From: commgrp@silver.ucs.indiana.edu
Date: 5 Dec 89 09:46:00 PST
Subject: ICOM 2GAT Mods


Fred, I got this off the news, I dont know if you care about it.
Mike

P.S. Only for you information, I know you would never dream of doing this to a
radio. :-)

________________________________________________________________________


>From: commgrp@silver.ucs.indiana.edu
>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
Apparently-To: sanford




OUT-OF-BAND TRANSMIT MOD FOR ICOM IC-2GAT HANDHELD 2M TRANSCEIVER
(copied from packet radio; origin unknown:)


Back side of display board:
 _____________________________________ 
|                          D505        \
|          D507  D504      ___          \
|           ___   ___     |___|          \             |
|          |___| |___|                    \        --  + --
|   D506                    Q506           |           |
|    _o_------               _o_           |       hole for 
|   |___|     |             |___|          |       on/off-vol
|    o o      |              o o           |       control
|             |                |           |__________________
|              -----|<---------                              |
|          add diode: 1N914 or equiv.                        |
|                                                            |

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.

--

Frank    W9MKV     reid@gold.bacs.indiana.edu

 
Copied from the QRZ! Windows Ham Radio CDROM