1. Manuals
  2. Brands
  3. Kenwood Manuals
  4. Repeater
  5. NEXEDGE NXR-800
  6. Service manual

Kenwood NXR-800 Service Manual

Uhf digital base-repeater
Hide thumbs Also See for NXR-800:
Table of Contents

Advertisement

Quick Links

Download this manual See also: Service Manual, Service Manual Supplement
UHF DIGITAL BASE-REPEATER
NXR-800
SERVICE MANUAL
SUPPLEMENT III
This NXR-800 (K4) service manual contains a number of sections which differ from
the service manual (B51-8795-00 and B51-8827-00) for NXR-800 (K and K, K2).
For items other than those in this NXR-800 (K4) service manual, please refer to the
service manual (B51-8795-00 and B51-8827-00) for NXR-800 (K and K, K2).
Badge
Main panel
(B43-1188-04)
(A62-1142-02)
Lead wire with
connector (BNC-RX)
(E37-1303-05)
TEST/SPKR
RX
Lead wire with
connector (ACC15)
(E37-1313-05)
GENERAL .....................................................2
SYSTEM SET-UP .........................................3
CIRCUIT DESCRIPTION ..............................4
PARTS LIST .................................................6
EXPLODED VIEW ......................................26
PACKING ....................................................28
ADJUSTMENT ..........................................29
RoHS
This product complies with the
K4 version
Modular jack
(E58-0533-05)x2
SYNC
LAN
CONTROL I/O
1
2
Lead wire with
Modular jack
connector (DSUB-25P)
(E58-0516-05)
(E37-1310-05)
CONTENTS
directive for the European market.
Lead wire with
connector (DSUB-9P)
(E37-1311-05)
STATUS
1 2
3 4 5 6 7 8
MON TAKE
RPT
OVER
DISABLE
CTRL
OCXO BUSY
TX
POWER
A
B
C
Lead wire with
connector (BNC-REF.)
Cover (Fan)
(E37-1304-05)x2
(F07-1930-05)
FUSE
REF OUT
REF IN
Blade fuse
(F05-7521-05)
PC BOARD
FINAL UNIT (X45-3820-13) ...................44
RF UNIT (X55-3100-13) .........................52
TX UNIT (X56-3120-13) .........................56
SCHEMATIC DIAGRAM ............................60
SPECIFICATIONS ...................BACK COVER
© 2009-12 PRINTED IN JAPAN
B51-8898-00 ( N ) 156
Modular jack
(E58-0526-05)
VOLUME
MICROPHONE
COM
OFF/
Knob (VOL)
(K29-4539-04)
RF coaxial
receptacle (BNC)
(E04-0463-05)
DC 13.8V
TX
DC cord
Fanmotor
(E30-7581-05)
(F09-0488-15)
This product uses Lead Free solder.

Advertisement

Table of Contents
loading

Related Manuals for Kenwood NXR-800

Summary of Contents for Kenwood NXR-800

  • Page 1: Table Of Contents

    This NXR-800 (K4) service manual contains a number of sections which differ from the service manual (B51-8795-00 and B51-8827-00) for NXR-800 (K and K, K2). For items other than those in this NXR-800 (K4) service manual, please refer to the service manual (B51-8795-00 and B51-8827-00) for NXR-800 (K and K, K2).

  • Page 2: General

    Neither is any liability assumed for dam- the fi rmware under the license of Digital Voice Systems, Inc. ages resulting from the use of the information contained herein. Kenwood reserves the right to make changes to any products herein at any time for improvement purposes. GENERAL...

  • Page 3: System Set-Up

    The RX RF BPF (L132~L135 on RX unit) must be aligned to obtain the maximum sensitivity at a programmed frequency. When using the Very Narrow Mode of the OCXO? KXK-3 installation NXR-800 repeater, install the KXK-3 (OCXO). (Option) External speaker? KES-5 installation (Option) Delivery ■...

  • Page 4: Circuit Description

    NXR-800 CIRCUIT DESCRIPTION 1. Transmitter main PLL circuit The transmitter main PLL circuit consists of the VCO The phase difference signal produced by the comparing (Q102 and Q103), PLL IC (IC101), IC102, Q104 and Q106 phase is converted to a DC voltage by a lag-lead type loop and produces the transmitter frequency signal.
  • Page 5 NXR-800 CIRCUIT DESCRIPTION 2. Receiver PLL circuits The receiver unit (X55-310) has the 1st-PLL circuit for Meanwhile, the 2nd-PLL circuit consists of the VCO (Q24), controlling the VCO that generates the hetero signal to the the Buffer amplifi er (Q33), the RF amplifi er (Q38, Q22), and fi...

