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  1. hooking a motorola cellular phone to a computer.
  2. ==============================================================================
  3. Motorol Transciever,s
  4. _____________________
  5. 4500x,4800x,6800x,Etc.
  6. ______________________
  7. Female 25 Pin                                Male 25 Pin
  8. D-Connector                                  D-connector
  9. To transciever                               To P.C.Parallel Port
  10.           Pin                                     Pin
  11.           1._____________________________________  4.
  12.           2._____________________________________ 18.
  13.                                      ___10k______ 13.
  14.                                     / 
  15.   ______4+5._______________________/____10K______ 12.
  16.  |       12.____________________________________/
  17.  |       11._____________________________________ 13.
  18.  |       18._____________________________________  1.
  19.  |       21._____________________________________  2.
  20.  |    ___14+17+20+23.____________________________ 18.
  21.  |    |
  22.  |    |___ -ve
  23.  |
  24.  |________ +ve 9 Volt
  25.  
  26.  
  27. Motorola 8500x 8800x(early type)
  28. ________________________________
  29.  
  30. 25 Pin D-plug(P.C.lpt1)           Phone Back(battery removed)
  31.  
  32. Pin          Diode,s         []    []    []      []    []    []
  33.  3.--orange-|<1n4001---------------------/       /           / 
  34.  4.--blue---|<1n4001----------------------------/           / 
  35.  2.--red----|<1n4001---------------------------------------/
  36.  
  37.  
  38.                              []    []    []     []     []    []
  39. 18.--black-------------------/     /            /      /
  40. 13.--yellow-----------------------/            /      /
  41. 12.--brown------------------------------------/      /
  42.  1.--grey-------------------------------------------/
  43.  
  44.  
  45.  
  46.                              []                              [] 
  47.                          -8 to -12V.                     +8 to =12V.
  48. NOTE Diode protocol: Kathode---|<diode---Anode
  49.  
  50. Motorola 9800x Personal tac1 etc.
  51. 25 pin D-plug(P.C. LPT1)                     Phone Back(battery removed)
  52.  
  53. Pin            Diode,s             Battery terminals--> [] [] []
  54.                                                            |
  55.  2.--black----|<1n4001-------------------------------------|
  56.                                                             \
  57.                                                              \black fly lead
  58.  
  59.                              Data plug---> |    |    |    |    |    |    |    |
  60.                                            |    |    |    |    |    |    |    |
  61.                                          white  /   blue  /  yellow     red
  62.                                           /    /    /  green  /         /
  63.                                          /    /    /    /    /         /
  64. 18.--white----Neg 8-12V-----------------/    /    /    /    /         /
  65.              +8 to +12V---------------------/    /    /    /         /
  66. 13.--blue---------------------------------------/    /    /         /
  67. 12.--green------------------------------------------/    /         /
  68.  1.--yellow---------------------------------------------/         /
  69.  4.--red------|<1n4001-------------------------------------------/
  70.  
  71. NOTE Diode protocol: Kathode---|<diode---Anode
  72.  
  73. NEC 9A
  74. ______                           __                             __
  75.                                  ||                             ||
  76.  25 Pin D-Plug(LPT1)             ||                             ||
  77. ____________________             ||                             ||
  78.                                  ||                             ||
  79. Pin                             _||__________         __________||__
  80.   1.green                       |           |         |            |
  81.   6.-|<1n4148------             | phone     /          \  phone    |
  82.   8.-|<1n4148--   |             |          /            \          |
  83.               |   |             |          |            |          |
  84.               |   |      back-->|          |<---front-->|          |<--back
  85.  10.-----------   |             |          |            |          |
  86.  13.-----------------red        |          \            /          |
  87.  15.------blue                    | | | |                 | | | |
  88.  18.------black                       |                     / |  \
  89.                                       |                    /  |   \
  90.                                     black             blue/ green  \red 
  91.  
  92. Diodes = 1N4148
  93.  
  94. NOTE Diode protocol: Kathode---|<diode---Anode
  95.  
  96. NEC 11A transciever
  97.  
  98. **NOTE-A car kit power loom is required to power phone, also a handset 
  99. is required, and is plugged into the female end of the gender change plug.
  100.  
  101. **NOTE-The gender change plug is a male 15 pin D plug soldered back to back
  102. back with a female 15 pin D socket. Male end interfaces transceiver, female
  103. end interfaces the handset.                      15 Pin D-Gender changer
  104.  
