Blackbox Seal series, User Manual

Page: 20 / 28

www.blackboxradios.com 19
Scan
The default setting of this function is off. When this function is enabled, rotate channel selector knob to 16th
channel. The LED flashes green and the radio will check all channels that have the Scan set to YES. The radio
automatically stops at the channel on which a signal is received.
You can enable through “Scan Information” item on the “Optional Feature” menu:
1. Scan Type: Selecting “off”, CH16 is a normal operating channel. Selecting “Carrier Operate” when you rotate
the channel selector to 16th channel, the radio starts scanning.
2. Dropout Delay Time: The Dropout Delay Time is the time from the end of a received call to the time scanning
automatically resumes. Setting range is 0.5~64.5s. The default setting of this item is 3.5s.
3. TX Dwell Time: TX Dwell Time is the time from the end of transmission to the time scanning automatically
resumes. Setting range is 0.5~64.5s. The default setting of this item is 3.5s.
Squelch
Set squelch level to decide how strong a received signal needs to be to unmute the speaker. The lower the squelch
level the weaker the received transmission needs to be to unmute the speaker.
The default setting of this function is Level 4. You can set through “Squelch Level” option in “Optional Feature”
menu. Setting range is 0~9. Selecting “0” causes the squelch to be open. The higher the squelch level, the harder to
open the squelch.
Time Out Timer (TOT)
Time out timer is used to prevent someone from using the same channel for a long time. At the same time to
avoid radio damage, caused by extended continuous transmission. If the transmission exceeds the preset time,
transmission will be inhibited and an alert tone will sound. To stop the alert tone, release the (PTT) key. Press
(PTT) key again and transmission is enabled.
The default setting of this function is 180s. You can set through “Time Out Timer” item in “Optional Feature”
menu. The maximum time is 5 minutes.