From: commgrp
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
>Subject: Icom IC-2GAT out-of-band transmit m
Message-ID: <12600087
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
SOURCE: The QRZ Windows Ham Radio CDROM |