  • Page 6: Parts List

    NXR-800 PARTS LIST CAPACITORS 2 2 0 • Capacitor value CC45 Color* 010 = 1pF 0 = 22pF 1 = Type ... ceramic, electrolytic, etc. 4 = Voltage rating 100 = 10pF 2 = Shape ... round, square, etc. 5 = Value...
  • Page 7 NXR-800 PARTS LIST ✽ New Parts. indicates safety critical components. L : Scandinavia K : USA P : Canada Parts without Parts No. are not supplied. Y : PX (Far East, Hawaii) T : England E : Eu rope Les articles non mentionnes dans le Parts No. ne sont pas fournis.
  • Page 8 NXR-800 PARTS LIST FINAL UNIT (X45-3820-13) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation CK73GB1H103K CHIP C 0.010UF C915 CC73GCH1H101J CHIP C 100PF CC73GCH1H180J CHIP C 18PF C916...
  • Page 9 NXR-800 PARTS LIST FINAL UNIT (X45-3820-13) CONTROL UNIT (X53-4130-10) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R53,54 RK73GB2A184J CHIP R 180K 1/10W S24CS02AFJTBG ROM IC R55-58 RK73GB2A104J...
  • Page 10 NXR-800 PARTS LIST CONTROL UNIT (X53-4130-10) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation CK73GB1H103K CHIP C 0.010UF C203 CC73GCH1H101J CHIP C 100PF C89,90 CC73GCH1H221J CHIP C 220PF...
  • Page 11 NXR-800 PARTS LIST CONTROL UNIT (X53-4130-10) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C313 CC73GCH1H101J CHIP C 100PF C407 CK73GB1H102K CHIP C 1000PF C314 CK73GB1H102K CHIP C...
  • Page 12 NXR-800 PARTS LIST CONTROL UNIT (X53-4130-10) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R1,2 RK73GB2A000J CHIP R 1/10W R153 RK73GB2A000J CHIP R 1/10W RK73GB2A101J CHIP R 1/10W...
  • Page 13 NXR-800 PARTS LIST CONTROL UNIT (X53-4130-10) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R279 RK73GB2A103J CHIP R 1/10W R522,523 RK73GB2A000J CHIP R 1/10W R281 RK73GB2A103J CHIP R...
  • Page 14 NXR-800 PARTS LIST CONTROL UNIT (X53-4130-10) RX UNIT (X55-3100-13) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation IC37 320VC5402PGE MICRO CONTROL UNIT CK73GB1H103K CHIP C 0.010UF IC38 TC7SET08FU-F...
  • Page 15 NXR-800 PARTS LIST RX UNIT (X55-3100-13) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C137 CC73GCH1H060D CHIP C 6.0PF C236 CK73GB1H104K CHIP C 0.10UF C138 CC73GCH1H220J CHIP C...
  • Page 16 NXR-800 PARTS LIST RX UNIT (X55-3100-13) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C318,319 CK73GB1H103K CHIP C 0.010UF C410 CK73GB1H104K CHIP C 0.10UF C320 CE32BM1E470M CHIP EL...
  • Page 17 NXR-800 PARTS LIST RX UNIT (X55-3100-13) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C506 CK73GB1H102K CHIP C 1000PF C628 CK73GB1H104K CHIP C 0.10UF C507 CK73GB1H104K CHIP C 0.10UF...
  • Page 18 NXR-800 PARTS LIST RX UNIT (X55-3100-13) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation L41-1095-33 SMALL FIXED INDUCTOR (1.0UH) L119 L41-2285-33 SMALL FIXED INDUCTOR (0.22UH) L41-2275-33 SMALL FIXED INDUCTOR (0.022UH)
  • Page 19 NXR-800 PARTS LIST RX UNIT (X55-3100-13) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation RK73GB2A100J CHIP R 1/10W R145 RK73GB2A100J CHIP R 1/10W RK73GB2A470J CHIP R 1/10W R146...
  • Page 20 NXR-800 PARTS LIST RX UNIT (X55-3100-13) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R223 RK73GB2A180J CHIP R 1/10W R317-319 RK73GB2A100J CHIP R 1/10W R224 RK73GB2A100J CHIP R...
  • Page 21 NXR-800 PARTS LIST RX UNIT (X55-3100-13) TX UNIT (X56-3120-13) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R437 RK73GB2A000J CHIP R 1/10W 2SC4617(R) TRANSISTOR R455 RK73GB2A104J CHIP R...
  • Page 22 NXR-800 PARTS LIST TX UNIT (X56-3120-13) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C154 CS77CC1C330M CHIP TNTL 33UF 16WV C243,244 CC73GCH1H471J CHIP C 470PF C156,157 CC73GCH1H471J CHIP C...
  • Page 23 NXR-800 PARTS LIST TX UNIT (X56-3120-13) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C342 CS77CB21A470M CHIP TNTL 47UF 10WV C445 CS77CA1V0R1M CHIP TNTL 0.1UF 35WV C343,344 CK73GB1H103K CHIP C 0.010UF...
  • Page 24 NXR-800 PARTS LIST TX UNIT (X56-3120-13) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C558,559 CK73GB1H104K CHIP C 0.10UF C811 CK73GB1H104K CHIP C 0.10UF C562 CK73GB1H104K CHIP C 0.10UF...
  • Page 25 NXR-800 PARTS LIST TX UNIT (X56-3120-13) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation CF601 L72-1019-05 CERAMIC FILTER L601,602 L41-3305-33 SMALL FIXED INDUCTOR (33UH) L105,106 L41-1095-33 SMALL FIXED INDUCTOR (1.0UH)
  • Page 26 NXR-800 PARTS LIST TX UNIT (X56-3120-13) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R170 RK73GB2A000J CHIP R 1/10W R264 RK73GB2A100J CHIP R 1/10W R171,172 RK73GB2A470J CHIP R...
  • Page 27 NXR-800 PARTS LIST TX UNIT (X56-3120-13) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R377,378 RK73GB2A104J CHIP R 100K 1/10W R493 RK73GB2A104J CHIP R 100K 1/10W R379 RK73GB2A000J...
  • Page 28 NXR-800 PARTS LIST TX UNIT (X56-3120-13) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R563 RK73GB2A473J CHIP R 1/10W R715 RK73GB2A474J CHIP R 470K 1/10W R564 RK73GB2A223J CHIP R...
  • Page 29 NXR-800 PARTS LIST TX UNIT (X56-3120-13) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation IC101 LMX2352TMX/NP ANALOGUE IC Q410 2SA1832F TRANSISTOR IC102 LMC7101BIM5 MOS-IC Q412 2SC4617(R) TRANSISTOR IC104...

