Subject: TS870 MARS/CAP Modification
From: Howard Ryder <W4NTW@ix.netcom.com>

TS870.mod
Here is your chance to prove how adept you are at microsurgery.
This mod will enable the TS-870S to transmit on MARS, CAP and othe frequencies.

1. REMOVE TOP AND BOTTOM COVERS.
2. REMOVE THE TOP SCREW FROM EACH SIDE OF THE FRONT PANEL 
ASSEMBLY.
3. CAREFULLY ROTATE THE FRONT PANEL FORWARD TO GAIN ACCESS TO THE
CONTROL BOARD(X53-3560-11 A/4). THIS BOARD IS MOUNTED VERTICALLY 
AGAINST THE BODY OF THE TRANSCEIVER. IT IS NOT THE BOARD THAT
IS MOUNTED IN THE FRONT PANEL ASSEMBLY.
4. LOCATE AND REMOVE RESISTOR R244 FROM THE CONTROL BOARD. R244 is below
IC12 ROM and above IC23. There are two chip resistors, one on 
top of the other -carefully remove or break the top one..it is easily
fractured -that's R244.
5. REASSEMBLE AND THEN PERFORM THE CPU RESET BY HOLDING THE A=B
BUTTON DEPRESSED AS POWER IS TURNED ON.

 IT WORKS!!