I was sent the following from the r75 Yahoogroup on this:

hi Russ:
my PDFs are graphical in nature so i pasted what my
two new ones say as text for you below:
Voice Synthesizer Volume Adjustment
VERSION 1.0 FOR THE ICOM R75
CAUTION: This procedure has not yet been tested.
DISCLAIMER: The author is not responsible for any
damage resulting from this procedure.
1. Abstract:
The following procedure alters the volume on the
optional UT-102 voice synthesizer.
2. Methods:
Turn the receiver off and remove the six case screws.
Using a plastic screwdriver adjust R1254 (see red
below). Replace the six case screws. Notice the M5282
amplifier (yellow) and R1254 resistor (red) in the
block, schematic, and picture.
WARNING: Only use a plastic screwdriver and DO NOT
drop screws into the unit.

----- Original Message ----- 
From: "Lou Kline" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, April 22, 2007 9:49 AM
Subject: Icom R75 Question


> Hi.
>
> After reading through the insytructional/materials/cheat sheets, I have a
> question.  Maybe I missed it, but is there some way to turn the volume up
> on the UT102 voice synthesizer.  It isn't loud enough to be audible over
> normal receiver audio and the only way I can use it now is to close the
> squelch, hit the button, and then open the squelch again.  I'd like to 
> make
> it about twice as loud as it apparently is by default.  Anyone have this
> problem and solved it?
>
> 73, de Lou K2LKK
>
>
>
> Louis Kim Kline
> A.R.S. K2LKK
> Home e-mail:  [log in to unmask]
> Work e-mail:  [log in to unmask]
> Work Telephone:  (585) 697-5753
>