  • Page 30: Exploded View

    NXR-800 EXPLODED VIEW IC11 IC12 : N09-2292-05 M2 x 8 : N30-2008-43 X45-382 D M2.6 x 6 : N30-2606-48 M3 x 35 : N30-3016-43 M3 x 6 (F) : N32-3006-43 IC10 G M4 x 8 (F) : N32-4008-43 703x3 : N67-3008-48...
  • Page 31 NXR-800 EXPLODED VIEW 17x3 45-382 X53-414 IC329 X53-414 IC808 X53-413 IC29 IC24 IC25 X53-413 703x4 X45-382 X55-310 EXCITER FINAL CONTROL Parts with the exploded numbers larger than 700 are not supplied. If a part reference number is listed in a box on the exploded view of the PCB, that part does not come with the PCB.

  • Page 32: Packing

    NXR-800 PACKING 10 Instruction manual (B62-1994-10) 36 Blade fuse (7.5A/32V) Protection bagx2 (F05-7521-05) 54 Bracket (Side) 34 15P plug (J29-0725-04)x2 (E37-1381-05) Pamphlet Protection bagx4 Protection bag 3 Front glass (B10-2781-04) 58 Handle (K01-0421-05) Protection bag Protection sheet A Dressed screw...

  • Page 33: Adjustment

    NXR-800 ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Specifi cations Frequency Range 300 to 512MHz 1. Standard Signal Generator Modulation Frequency modulation and external modulation (SSG) Output 0.1µV to greater than 1mV Input Impedance 50Ω 2. RF Power Meter...
  • Page 34 NXR-800 ADJUSTMENT Flat cable (36-pin) about 256mm (E37-0979-05) 2.5MHz 2.5MHz 3dB max. ANT Jig for BPF adjustment (E30-3418-08) BPF center frequency (Production default): 390MHz Pass bandwidth: ±2.5MHz at 3dB Fig. 1 MCF (Wide) 7.5kHz 7.5kHz Test Signaling max. ■ Analog...
  • Page 35 NXR-800 ADJUSTMENT Adjustment Points TX IN PWR CONT PA CURR PWR PRT ANT SW CN19 FINAL UNIT (X45-3820-13) RX ANT Component side VR1: Coupler ADJ VR2: High Transmit Power (Pre ADJ) CN46 CN40 L132 L133 L134 L135 CN41 CN36 RX UNIT (X55-3100-13)
  • Page 36 NXR-800 ADJUSTMENT Alignment Measurement Adjustment Item Condition Specifi cations / Remarks Test- Unit Terminal Unit Parts Method equipment 1. Setting 1) Connect the DC power output to the rear panel DC terminal (13.8V). 2) Connect the front panel COM port (D-sub 9 connector) to the PC serial port with a cross-wired cable.
  • Page 37 NXR-800 ADJUSTMENT Measurement Adjustment Item Condition Specifi cations / Remarks Test- Unit Terminal Unit Parts Method equipment 8. Fixation of 1) Apply the high-frequency varnish to the adjusted Transmit VCO coil (L128, L108) and cover it with a shield cover.
  • Page 38 NXR-800 ADJUSTMENT Measurement Adjustment Item Condition Specifi cations / Remarks Test- Unit Terminal Unit Parts Method equipment 15. High 1) Low Power meter Rear TX ANT Value: 1024 Fixed value writing Transmit Power (Pre ADJ) Final 5.0W ±0.1W 16. Coupler...