  105.  
  106. ____________________                       _______________________
  107.  Pin                                        Pin
  108.   1.------green----------------------------- 13. green
  109.   6.-|<1n4148------ 
  110.   8.-|<1n4148--   | 
  111.               |   | 
  112.  10.-----------   | 
  113.  13.------red--------------------------------12. red
  114.  15.------blue-------------------------------14. blue
  115.  18.------black-------------------------------2. black
  116.     \-----black------------------------------11. black
  117. Power supply 12V dc. Power up using handset BEFORE interfacing computer LPT1.
  118. NOTE Diode protocol: Kathode---|<diode---Anode
  119.  
  120. NEC P3.
  121. _______
  122.  
  123. 25 Pin D-plug LPT1.                         Plug on end of curly cord.
  124. ___________________                         __________________________
  125.  
  126. Pin 25.--------------------black--------------------------------------|
  127. Pin 15.--------------------red-------------------------------------|  |
  128. Pin  6.---|<In4148--|                                              |  |
  129. Pin 13.-------------|------white--------------------------------|  |  |
  130.                                                   ||   [] [] [] [] [] []
  131.                          view into plug:aerial---><>
  132. Pin  3.---|<1N4148---|                            ||   [] [] [] [] [] []
  133. Pin 12.--------------|-----brown--------------------------------|
  134.  
  135. NOTE Diode protocol: Kathode---|<diode---Anode
  136.   
  137.   NEC P4
  138.   ______
  139.  
  140.   25 Pin D-plug LPT1.   Transistors 2N3904 npn   NAM Adaptor Plug   
  141.   ___________________   ______________________   __________________
  142.  
  143.   Pin 15.-----C-\------green----------------------------------------|
  144.                  \                                                  |
  145.   Pin  2.-10K-B---O                                                 |
  146.                  /                                                  |
  147.   Pin 19.-----E-/------blue-----------------------------|           |
  148.   Pin 19.-----E-\                                       |           |
  149.                  \                                      |           |
  150.   Pin  4.-10K-B---O                                     |           |
  151.                  /                                      |           |
  152.   Pin 12.-----C-/---|--yellow                           |           |
  153.                     |                                   |           |
  154.                     |                                   |           |
  155.                     |   NAM Adaptor plug: aerial ---><> [] [] [] [] [] [] [] []
  156.                     |                                            |      |
  157.   Pin 13.----red---(|)-------------------------------------------|      |
  158.                     |                                                   |
  159.                     |---------------------------------------------------|
  160. Panasonic D,E,F 
  161. ----------------
  162.   Build the Maplins 'RS232 to TTL conversion board 'MAX232(Order Code LM75S)to  
  163.   specification, except do not include resistor R5. Switches SW-1 must be in the
  164.   OFF position.
  165.  
  166.  
  167.  9 PIN SERIAL D-PLUG                                  Interface PL2 on MAX232
  168. Pin 8.----------------|--IN4148>|----\
  169. Pin 7.----------------|               \___________________ 1.Pin
  170.                                       /
  171. Pin 4.----------------|--IN4148>|----/
  172. Pin 6.----------------|
  173. Pin 3.-----------------------------------------------------7.Pin
  174. Pin 2.-----------------------------------------------------6.Pin
  175. Pin 5.-----------------------------------------------------8.Pin
  176. *****************************************************************************
  177.  PL1.on MAX232----------'F'Lead------------'D'Lead-----------'E'Lead
  178.  Pin 2+6                 pin 1.             pin 6.            pin 5.       
  179.  Pin 5                   pin 6.             pin 5.            pin 1.
  180.  Pin 7.                  pin 2.             pin 4.            Link to program
  181.                                                           ___ Pin/Power lead 
  182.  Pin 8.                  pin 8.           aerial brade  /     Pin 8.         
  183.                                                        /       /////          
  184.                         1 3 5 7             2  4  6   /1_______|  |_________12
  185.                         [][][][]            [] [] []  [][][][][][][][][][][][]
  186.    View of Plugs-->   <>                 <>           |______________________|
  187.                         [][][][]            [] [] []       |_________________|
  188.                         2 4 6 8             1  3  5
  189. Diode Protocol: Anode---diode>|--Kadthode
  190.  
  191.  
  192.  
  193.