D Tx Code Channel Selection; D Tx Code Number Selection; D Dtmf Transmission; D Scrambler Function - Icom IC-F521 Instruction Manual

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OPERATION

D DTMF transmission

If the transceiver has a [ ] key, the automatic DTMF
DTMF
transmission function is available. Up to 7 DTMF channels
are available.
q Push [
] — a DTMF code channel appears.
DTMF
w Push [CH UP]/[CH DN] to select the desired DTMF chan-
nel.
e Push and hold [
] to transmit the selected DTMF.
DTMF

D Scrambler function

UT-109 (#02) or UT-110 (#02) optional voice scrambler unit
provides high performance private communication between
stations with the same scrambler codes.
q Push and hold [SCRM] to turn the scrambler function ON.
w "
" appears.
e Push [SCRM] to turn the function OFF.
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