Kenwood TM-255E - Manual (Page 39)

6 SCAN
MHz SCAN
MHz Scan directs the transceiver to scan a specified
1 MHz range of frequencies. The range is determined
by the 1 MHz digit of the currently selected frequency.
For example, when the current frequency is
436.680 MHz and the frequency step is 25 kHz, the
scan range is from 436.000 to 436.975 MHz.
1 Press [MHz] while scanning with Basic Scan or
Band Scan.
• The transceiver scans upwards from the current
operating frequency.
• To change the scan direction, use the
Main Tuning control. Alternate Tuning control
or microphone [UP]/[DWN].
c ---------
MHz A VFO
\
M. CH
o o
Jf J
U
1
zt c c
Jf a Jf
n
LI
n n
n
, ™
LI. U P 1
s 1 3 5 7 9 20 40dB
V
2 4 3 6 10 PR O SC AN
J
2 Press [MHz] again to restore the previous scan
type.
Note: The modulation mode can be changed while scanning.
VFO/MEMORY/CALL SCAN
This combination scan monitors the current VFO
frequency, the memory channel recalled last, and the
Call channel.
1 Press [CALL] to select the Call channel.
2 Press [SCAN].
3 Scan checks in rotation the Call channel, VFO
frequency, and the memory channel last used.
• If the memory channel selected last has no
frequency stored. Scan skips over the memory
channel and only scans the Call channel and
the VFO frequency.
• Locked-out memory channels are not skipped.
4 Press [SCAN], [CLR], or the microphone [PTT] to
stop scanning.
• The transceiver stays in the current mode.
SETTING SCAN SPEED
Scan speed can be changed through 9 steps using
the RIT control. A weight value of the form "PN"
appears on the Display during Scan. "N" is a number
from 1 to 9 that acts as a speed reference number.
Turning the RiT control clockwise decreases the scan
speed, and counterclockwise increases the speed.
Decrease
scan speed.
Increase
scan speed.
The Program Scan scan speed can be set
independently from Memory Scan and
VFO/Memory/Call Scan. The same weight value
selected while in Memory Scan or VFO/Memory/Call
Scan represents the same scan speed; however, this
is not true for Program Scan.
A VFO
M . C H
35
U ZI C ZI
1 Jf O. L
S 1 3 6 7 8 20
ZI
Jf
40d8
n n „ , ™
u. u P 1
2 4 6 8 10 PR O SC AN
J
Note: Remember to center the RIT control when finished
scanning to avoid confusion later when RIT is used to vary the
receiver frequency.
This chart shows the time required for the transceiver
to move either 1 step or 1 memory channel depending
on which type of scan is selected. When Busy-
frequency Stop (Menu A, No. 03) is ON (default), the
SSB step size is 1 kHz and the FM step size is 20 kHz
while using Program Scan. When Busy-frequency
Stop is OFF, the SSB step size is 10 Hz and the FM
step size is 100 Hz.
Weight Value
Program Scan
(msec)
Memory Scan
(sec)
1 20 0.4
2 70 1.8
3 110 3.2
4 160 4.6
5 200 6.0
6 250 7.5
7 300 9.0
8 350 10.5
9 400 12.0
32