icom 02at mod  140-163 mhz


a. locate a copy of the june 1986 issue of 73 mag.

b. the article on pg. 60 is for models with id numbers
   lower than 35,000.  if yours is one of the newer
   models like mine.....  then follow these changes:

1. read the entire article b-4 doing anything!!!

2. follow steps 1 to 3  on pg. 61 "modify ur 02at"
   then s t o p !   refer to fig.2 on pg. 60 and remember
   the diodes on urs are in different locations than in
   the pix.

3. using a very small flat blade iron and some solder wick
   remove the the three leg diode  d2     notice that the
   numbering for d1,d2,d3,d4  are off to the left of the
   actual location of the diodes on the board.

4. resolder d2  down in position d5  try to use the solder
   on the pads.. only add solder to the pads if absolutely
   necessary, b-4 you put the diode in place to avoid
   bridging.

5. solder a store bought 1n914 or 1n4148 diode from the top
   pad to the bottom left pad of d4. you will need to bend
   and cut the leads of the diode and pre-tin with solder.
   bend the leads of the diode so that the body of the
   diode lays across the bottom right pad covering it up.
   the banded end of the the diode should be facing down
   towards mhe bottom right pad.

now you are ready to follow steps 7 to 13 and the rest of the
instructions in the article. the only difference you will find
is that a letter "u" will flash to indicate unlocked instead
of the entire display flashing.   gud luck and enjoy the fruits
of you labor.    if you are unable to locate the article pls
send sase to: ka1ghf
              po box 1397
              leominster, mass 01453

73's de ka1ghf "peter"   RELAYED  BY...N0KGX...GENE