***********************************************************
                                                          *
    MEMBER NAME: BLACK2                                   *
                                                          *
***********************************************************
 
 
                           /-/-/-/-/-/-\-\-\-\-\-\
                          <:-\-Black Box Plans-/-:>
                           \-\-\-\-\-\-/-/-/-/-/-/
 
 
  (>Introduction<)
 
             What is a BLACK BOX? A BLACK BOX is a device that is hooked up
  to your phone that fixes your phone so that when you get a call, the
  caller doesn't get charged for the call. This is good for calls up to 1/2
  hour, after 1/2  hour the Gestapo (the you can guess what happens.
 
             What this little beauty does is keep the line voltage from
  dropping  to 10v when you answer your phone. The line is insted kept at
  36v and it will make the phone think that it is still ringing while your
  talking. The reason for the 1/2 hour time limit is that the Gestapo thinks
  that something is wrong after 1/2 an hour of ringing. (I mean, come on)
 
  (>Phone Modification Instructions<)
 
       All parts are available  Radio Shack. Using the least possible parts
  and arrangement, the cost is $0.98; and that is parts for two  of them!
  Talk  about a deal! If you  want  to splurge then you can get a board, and
  a switch. There are two s
 
 
                      **  Schematic 1 for most fones  **
                      **         LED ON: BOX ON       **
 
                    FROM >--------------------GREEN->  TO
                    LINE >--!   1.8k  LED  !---RED--> FONE
                            !--/\/\/\--!>--!
                            !              !
                            ------>/<-------
                                 SPST
 
 
 
    Parts:  1 1.8k 1/2 watt resistor
            1 1.5v LED
            1 SPST switch
 
   *You may just have two wires which you connect together for the switch.
 
 
                       **  Schematic 2 for all fones  **
                       **        LED ON: BOX OFF      **
                     FROM >---------------GREEN->  TO
                     LINE >-------      ---RED--> FONE
                                 !  LED !
                               ---->/<--!>--
                               !         !
                               ---/\/\/---
                                  1.8k
 
    Parts:  1 1.8k 1/2 watt resistor
            1 1.5v LED
            1 DPST switch
 
 
         Here is the PC board layout that I recommend using. It is neat and is
  very easy to hook up:
 
                      Schematic #1        Schematic #2
 
                     **************     ****************
                     *            *     *  -------     *
                     * --<LED>--- *     *  !     !     *
                     * !        ! *     *  ! <SWITCH>  *
                     * RESISTOR ! *     *  ! !      !  *
                     *        ! ! *     *  ! !      /  *
                     * -------- ! *     *  ! !      \  *
                     * !        ! *     *  ! <LED>! /  *
                     * --SWITCH-- *     *  !      ! \  *
                     *  !      !  *     *  !      ! /  *
                   L *  !      !  * F L *  !      ! !  * F
                   I>RED-      -RED>O I>RED-      ---RED>O
                   N>-----GREEN---->N N>-----GREEN------>N
                   E * h          * E E *              * E
                     **************     ****************
 
 
             Once you have hooked up all the parts, you must figure out what
  set of wires go to the line and which go to the fone. This is because of
  the fact that LED's must be put in, in a certain direction.  Depending  on
  which way you put the LED is what controls what wires are for the line &
  fone.
 
             In order to find out, hook up the box in one  direction using
  one set of wires for line and the other for phone.
 
             *NOTE*  For Model I switch should be OFF.
             *NOTE*  For Model ][ switch  should  be
                    set to side connecting the LED.
 
       Once  you have hooked it up,  then pick up the fone and see if the
  LED  is on.  If it is, the LED will be lit.  If is  doesn't light then
  switch the wires and try again.  Once you know which are which  then label
  them.   *NOTE*  - If neither  directions  worked  then  your switch was in
  the wrong position.   Now lable   the   switch  in  its   current position
  as BOX ON.
 
  (>Black Box Usage<)
 
       The purpose of this box is not  to people  who  call you so it would
  make sense  that  it  can only  be  used  to recieve calls.   When the box
  is  *ON* then you may only recieve calls. Your phone will ring like normal
  and the  LED light on the box will flash. When you answer the fone the LED
  will light and the caller will not be charged. Hang up the fone after you
  are done like normal. You will not be ab
 
   _____________________________________________________________________________
_
   ___________________________________-END-_____________________________________
_
 


Downloaded From P-80 International Information Systems 304-744-2253