  • Page 39 NXR-800 ADJUSTMENT Measurement Adjustment Item Condition Specifi cations / Remarks Test- Unit Terminal Unit Parts Method equipment 21. Maximum 1) Channel: 3 (Center) Deviation Rear TX ANT ±4.1kHz ±0.2kHz Deviation Wide/Narrow: Analog Wide meter Front (Analog) Connect the deviation meter...
  • Page 40 NXR-800 ADJUSTMENT Measurement Adjustment Item Condition Specifi cations / Remarks Test- Unit Terminal Unit Parts Method equipment 24. DQT 1) Channel: 3 (Center) Deviation Rear TX ANT ±0.75kHz ±0.05kHz Deviation Wide/Narrow: Analog Wide meter Connect the deviation meter Connect the deviation meter...
  • Page 41 NXR-800 ADJUSTMENT Measurement Adjustment Item Condition Specifi cations / Remarks Test- Unit Terminal Unit Parts Method equipment 28. Courtesy 1) Channel: 3 (Center) Deviation Rear TX ANT ±1.00kHz ±0.05kHz Tone Wide/Narrow: Analog Wide meter Deviation Connect the deviation meter Connect the deviation meter...
  • Page 42 NXR-800 ADJUSTMENT Measurement Adjustment Item Condition Specifi cations / Remarks Test- Unit Terminal Unit Parts Method equipment 33. Discriminator 1) Narrow Rear RX ANT L128 Adjust AF output Frequency: Desired frequency AF V.M TEST/ max. SSG output: –53dBm (501µV) SPKR...
  • Page 43 NXR-800 ADJUSTMENT Measurement Adjustment Item Condition Specifi cations / Remarks Test- Unit Terminal Unit Parts Method equipment 38. Open 1) Wide/Narrow: Analog Wide Rear RX ANT Adjust it to the level Squelch Connect the SSG to the RX Oscilloscope TEST/ to open the squelch.

  • Page 44: Final Unit (X45-3820-13)

    NXR-800 PC BOARD FINAL UNIT (X45-3820-13) Component side view (J79-0149-09) L702 C709 IC701 IC12 C702 C706 C701 C705 C704 L704 C717 IC11 C190 ANT SW C189 J79-0149-09 REFLECT CN19 C102 MONITOR C104 C124 C149 C105 C123 C900 J901 – C916...
  • Page 45 NXR-800 PC BOARD FINAL UNIT (X45-3820-13) Component side view (J79-0149-09) CN20 SIGNAL R147 PWR CONT R142 PA CURR PWR PRT C128 R104 C115 C127 FORWARD C141 J79-0149-09 A/5 CN28 CN30 – – – 3 SB CN27 CN29 C188 – J79-0149-09...
  • Page 46 NXR-800 PC BOARD FINAL UNIT (X45-3820-13) Foil side view (J79-0149-09) J79-0149-09 A/5 – – CN24 CN23 – CN26 CN25 – J79-0149-09 J79-0149-09 B/5 Ref. No. Address Ref. No. Address Ref. No. Address IC15 D902 IC702 IC703...
  • Page 47 NXR-800 PC BOARD FINAL UNIT (X45-3820-13) Foil side view (J79-0149-09) C170 R106 R138 R137 R110 R136 C167 C150 IC15 R139 R107 L703 C713 C716 C108 J79-0149-09 CN23 C908 L900 C902 CN25 C914 J79-0149-09 E/5 9 B/5 Component side Layer 1...

