Icom IC-F31GT Instruction Manual page 16

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PROGRAMMABLE FUNCTIONS
D HIGH/LOW OUTPUT POWER
This function selects high or low output power for a channel.
Push the [High/Low] switch to change transmit output power be-
tween high, low1 and low2 output power.
• " " appears when low1 or low2 output power is selected.
D SCRAMBLER FUNCTION
(An optional UT-109 #02* or UT-110 #02* is required.)
This function provides higher communication security.
UT-109: Non-rolling type. 32 code numbers are available.
UT-110: Rolling type. 1020 (4 groups × 255) code numbers are
available.
Push the [Scrambler] switch to toggle the function ON and OFF.
* NEVER use #01 Low AF level versions of the scrambler unit, as
they are not compatible.
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