[ICOM] 718 Speech Compressor Adjustment

[Rick Robinson]

I found it. It is R2220, a 220k trimmer located to the bottom right of 
IC 2201 on the main board when looking at the top side of the board 
layout in the  service manual. How do I know for sure? I looked at the 
service manuals for the 718 and the 706MK2G and they both use a single 
IC for the mic. speech comp, and vox. The IC is the very same one 
according to the parts lists. The compressor circuit is the exact same 
except for one very small difference. The 706MK2G uses a 200K trimmer 
for the comp gain and the 718 uses a 220K trimmer.  Now you can adjust 
to your O'scopes  delight.  My Halloween treat for the group.   Now I'm 
really pumped up about putting my "twins" back together as soon as I buy 
a 718. 73, Rick.  W8ZT