  • Page 48: Control Unit (X53-4130-10)

    NXR-800 PC BOARD CONTROL UNIT (X53-4130-10) Component side view (J79-0011-19) C372 R550 R389 R551 CN56 SPG 2 R390 C166 + C170 C144 C141 R204 50MPU 50MPU R201 R202 R198 C405 R211 STB1 R208 C226 R218 SR_DATA R210 SR_CLK R219 C227...
  • Page 49 NXR-800 PC BOARD CONTROL UNIT (X53-4130-10) Component side view (J79-0011-19) R535 C104 R534 4 SB C109 IC11 R108 CLEAR/ C106 CODE RXEO SCR_PTT RXEI SCRAMBLE C107 C108 R188 C130 IC10 R107 C105 AOUTL MMUTE C133 TXANTS_O PTOA SIDETONE C131 TCTL...
  • Page 50 NXR-800 PC BOARD CONTROL UNIT (X53-4130-10) Foil side view (J79-0011-19) R434 C500 C415 C403 C169 R171 R149 C189 R150 C446 C188 R457 R478 R415 C424 R441 C423 R154 C425 C426 R173 R459 R444 C427 C477 R165 R445 C428 R482 C193...
  • Page 51 NXR-800 PC BOARD CONTROL UNIT (X53-4130-10) Foil side view (J79-0011-19) CN69 R475 R149 C204 C446 C188 R160 R161 R168 C477 R428 R429 C418 R430 C437 C419 R406 C396 R283 C212 C216 R195 C213 R182 C510 C110 R181 R196 R540 C219...
  • Page 52 NXR-800 PC BOARD RX UNIT (X55-3100-13) Component side view (J79-0292-09) L132 L133 L134 L135 C147 C131 C100 C109 CN15 CN23 CN27 R423 C113 R422 R364 C164 C179 C206 C154 C168 C158 C214 R116 C220 R103 C151 R106 C175 C195 C132...
  • Page 53 NXR-800 PC BOARD RX UNIT (X55-3100-13) Component side view (J79-0292-09) CN46 L135 NARROW CN41 WIDE R175 R179 R166 C500 C335 R171 IC15 CN16 CN62 C357 C484 R174 R197 R192 C432 R178 R165 C334 R169 R367 R366 R257 R254 R163 C268...
  • Page 54 NXR-800 PC BOARD RX UNIT (X55-3100-13) Foil side view (J79-0292-09) C242 C235 C153 L139 C141 C174 R462 C289 L141 C197 C254 C110 C117 R108 C212 C358 C218 R118 C224 C229 L138 C140 R459 C173 L140 C356 C196 C288 R107 C211...
  • Page 55 NXR-800 PC BOARD RX UNIT (X55-3100-13) Foil side view (J79-0292-09) R410 R407 C624 C659 R295 C192 C176 R101 R115 C198 IC27 IC26 C227 R119 C548 C547 R133 C553 C552 R436 R142 C487 C671 R435 C302 IC18 R417 C503 R308 R307...

  • Page 56: Tx Unit (X56-3120-13)

    NXR-800 PC BOARD TX UNIT (X56-3120-13) Component side view (J79-0153-09) C151 C811 C805 R801 C801 C812 L801 C803 CN806 C161 IC802 C809 IC803 C806 R803 C802 CN303 C808 R802 MB_CV1 IC801 CN115 CN116 CN109 CN119 CN107 CN105 D107 D108 R341...
  • Page 57 NXR-800 PC BOARD TX UNIT (X56-3120-13) Component side view (J79-0153-09) X401 IC809 8OCXO R418 C415 R415 R416 R414 C410 R412 R411 R404 Q401 IC808 L401 L402 C408 R409 R403 C403 C406 C573 C578 C423 CN406 CN405 REF1 REF2 C546 C720...
  • Page 58 NXR-800 PC BOARD TX UNIT (X56-3120-13) Foil side view (J79-0153-09) C481 R503 R511 C480 C435 L414 C439 IC405 C466 C472 R500 R484 C468 R488 C442 C451 R480 L604 C463 Q416 C465 C620 C447 C455 L410 C613 L412 C461 C458 L602...
  • Page 59 NXR-800 PC BOARD TX UNIT (X56-3120-13) Foil side view (J79-0153-09) C154 R134 IC104 R137 R891 C158 C435 C427 R888 C439 C160 C466 L408 L405 R889 Q412 C442 C455 R475 L410 C458 C309 IC302 C305 R369 IC306 C312 L301 R324 R314...

