MF / 16V Q6 BC327 1 2 3 R90 18 + C86 470MF / 35V R89 10K + C89 NC C80 0.1MF C83 0.1MF R100 1K + C93 22MF / 16V C94 1nF + - U11A LM358 3 2 1 R94 3K9 R97 100 +C84 470MF / 35V R81 10K C92 1nF R99 47K + C87 22MF / 16V R86 0 +C77 22MF / 16V + C91 47MF / 16V U10 MB1501 1 2 3 4 5 6 7 89 10 11 12 13 14 15 16 OSCin OSCout Vp Vcc Do GND LD FinClock Data LE FC Fr Fp ØP ØR C79 0.1MF R98 47K R84 330 + - U11B LM358 5 6 7 8 4 R123 47 C119 1nF Q5 BC327 1 2 3 L15 CHOKE L14 0 C121 NCC120 NC D15 3V3 R82 0 R95 47K R80 0 R83 3K9 R85 4K7 R91 0 TCXO1 12.800MHz 1 78 14 N.C GNDOUT Vcc +C78 22MF / 16V C82 NC R101 47K R103 100K R102 560 D14 5V1 R87 220 + C95 2.2MF / 50V + C90 22MF / 16V R105 220K +15V GND OUT VCO +5V LE GND DATA DATA CLOCK GND RF IN LED LOCK RF IN PLL LOCK C3 ÷ C5 47MF 16V VCO0999A 1.0 Voltage Control Oscillator 900 MHz A3 17Thursday, December 18, 2003 Title SizeDocument NumberRev Date:Sheet of NEXUS BROADCASTNEXUS BROADCAST + C127 C125 0.1MF L16 Microstrip Ind. Q9 BC817-16L 3 1 2 + C128 R130 22 R136 100 R126 8K2 R127 22K + C129 C138 1nF R128 100 C126 0.1MF + C134 47MF 16V R134 330 C132 0.1MF + C130 10MF 16V R129 680…

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CH3 CH2CH1CH0GND VCC RX (RS23 2) TX (RS232) Mod. MICRO00A 1.0 CONTROL BOARD B 11Tuesday, December 16, 2003 Title SizeDocument NumberRev Date:Sheetof NEXUS BROADCASTNEXUS BROADCAST D0D1D2D3D4D5D6D7D7D6D5D4D3D2D1D0 D0 D1 D2 D4 D6 D7 EN RW RS D[0:7] D3 D5 SCLK SDTA PLL_CLK PLL_DTA SETTING SETUP LAMP TXD RXD SCLK ADC_EN EN RW RS LAMP SETUP RXD TXD SELECT SETTING PLL_EN ADC_EN RF_ONOFF PLL_LOCK PLL_LOCK RF_ONOFF PLL_EN PLL_CLKPLL_DTA SDTA SELECT +5V +5V +5V +5V +5V +5V +5V J3 CON16 123456789 10111213141516 LCD1DISPLAY V20350 12345678910111213141516 GNDVCCV0RSRWENDB0DB1DB2DB3DB4DB5DB6DB7LED -LED + U1ADC08234 3 4 5 6 1 9 8 7 11 2 12 13 10 14 CH0 CH1 CH2 CH3 Vref OUT Vref IN AGND DGND SARS CS CLK DI DO VCC U3MAX232 1 2 3 4 56 7 8 16 15 14 1312 11 10 9 C1+ V+ C1- C2+ C2-V- T2 OUT R2 IN VCC GND T1 OUT R1 INR1 OUT T1 IN T2 IN R2 OUT U2AT89S8252 2 3 4 5 6 7 8 9 10 11 13 14 15 16 17 18 19 20 21 24 25 26 27 28 29 30 31 32 33 36 37 38 39 40 41 42 43 35 22 231 12 34 44 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 RST RxD TxD INT0 INT1 T0 T1 WR RT XTAL2 XTAL1 P2.0 P2.1 P2.2 P2.3 P2.4 P2.5 P2.6 P2.7 PSEN ALE P0.7 P0.6 P0.5 P0.4 P0.3 P0.2 P0.1 P0.0 EA GND CA B D VCC Y1 11.0592 MHz C2 33pF C R1 10K 1 23456789 C6 33pF R10 10K R8 10K R7 10K C4 0.1MF C3 0.1MF + C1 10MF 25V U5MAX812L 12 43 GNDRST VCCMR + C13 1MF 16V C10 0.1MF + C8 100MF 6V J1 DJ2 J2 DJ3 R2 10K Q1 BC557 2 13 R11 1K2 R310K R410K R510K R610K C7 0.1MF R9 10K + C12 1MF 16V + C9 1MF 16V + C14 1MF 16V + C11 1MF 16V C R12 6K8 1 2345678

Mod. 2PULS1 1.0 Push Switchers A 11Friday, January 24, 2003 Title SizeDocument NumberRev Date:Sheet of NEXUS BNEXUS BROADCASTROADCAST SW1 SELECT SW2 SETTING J1 DJ3 1 2 3

Mod. FM900-10-C 1.0 RF AMPLIFIER 900MHz 10W A 11Thursday, December 18, 2003 Title SizeDocument NumberRev Date:Sheet of NEXUS BROADCASTNEXUS BROADCAST RF AMPLIFIER RF INPUTRF OUTPUT RF ENABLE +15V GND FILTER & RF METER RF INPUTRF OUTPUT REFLECTED METER FORWARD METER C3 0.1MF C4 0.1MF C1 0.1MF C2 0.1MF TERM1 FWD METER TERM2 RFL METER J2 BNC 1 2 J1 RF INP…

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