Realistic PRO-2004  300 Channel Scanner
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   Here are some changes you can do to the  Realistic PRO-2004  Scanner
   to give you more channels, faster scan rate and the 800 MHz Band and
   also to use the 30kHz steps.

   You will need to get 2 Diodes, Part # 1N914 from any Electronics store,
   or Part # DX-1056 at Radio Shack.


   1. To get  100 more Channels , Install 1 diode in "D510".

   2. To get a  faster scanning rate  Install 1 diode in "D514".

   3. To get  800 MHz band,  Removed "D512" and "D513".


  All these diodes are located on PC-3 Board next to IC504. First you
  unplug the scanner from outlet then removed the 4 screws from back
  of scanner, Removed cover it will be a little hard at first, Flip
  scanner over and locate PC-3 Board there will be a metal box, remove
  the cover, locate IC504 to the left of that the diodes are located.
  Diode 510,511 514 are not number so locate D515 and count up from
  their to fine them. After you have made the changes this will give
  you 10 channels more per Bank at a total of 40 Channels per Bank and
  a total of 400 Channels, A faster scan rate at 10 slow / 20 fast
  channels-per-second , and all of the 800 MHz Band With the 30kHz step.

  The band range will be 25MHz to 520MHZ - 760MHz to 1300MHz
  not bad for Free.

  NOTE:  You will have to reprogram you're scanner. So be sure to copy
  down any frequencies you have stored in scanner.