  • Page 60: Schematic Diagram

    NXR-800 SCHEMATIC DIAGRAM POWER MODULE IC10 RA13H3340M131 FINAL UNIT(PA SECTION) (X45-3820-13)(A/5) TX H:3.8V TX H:13.7V L:3.3V L:13.8V TX:100mW :13.8V RX:0W 3DB ATT TX UNIT C141 X56-312 (A/3)-CN802 RF IN 470p 470p 470p OVERVOLTAGE PROTECTION 02CZ5.6(Y)F L92-0179-05 0.01u CURRENT SENSE DETECTOR...
  • Page 61 NXR-800 SCHEMATIC DIAGRAM FINAL UNIT (PA SECTION) (X45-3820-13) (A/5) TX H:5W ANT SW L:0.5W RF SW RF SW DIRECTIONAL COUPLER C105 CN22 C122 C123 R125 TX ANT L7091CER L7091CER 470p FORWARD REFLECT CN19 C124 D14,15 RF SW TX:8V RX:0V TX H:3.3V C108 L:1.0V...
  • Page 62 NXR-800 SCHEMATIC DIAGRAM RX UNIT(X55-3100-13) W:-93.2dBm N:-92.3dBm CN41 MONITOR_PORT W:-117.8dBm N:-116.6dBm 8.5V F10-2379-04 F10-2409-04 L132 L133 L134 L135 1.0V L79-1941-05 L79-1941-05 L79-1941-05 L79-1941-05 2SC5337 C659 C624 C117 R410 R407 470p 100p 100p 8p(B) 120p 0.2V W02-1940-05 470p 470p 470p 470p...
  • Page 63 NXR-800 SCHEMATIC DIAGRAM RX UNIT (X55-3100-13) W:7.8V RF SW N:0.5mV W:7.4V W:3.2V L112 N:0.5mV RF AMP JDP4P02U L39-1476-05 N:0.6mV W:3.7V N:5.2mV W:2.2V RF AMP RD01MUS1-T113 L71-0646-15 N:0.8mV 3.3u L138 L140 L71-0648-05 C140 C173 C234 C241 C288 C307 R459 3SK317-E 560n...
  • Page 64 NXR-800 SCHEMATIC DIAGRAM RX UNIT (X55-3100-13) L128 DC SW L34-4725-05 L123 CN47 W:-75.7dBm N:-75.5dBm SSM3K15TE(F) 3.3u R270 C470 JDP4P02U 470p RF SW C459 DTA144EE C573 R351 DC SW 220p 0.01u DETECTOR MA3J742 C461 C477 R285 C510 C577 220p 0.1u 330k 0.1u...
  • Page 65 NXR-800 SCHEMATIC DIAGRAM RX UNIT (X55-3100-13) RIPPLE FILTER AMP 2SC4116(BL)F OP-AMP R120 R128 LMC7101BIM5 VCO_A:457.5MHz 1.18V VCO_B:472.5MHz 2.22V CN63 OUTPUT 3 INPUT+ 8.1V INPUT- R430 C113 R422 C175 6p(B) 100p OSCILLATOR FREQUENCY CONTROL 2SK2539-7 C142 5p(B) 0.5p 1SV283F FREQUENCY CONTROL A_ON:2.6V...
  • Page 66 NXR-800 SCHEMATIC DIAGRAM RX UNIT (X55-3100-13) R377 R379 W:2.65V OP-AMP N:2.65V IC33 CN64 LMC7101BIM5 OUTPUT INPUT+ INPUT- C618 100p RIPPLE FILTER AMP 8.1V R405 2SC4116(BL)F R201 R167 R210 R183 R193 R236 C408 R223 C315 R237 FREQUENCY 8.9V CONTROL OSCILLATOR 1.6V...
  • Page 67 NXR-800 SCHEMATIC DIAGRAM RX UNIT (X55-3100-13) CONTROL UNIT CN43 RX_IF_VN X53-414 -CN300 CN42 CN60 RX_PoWER_SAVE CN48 DDS_EN VCO_BAND_SW CN49 PLL1_EN DA_EN CN50 SIF_CLK CN51 SIF_DAT AT RX ANT -47dBm INPUT RX_AUDIO STD Devi N:100mVrms CN52 PLL_PWR_SAVE W:109mVrms CN66 CN57 FM_RSSI...
