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- ICU2AT.1
- >In the area between Q131, D119, D113, and the CPU chip, you should see
- a set of 3 solder pads that form a trianglular pattern that would accept a 3
- legged SMD, like the neighboring diodes and transistors. One of these pads
- connects to the anodes of D119. The new diode's anode goes to this pad.
- Another pad connects to the cathode of D113. The cathode of the new diode
- goes here. This means that the new diode cathode will connect to pin 20 of
- the CPU, and that the anode will connect to pin 27 of the CPU.
- >Carefully prepare the diode leads to line up with the proper pads, and take
- care that when you solder it on, you don't short to something. Also, take
- anti-static precautions. I used a bit of double-sticky-foam tape to hold the
- diode in place when I soldered it. And I left the tape to help keep it in
- place after I was done. Be sure that you will be able to replace the PCB you
- pried up, without it touching the diode.
- >Reassemble the rig.
- >Do a CPU reset. That is: Turn the power on while holding the light switch
- down.
- >You should be able to xmit between 139 to about 160 Mhz. You could tweak the
- PLL to extend it further, but I didn't do this. The xmit power will be lower
- on the higher freqs.
- Disclaimers: Be sure to have the proper permits for out of band operations.
- *****************************************************************************
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