SEA 235, Operator'S Manual

Page: 29 / 104

ADVANCED OPERATIONS
24
SCANNING A CHANNEL GROUP
Consecutive bin locations that have the same first three characters in their name
tag, are known as “scan cells”. SEA has programmed 170 of the 200 possible
bins into 23 different scan cells. Scan cells may be as short as one bin or as long
as 200 bins but should be kept to a reasonable length for scanning efficiency.
Each scan cell is organized with frequency pairs that are related to one another.
To scan a group of channels, first select a bin within a scan cell.
e.g. To scan the KMI marine operator channels programmed in bin locations 13
through 30, select any bin between 13 and 30 followed by “ENT”.
Press
After the name is shown for the selected bin,
press
to start the scan.
Press repeatedly until “ VOICE ” is
displayed then press
The radio will turn on the “SQL” indicator and
begin the scan of bins 13 through 30. The first
time through the scan cell, each bin is sampled
for approximately 7 seconds. When the last bin
in the scan cell has been sampled, the scan
speed will increase to 1 bin every
¼ second.
When an audio signal is received, the radio will
open the squelch and stay on channel for as
long as the signal is present and changing.
When “ PAUSE ” scan is selected and a signal is
received, the radio will stay on the channel for
a maximum of 5 seconds and continue to the
next bin even if the signal is still present. This
is a good selection when scanning active
channels.
“ TELEX ” scan reduces the speed to 1 channel every 4 seconds. The additional
time is required to determine when a valid signal is present.
“ NECODE ” scan is for scanning the Necode bins, 196 through 200. This
special scan mode looks for a 2 KHz tone indicating a possible Necode signal.
The scan speed is increased to approximately 5 channels every
½ second.
ENT
ENT 1 3
LOW SQL
2 FNC
FNC