Tone Squelch/Pager Operation - Yaesu FT-470 Operating Manual

Press the VFO key to operate on a vfo, or else select the memory you
want to operate on, and then press F/M and PRI(VFO). A 'P' will appear
in the memory window at the upper left corner of the display, and about
every five seconds the displayed frequency will shift to the priority
memory briefly while the receiver checks for a signal.
As long as no signal appears on the priority men:iory to open the squelch,
you can tune, scan, transmit and receive on the vfo, or select and
operate on other memories or even on the other band. If a station you
wish to talk with appears on the priority memory, press the PTT switch
momentarily while receiving his signal, to stop priority checking (if you
have switched bands, you will have to return to the band on which the
signal has appeared, by pressing the BAND key first. Otherwise, if you
don't transmit when a signal appears on the priority memory, checking
will pause and the decimal on the display will blink; then priority moni-
toring will resume (according to how you set the scan resume mode -
either after a 5-second pause, or after the carrier drops). To cancel
priority monitoring manually, press either the MR or VFO key.
Note that you can use any other memory as a priority channel in the
above procedure when you will be operating on a vfo (while monitoring).
Tone Squelch/Pager Operation
The FT-470 can be used to silently monitor for calls on busy channels
and to transmit CTCSS tones. The transmit (encode) function super-
imposes a subaudible tone (at a frequency too low to be heard) on the
transmitted carrier, while the decode fu·nction monitors receiver audio
through a narrow filter at the same subaudible frequency, keeping the
squelch closed until a matching tone is received. If the p;lging bell
feature is activated, an incoming signal with the matching tone will
cause the speaker to sound an alerting "ring", and a small bell icon will
blink above the !O's of MHz digit of the primary frequency display (so
that you know if a call came in while you were busy elsewhere).
To check or
. ~ t
the CTCSS tone frequency, press F/M and then
TSET(2). The tone frequency will be displayed (in Hz). To change the
tone frequency, rotate the DIAL knob or press the arrow keys until the
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