Kenwood TM-251A Instruction Manual page 63

SCAN
Scan is a useful feature for hands-off monitoring of your
favorite frequencies. After becoming comfortable with
how to use all types of Scan, the monitoring flexibility
gained will increase your operating efficiency.
This transceiver provides 5 types of Scan as follows:
= _
Memory Scan |} Quick activity update of your favorite
frequencies.
Band Scan
| General update on band activity.
Similar to Band Scan except over a
narrower segment of the band.
Programmable
Band Scan
Call/VFO Scan
Monitor the Call channel plus any VFO
frequency.
Call/Memory
Scan
Monitor the Call channel plus your
favorite frequency.
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Note:
>
Remember to adjust the squelch threshold level {page 28}
before using Scan.
Always turn OFF Tone Alert {page 86}, Monitor {page 70}, an
Page {page 79} before using Scan.
When using S-meter Squelch, Scan stops when the received
signal strength matches or exceeds the S-meter setting. Scan
resumes 2 seconds after the signal level drops below the
S-meter setting.
For CTCSS operation {page 74}, Scan stops and the squelch
opens only for signals that contain the same CTCSS tone thati
stored in your transceiver.
For DTSS operation {page 75}, Scan stops for any signal
received; however, the squelch opens only for signals that
contain the same DTSS code that is stored in your transceiver,
When both CTCSS and DTSS are ON, Scan stops for signals
contain the matching CTCSS tone. However, the squelch oper
only when the matching DTSS code is received.