From: [email protected] (Larry NAMP)
Subject: IC-32AT Modifications
Date: 16 Jun 89 11:15:28 GMT


Here are 3 modifcations for the IC-32AT, one was taken directly from an ICOM
service bulletin.  The following was partly done by NXION.


  |                      This is a view of the interior (front side) after
  |                      the front of the case has been removed (4 screws
 / \                     in back, 2 screws near PTT switch loosened only).
 | |   +-+  +--+
 | |   | |  |  |         Carefully disconnect speaker/mike cable from PC
+------------------+      board to allow front cover to be fully opened.
|       TOP        |
|                  |      NOTE: Battery should be disconnected.  Use ESD
|                  |      protection (grounded wrist strap, etc.).
|                  |
|                  |
|                  |
|                  |
|                  |
|                  |
|                  |
|                  |
|              +-+ |
|              | | | 5 positions on PC board
|              | | | for diodes (see below for
|  BOTTOM      +-+ | details)
+------------------+
|                  |
|                  |
|     BATTERY      |
|                  |
|                  |
+------------------+




This shows diodes as installed at the factory.

          TOP

   +--+          +--+
   |  |          |  |  D907
   +--+          +--+

   +--+   | /|   +--+
   |  |---|< |---|  |  D913  Removing this diode results in expanded UHF
   +--+   | \|   +--+        coverage. Approximately 420-460mhz.

   +--+          +--+
   |  |          |  |  D908
   +--+          +--+

   +--+   | /|   +--+
   |  |---|< |---|  |  D912  Removing this diode results in enabling
   +--+   | \|   +--+        the unit as a cross-band repeater.

   +--+          +--+
   |  |          |  |  D???  Installing a diode here (same polarity as others)
   +--+          +--+        permits keypad entry of 10mhz digit.

        BOTTOM

  Icom Service Bulletin #13889-005

  The IC-32AT has the capability of being used as a cross-band repeater.
  This function is not enabled as the unit is shipped from the factory.

  To enable this function perform the following steps:

  1- Cut D912 on LOGIC UNIT. (see above figure)

  2- Push and hold the (FUNCTION) switch.

  3- Push the (C) key.

  4- Push the (6) key.

  5- Push the (D) key.

  6- Release the (FUNCTION) switch.

  To cancel "MINI REPEATER" perform the following steps:

  1- Push and hold the (FUNCTION) switch.

  2- Push the (D) key.

  3- Push the (C) key.

  4- Release the (FUNCTION) switch.

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