  • Page 68 NXR-800 SCHEMATIC DIAGRAM TX UNIT(X56-3120-13)(A/3) C189 C193 C194 E100 F10-3081-04 Q102 L125 D108 C182 C195 R176 L128 2SK2539-7 R184 400-415MHz 1SV283F 0.5p(B) CN104 CN108 CN112 CN116 CN120 CN102 CN106 CN110 CN114 CN118 DC SW RF VCO VCO_A:1.1V Q702 VCO_B:1.6V SSM3K15TE(F)
  • Page 69 NXR-800 SCHEMATIC DIAGRAM TX UNIT (X56-3120-13) (A/3) VOLTAGE REGULATOR 13.8V 13.8V IC104 NJM2386ADL3-09 RIPPLE FILTER AMP 7.9V Q105 2SC4116(BL)F R134 9Vʼ 8V #1ʼ C163 470p R139 T:7.8V R:0V T:7.2V C156 C162 R:0V 9Vʼ 470p 470p T:1.5V T:1.4V RF AMP R:0V...
  • Page 70 NXR-800 SCHEMATIC DIAGRAM TX UNIT (X56-3120-13) (A/3) 400-430MHz 400-430MHz 13.8V 13.8V 8V #1ʼ GND SPRING CN130 SCLK0 SDo0 T:7.8V 8V #1 8V #1 R:0V 5V #2 <--19.2MHz 5V #1 VOLTAGE REGULATOR 8V #2 C221 R224 R226 IC808 3-STATE BUFFER NJM7808FA-ZB...
  • Page 71 NXR-800 SCHEMATIC DIAGRAM TX UNIT (X56-3120-13) (A/3) 400-430MHz 400-430MHz 13.8V 13.8V SCLK0 SCLK0 SDo0 SDo0 8V #1 8V #1 5V #2 5V #2 <--19.2MHz <--19.2MHz 5V #1 5V #1 8V #2 8V #2 When kxk-3 or extenal reference signal is used.
  • Page 72 NXR-800 SCHEMATIC DIAGRAM TX UNIT (X56-3120-13) (A/3) 400-430MHz 400-430MHz 13.8V 13.8V SCLK0 SCLK0 SDo0 SDo0 8V #1 8V #1 5V #2 5V #2 <--19.2MHz <--19.2MHz 5V #1 5V #1 8V #2 8V #2 VOLTAGE REGULATOR IC704 NJM78M08DL1AZB 13.8V VOLTAGE REGULATOR...
  • Page 73 NXR-800 SCHEMATIC DIAGRAM TX UNIT (X56-3120-13) (A/3) +20dBm CN802 FINAL UNIT TX oUT 400-430MHz +20dBm 400-430MHz X45-382 (C/5) 13.8V -CN1 CN801 T:13.6V SCLK0 SCLK0 R:13.7V SDo0 SDo0 FINAL UNIT 13.8V X45-382 (C/5) -CN12 CN804 SDo1 CN805 SDo1 SCLK0 SCLK1 SCLK1...
  • Page 74 NXR-800 SCHEMATIC DIAGRAM TX UNIT(17SEG) TX UNIT(LED) (X56-3120-13)(C/3) (X56-3120-13)(B/3) Q975 UMG1N DC SW Q976 UMG1N DC SW IC963 SHIFT-REGISTER Q974 UMG1N DC SW Q973 UMG1N DC SW Q972 UMG1N IC962 SHIFT-REGISTER DC SW Q971 UMG1N CN960 CN920 LED 10 DC SW...
  • Page 75 NXR-800 SCHEMATIC DIAGRAM TX UNIT (LED) (X56-3120-13) (B/3) SHIFT-REGISTER IC923 BU4094BCFV STRB DATA SHIFT-REGISTER SHIFT-REGISTER IC924 IC925 BU4094BCFV BU4094BCFV STRB STRB DATA DATA QʼS QʼS QʼS 3-STATE BUFFER IC922 TC7SET126FU-F R922 oUTY C920 0.1u 3-STATE BUFFER 3-STATE BUFFER IC920 IC921...

