Yaesu FT-8900R Tx/Fx Modification

[Mohd Nazry Bin Mustapa]

Anybody can help me on this type of modification cause I already reffer to
one of web site for modification and the site really show how to do it. but
unfortunately when I open my rig, the position of resistor not same as the
picture showed.

The site say there is two resistor next to the cpu, and I need to remove the
most front resistor (only one)[CPU pin No. 62]

But when I open up my rig it happen that only one resistor which sit on CPU
Pin No. 60. Do this set already open the tx frequency ie; 134 - 170Mhz.

Any idea if I removed this resistor, what will happen? This resistor got no
value written (SMD), If I remove and damage this tiny resistor I might not
able to get the substitued for it. That is why I'm a little worry for this
modification.

Any kind help much appreciated

Thank you

[y***@email.com]

On Tue, 30 Dec 2003 16:20:25 +0800, "Mohd Nazry Bin Mustapa"

Post by Mohd Nazry Bin Mustapa
Anybody can help me on this type of modification

Suggest you visit
http://groups.yahoo.com/group/FT-8900

whioch suggested:

Modifications for the Yaesu FT-8900

FT-8900R for extended TX/RX

1. Remove top cover of radio by removing all 8 screws.

2. Disconnect speaker and move top aside.

3. Locate the CPU on the radio, it has a crystal glued to the top
of it and is located in the front left corner of the radio, it's
the largest IC in the radio.

4. To the EXTREME left of the radio, you will see a row of pads,
all empty except for a diode to the front, and one to the back.
There are about 6 or 7 spots for diodes, but only 2 installed.

5. Remove the FRONT (closest to head of radio) diode with a small
soldering iron or other tool.

6. Turn the radio back on, it will AUTOMATICALLY reset.

7. You now have ext coverage eg. TX 137-174, TX 420-470, etc...




and

http://www.cqham.ru/ftp2/sch_serman_ft-8900.pdf
--
Nobody but a fool goes into a federal counterrorism operation without duct tape - Richard Preston, THE COBRA EVENT.