Service Manuals, User Guides, Schematic Diagrams or docs for : Kenwood VHF FM Transceiver VHF FM Transceiver Kenwood TM-271A & 271E B51-8663-00-SD

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B51-8663-00-SD


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                     A                                                                                                                                                B                                                                                                                                                                                                     C                                                                                                                                                                                                                   D                                                                                                                                                                          E


    TM-271A/271E
          TX-RX UNIT (X57-685X-XX)
                                                                                                                                                                                                                         SCHEMATIC DIAGRAM
1                                                                                                                                                                                                                                                                                                                              R414

                                                                                                                                                                                                                  Q402,403                                                                                                     470




                                                                                                                                                                                                                                                                          R411




                                                                                                                                                                                                                                                                                                                                                             C417
                                                                                                                                                                                                                                                                                                                                                                                                                                                             CV




                                                                                                                                                                                                                                                               C416

                                                                                                                                                                                                                                                                         1000p




                                                                                                                                                                                                                                                                                                                                                                             1000p
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        R:0.74V




                                                                                                                                                                                                                                                                                                 5.6k
                                                                                                                                                                                                                CHARGE PUMP                                                                                                                                                                                                                                                                                                                                                                                                                   RX VCO                                                                                            BUFFER AMP
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        T:0.62V




                                                                                                                                                                                                                                                                                                                                                                                                                                           R422
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               D403,404
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            C430   4.5p                                                                                           Q410




                                                                                                                                                                                                                                                                                                                                                                                                                                                          10k
                                                                                                                                                                                                         D402                             R410                                                                                                                                                                                                                                                                  RX VCO
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       R:6.11V                                                                                       R:0.97V                                    2SC5108(Y)
                                                                                                                                                                                                                                                                  Q402                                                                                                                                                                                                                                                                                                                                                                        Q405                                                                                                                                                  R:6.17V
                                                                                                                                                                                                   HZU5ALL                                8.2k                                                                                                                      R418                        R419                             R421                       L405 CV L406                                                              D404                        C426                         L408                                       2SK508NV(K52)                                                            C432
                                                                                                                                                                                                                                                                2SA1832(GR)
                                                                                                                                                                                                   VOTAGE                                                         Q403                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   C454
                                                                                                                                                                                                                                                                                                                                                                       1k                       2.7k                            1.5k                                270n                                                       MA2S304                                  30p                     33n                                                                                                                0.3p




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 C427




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             L409
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               27u




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 27u
                                                                                                                                                                                                   DROPPED                                R412                  2SC4738(GR)




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      L410
                                                                                                                                                                                                                                                                                                                              C422




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            8p
                                                                                                                                                                                                                                                                                                                                            470p
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          6p




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         R436
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            MA2S304
                                                                                                                                                                                                                                                                                                                                                                                                                R420




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    120k




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 C455
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  33n
                                                                                                                                                                                                                                                                                                                                                                                                                                1k




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           L418
                                                                                                                                                                                                                                                                                                                                                                                                0.047u35
                                                                                        1k




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          C429
                                                                             R403




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              D403




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  C431




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          3p
                                                                                                                                                                                                                                             10k




                                                                                                                                                                                                                                                                                   R413




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 270n
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                L407




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          1p




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   5p
                                                                                                                                                                                                                                                                                                                                                                                                                                                          0.1u35
                                                                                                                                                                                                                                                                                                                                                                                   C423
                                                                                                                                                                                                                                                                                                 10k




                                                                                                                                                                                                                                                                                                                                                                                                                                           C425
                                                                             R402       1k




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      R423
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                TC401




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  220
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            C428

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      470p
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             10p
                                                                             R401       1k




                                                                                                                                                                                                                                                                                                                                                                                                                C424

                                                                                                                                                                                                                                                                                                                                                                                                                                1u16




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      C452




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           R435
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    470p




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   100
                                                                                                                                                      20

                                                                                                                                                                    19
                                                                                                                                                                                 18

                                                                                                                                                                                             17
                                                                                                                                                                                                         16

                                                                                                                                                                                                                    15

                                                                                                                                                                                                                             14

                                                                                                                                                                                                                                      13
                                                                                                                                                                                                                                                 12

                                                                                                                                                                                                                                                             11
                                                          C475




                                                                                                    C401




                                                                                                                                     C403
                                                                                                            C402
                                          C476

                                                  1000p


                                                                     1000p




                                                                                                                                            100p
                                                                                                            100p


                                                                                                                             100p
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  T/R SW                                                                    R:7.01V
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            R429




                                                                                                                                                         R

                                                                                                                                                                       NC5
                                                                                                                                                                                    P

                                                                                                                                                                                                  FOUT
                                                                                                                                                                                                            NC4

                                                                                                                                                                                                                        FC
                                                                                                                                                                                                                                LE

                                                                                                                                                                                                                                          DATA

                                                                                                                                                                                                                                                      NC3
                                                                                                                                                                                                                                                                 CLK
                                                                                                                                                                                                                                                                                            PLL IC




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           R434


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          C453
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 220p
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            270




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   0
                                                                                                                                                                                                                                                                                             IC401                                                                                                                                                                                                                                                                                                                                                                                                         Q407                            Q408
                                                                               TCXO




                                                                                                                                                                                    OSCOUT
                                                                                                                                                                                                                                                                                            MB15A02                                                                                                                                                                                                                                                                                                                                         T:6.8V                                                        2SJ347                          KRX102U
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             R430                                                                                                                                                                L417




                                                                                                                                                         OSCIN
                                                                             X401       KDC                                                                                                                                                                                         PLL SYNTHESIZER




                                                                                                                                                                                                                                GND
                                                                                                                                                                                                            VCC
                                                                                                                                                                       NC1




                                                                                                                                                                                                                                                      NC2

                                                                                                                                                                                                                                                                 FIN
                                                                                                                                                                                                                        DO
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              220                                                                                                                                                                R432




                                                                                                                                                                                                  VP




                                                                                                                                                                                                                                          LD
                                           R404                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            R:6.96V




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        R431


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  C448
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  470p
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         100k
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      1k

                                                                                                                                                       1

                                                                                                                                                                    2
                                                                                                                                                                                 3

                                                                                                                                                                                             4

                                                                                                                                                                                                         5
                                                                                                                                                                                                                    6

                                                                                                                                                                                                                             7

                                                                                                                                                                                                                                      8

                                                                                                                                                                                                                                                  9
                                                                                                                                                                                                                                                              10
                                           10k
                                                                                                              C473

                                                                                                                      1000p

                                                                                                                                     L401



                                                                              16.8MHz                                                                                                                                                                                                                                                                                                                                                                                                                  D405,406                                                                                                                            C439
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           10p
                                                 C404




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        TX VCO
                                                            15u6.3




                                                                                                                                                                                                                                                                                                      RF AMP                                                                                                                                                                                                                                                                                                                                                                                                                                 T/R SW




                                                                                                                                                                                                                                                      1000p
                                                                                                                                                                                                                                                       C418
                                                                                                                                                      C400




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            8CL
                                                                                                                                                                    0.1u                                                                        



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