Scan-Resume Choices - Yaesu FT-920 Operating Manual

Now activate the "Memory Tune" mode by rotat-
ing the VFO-A Tuning Dial slightly either direc-
tion. You will observe the [M T
the display.
Rotate the [SQL] control until the background
noise is silenced, then press the microphone [U
or [D ] switch (or rotate the scanning ring, if
OWN
using the MD-100A8X Desk Microphone) to ini-
tiate scanning. The transceiver will now scan within
the range 50.000 to 50.400 MHz, halting on any
signals received, then resuming its scan based
on the setting of Menu Item U-15 (see below).
Note that these band limits do not apply just to
scanning; they are also applied to the operation
of the VFO-A Tuning Dial, so the PMS feature
makes it easy to stay within a particular band of
operation whether tuning manually or scanning!

Scan-Resume Choices

Scanning operation requires that you have the FT-
920's audio squelched. The transceiver then assumes
that the opening of the squelch corresponds to the
discovery of a signal you may wish to listen to.
Once the scan has been halted, one of three things
may happen:
The default action is that the transceiver
pauses on the signal and stays locked on its
frequency until the other station's transmission
ceases (at which point the squelch will close).
One second after the squelch closes, scan-
ning resumes automatically. The resumption
interval is adjustable from 0 to 10 seconds via
Menu Item U-17 (see page 75).
Another option is that the scanner will halt,
when the squelch opens, for a fixed time pe-
riod (default = 5 seconds). Thereafter, scan-
ning will resume whether or not the other
station's transmission has ended. The "hold"
time is adjustable from 1 to 60 seconds via
Menu Item U-16 (see page 75).
The scanner can also be programmed to stop
when it finds a signal, and lock on that fre-
quency without resuming the scan at some
point.
The scan-resume choices may be selected via Menu
Item U-15 (SCN-STP); see page 75 for details.
FT-920 Operating Manual
Scanning is chiefly useful in the FM mode, when you
are monitoring a number of repeater or simplex chan-
] indicator on nels. When operating on the 50 MHz band, the num-
UNE
ber of channels per second may be adjusted via Menu
Item U-19; the default value is 10 channels per sec-
] ond.
P
When scanning in a narrow-band mode such as SSB
or CW, a signal may occupy a number of synthesizer
steps over its entire bandwidth. Tuning across a CW
signal in, for example, 2.5 Hz steps, will take a con-
siderable amount of time at 1 step per second, espe-
cially if the signal is strong. But until the signal is fully
passed, the squelch will stay open, thinking that it is
finding a new station every 2.5 Hz! Therefore, when
scanning a band in anticipation of a band opening,
you may wish to press the [FAST] key, and reduce
the Pause Time (Menu U-16) to about 1 second, so
as to reduce the holding time on a signal which is
encountered.
Dual Watch is similar, in some respects, to scanning.
In Dual Watch, however, the transceiver monitors
(squelched) on the Main R frequency (typically VFO-
X
67