Icom IC-R20 - Manual (Page 25)

19
4
OPTIONAL UNIT INSTALLATION
4
■ Scrambler unit installation
The following PC board modification is required when installing the
optional UT-109 or UT-110.
q Rotate [VOL] to turn the power OFF, and remove the battery
pack. (p. 3)
w Remove the unit cover as shown at left (Optional unit installation.)
e Cut the pattern on the PCB at the TX mic circuit (MIC) and RX
AF circuit (DISC) as shown below.
r Install the scrambler unit as shown at left (Optional unit installa-
tion.)
t Replace the unit cover and the battery pack, then rotate [VOL] to
turn the power ON.
NOTE: When uninstalling the
scrambler unit
Be sure to re-solder the discon-
nected points at left, otherwise no
TX modulation or AF output is
available.
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