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GLOSSARY
✔ What is CTCSS (Continuous Tone Coded Squelch Sys-
tem) ?
CTCSS (Continuous Tone Coded Squelch System) allows
communication with silent stand by. Only signals containing
your group code can open the squelch.
This conveniently eliminates unwanted audio and is useful in
group activities or security related activities where unwanted
output can be a problem. Note that CTCSS group mode is not
private—anyone can receive your calls.
The IC-F22SR is equipped with max. 52 tone codes for CTCSS
use. Selecting a code applies it to all 8 operating channels.
Each push of [PTT] superimposes your group code over your
transmit signal; and, only signals containing the same code can
open your squelch. To temporarily hear all signals (including
noise) push and hold [MONI]. Do not use CTCSS if you want to
be able to hear signals on all channels.
✔ Auto Scan function + Smart-Ring
The Auto Scan function searches for signals automatically
and makes it easier to locate new stations for contact or lis-
tening purposes. BUT because the Auto Scan function
checks each operating channel for only a few moments, the
transceiver's response accuracy to Smart-Ring calls is re-
duced. Use one of CH 1–15 when you and your group are
going to use the Smart-Ring function, otherwise the Smart-
Ring function may fail to answer-back the call.
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