From philabs!philmtl!uunet!mailrus!iuvax!silver!commgrp Tue Dec  5 09:06:00 EST 1989 
Article 16458 of rec.ham-radio: 
Path: philabs!philmtl!uunet!mailrus!iuvax!silver!commgrp 
>From: commgrp@silver.bacs.indiana.edu 
Newsgroups: rec.ham-radio 
Subject: Icom IC-2GAT out-of-band transmit m 
Message-ID: <12600087@silver> 
Date: 4 Dec 89 19:09:00 GMT 
Organization: Indiana University CSCI, Bloomington 
Lines: 43 
Nf-ID: #N:silver:12600087:000:1641 
Nf-From: silver.bacs.indiana.edu!commgrp    Dec  4 14:09:00 1989 
 
 
 
 
OUT-OF-BAND TRANSMIT MOD FOR ICOM IC-2GAT HANDHELD 2M TRANSCEIVER 
 origin unknown:) 
 
 
Back side of display board: 
 _____________________________________  
I                          D505        \ 
I          D507  D504      ___          \ 
I           ___   ___     I___I          \             I 
I          I___I I___I                    \        --  + -- 
I   D506                    Q506           I           I 
I    _o_------               _o_           I       hole for  
I   I___I     I             I___I          I       on/off-vol 
I    o o      I              o o           I       control 
I             I                I           I__________________ 
I              -----K----------                              I 
I          add diode: 1N914 or equiv.                        I 
I                                                            I 
 
Connect diode between top lead of D506 and lower right lead of  
Q506 as shown. 
 
Notes: D506 may be absent.  If not, remove it. 
       Reset CPU if needed. 
--- 
A friend did this and his IC-2GAT can now transmit 138 to 178 MHz (no  
RF power output measurements were made).  He did no retuning, and did  
not have to reset the CPU.  He used a tiny axial-lead glass diode,  
replaced its leads with wire-wrap wire, and encased it in shrink-tube. 
The operation requires a super-tiny soldering iron.  Observe CMOS  
soldering precautions: Unplug the iron and ground the tip before  
touching the circuit. 
 
Remember: Except for MARS and CAP, it is illegal to transmit outside  
the ham bands with non-type-approved equipment. 
Use of other frequencies outside ham bands should only be  
with transverters, or testing recievers (use a dummy 
load, or attenuator and direct cable).   
-- 
Frank    W9MKV     reid@gold.bacs.indiana.edu 
 
I haven't tried this or verified it, proceed at your own risk.  Stay in legal 
bands, too.  WA2ISE 
 
 
 