  • Page 76: Specifications

    Weight ..............11 lbs (5kg) *1: Analog measurements made per TIA/EIA 603. Without *1: Analog measurements made per TIA/EIA 603A. Transmitter KENWOOD reserves the right to change specifi cations with- out prior notice or obligation. RF Power Output ............5~0.5W Spurious & Harmonics ........... 73dB FM Hum &...
  • Page 77 NXR-800 NXR-800 PC BOARD PC BOARD FINAL UNIT (X45-3820-13) FINAL UNIT (X45-3820-13) Component side view (J79-0149-09) Component side view (J79-0149-09) CN20 L702 C709 IC701 SIGNAL IC12 R147 PWR CONT C702 C706 C701 C705 R142 C704 PA CURR L704 C717 PWR PRT...
  • Page 78 NXR-800 NXR-800 PC BOARD PC BOARD FINAL UNIT (X45-3820-13) FINAL UNIT (X45-3820-13) Foil side view (J79-0149-09) Foil side view (J79-0149-09) C170 R106 R138 R137 R110 R136 C167 C150 IC15 R139 R107 L703 C713 C716 C108 J79-0149-09 J79-0149-09 A/5 – –...
  • Page 79 NXR-800 NXR-800 PC BOARD PC BOARD CONTROL UNIT (X53-4130-10) CONTROL UNIT (X53-4130-10) Component side view (J79-0011-19) Component side view (J79-0011-19) C372 R550 R389 R551 CN56 SPG 2 R390 C166 + R535 C170 C104 R534 C144 C141 4 SB C109 IC11...
  • Page 80 NXR-800 NXR-800 PC BOARD PC BOARD CONTROL UNIT (X53-4130-10) CONTROL UNIT (X53-4130-10) Foil side view (J79-0011-19) Foil side view (J79-0011-19) CN69 R475 R434 C500 C415 C403 C169 R171 R149 C189 C204 R150 C446 C188 R160 R457 R161 R478 R415 C424...
  • Page 81 NXR-800 NXR-800 PC BOARD PC BOARD RX UNIT (X55-3100-13) RX UNIT (X55-3100-13) Component side view (J79-0292-09) Component side view (J79-0292-09) CN46 L132 L133 L134 L135 NARROW CN41 WIDE C147 R175 C131 R179 R166 C500 C335 R171 IC15 CN16 CN62 C100...
  • Page 82 NXR-800 NXR-800 PC BOARD PC BOARD RX UNIT (X55-3100-13) RX UNIT (X55-3100-13) Foil side view (J79-0292-09) Foil side view (J79-0292-09) C242 C235 C153 L139 C141 C174 R462 C289 L141 C197 C254 C110 C117 R108 C212 C358 R410 R407 C218 C624...
  • Page 83 NXR-800 NXR-800 PC BOARD PC BOARD TX UNIT (X56-3120-13) TX UNIT (X56-3120-13) Component side view (J79-0153-09) Component side view (J79-0153-09) C151 C811 C805 R801 C801 C812 L801 C803 CN806 C161 IC802 C809 IC803 C806 R803 C802 X401 CN303 C808 R802...
  • Page 84 NXR-800 NXR-800 PC BOARD PC BOARD TX UNIT (X56-3120-13) TX UNIT (X56-3120-13) Foil side view (J79-0153-09) Foil side view (J79-0153-09) C154 R134 IC104 R137 C481 R891 C158 R511 R503 C480 C427 C435 R888 L414 C439 C160 IC405 C466 L408 L405...
  • Page 85 POWER MODULE IC10 RA13H3340M131 FINAL UNIT(PA SECTION) (X45-3820-13)(A/5) TX H:3.8V TX H:13.7V TX H:5W ANT SW L:3.3V L:13.8V TX:100mW L:0.5W :13.8V RX:0W 3DB ATT RF SW RF SW DIRECTIONAL COUPLER TX UNIT C141 C105 C122 C123 R125 CN22 TX ANT X56-312 (A/3)-CN802 RF IN 470p...
  • Page 86 RX UNIT(X55-3100-13) W:7.8V RF SW W:7.4V N:0.5mV CN43 RX_IF_VN CONTROL UNIT N:0.5mV W:3.2V L112 W:-93.2dBm JDP4P02U RF AMP N:0.6mV L39-1476-05 L128 X53-414 -CN300 N:-92.3dBm W:3.7V L34-4725-05 DC SW L71-0646-15 N:5.2mV RD01MUS1-T113 W:2.2V RF AMP L123 CN47 W:-75.7dBm CN41 MONITOR_PORT L138 L140 L71-0648-05 N:0.8mV...
  • Page 87 TX UNIT(X56-3120-13)(A/3) +20dBm C189 C193 C194 CN802 FINAL UNIT E100 VOLTAGE 400-430MHz 400-430MHz 400-430MHz 400-430MHz 400-430MHz 400-430MHz 400-430MHz +20dBm 400-430MHz TX oUT F10-3081-04 REGULATOR 13.8V 13.8V 13.8V 13.8V 13.8V 13.8V 13.8V 13.8V 13.8V X45-382 (C/5) Q102 IC104 -CN1 R176 L125 D108 C182 L128...
  • Page 88 TX UNIT(17SEG) TX UNIT(LED) (X56-3120-13)(C/3) (X56-3120-13)(B/3) Q975 UMG1N DC SW Q976 UMG1N DC SW IC963 SHIFT-REGISTER Q974 UMG1N DC SW Q973 UMG1N DC SW SHIFT-REGISTER IC923 Q972 BU4094BCFV UMG1N IC962 STRB SHIFT-REGISTER DC SW DATA SHIFT-REGISTER SHIFT-REGISTER IC924 IC925 BU4094BCFV BU4094BCFV Q971 UMG1N...

Table of Contents