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TUCoPS :: Radio :: ic2gat_1.txt

Modification for Icom 2GAT




IC2GAT.1

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. 


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