From philabs!prls!pyramid!amdcad!ames!apple!sun-barr!decwrl!shlump.nac.dec.com!larkan.dec.com Wed Aug  2 09:13:15 EDT 1989 
Article 13112 of rec.ham-radio: 
Path: philabs!prls!pyramid!amdcad!ames!apple!sun-barr!decwrl!shlump.nac.dec.com!larkan.dec.com 
>From: kral@larkan.dec.com (Larry N0AMP) 
Newsgroups: rec.ham-radio 
Subject: IC-32AT Modifications (Expanded UHF Coverage) 
Message-ID: <3894@shlump.nac.dec.com> 
Date: 1 Aug 89 11:13:21 GMT 
Sender: news@shlump.nac.dec.com 
Organization: Digital Equipment Corporation 
Lines: 89 
 
 
         Originally prepared by N0ION, modified by N0AMP. 
 
   |                      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.  Coverage is from about 430-460 Mhz. 
 
    +--+          +--+ 
    |  |          |  |  D908 
    +--+          +--+ 
 
    +--+   | /|   +--+   
    |  |---|< |---|  |  D912  Removing this diode results in enabling 
    +--+   | \|   +--+        the unit as a cross-band repeater. 
 
    +--+          +--+ 
    |  |          |  |  D???  Installing diode here (same direction as others)  
    +--+          +--+        permits direct entry entry of the 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. 
 
 
 
 
