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October, 1996
6880902Z36-B
5-3
GM300 Radio Service Software Manual
Scanning Features
Scan Features
5
Priority Sampling Method
RSS LOCATION
DEFINITION
Determines the way in which the priority channel(s) is checked for activity during
a “lookback” from an active second priority or non-priority channel.
DEFAULT/CHOICES
Default:
Continuous
Choices:
■
Continuous
■
1-SHOT PL
Continuous
Continuous always performs a complete check of the channel. If no
carrier is present, then the sampling ends. If a carrier is present, a
full PL check is made on each sample.
1-Shot PL
For 1-Shot PL, once a carrier is seen, a full PL sample is only done
once until a sample is seen with no carrier present (that is, a carrier
“break”). See PIX.
RECOMMENDATIONS
Almost always use Continuous. Use 1-Shot PL to reduce hole size on shared chan-
nels (for example, community repeaters, timeouts). Your best advantage occurs if
you reduce the priority sampling rate when using 1-Shot PL.
WARNINGS
There is a risk that messages will be lost on the priority channel. Use Continuous
for critical priority channels (public safety, etc.).
IMPORTANT NOTE
Best performance of 1-Shot PL is attained on a well-controlled channel, since a
wide carrier break is needed to reduce lost priority activity. Your repeater panel
may have an access timer that will help. Busy Channel Lockout on all radios will
help.
SEE ALSO
Busy Channel Lockout, Priority Sampling Rate
PROGRAMMING PROCEDURE
1.
Press
F4
at the
MAIN MENU
to get to the
CHANGE/VIEW CODEPLUG MENU.
4.
At the
RADIO-WIDE SCAN OPTIONS
screen,
press
Tab
(or
Enter
or
Return
) until the
Priority
Sampling
Method
field is highlighted.
2.
At the
CHANGE/VIEW CODEPLUG MENU
,
press
F2
to get to the
RADIO WIDE CONFIGU-
RATION
screen.
5.
Use the
↑ ↓
arrow keys to select the desired
Priority Sampling
Method
.
3.
At
RADIO WIDE CONFIGURATION
, press
F7
to
get to the
RADIO-WIDE SCAN OPTIONS
screen.
Not Programmable with the RSS
MAIN
MENU
RADIO
screen
WIDE
➠
F4
➠
F2
➠
F7
CHANGE/
VIEW
SCAN
screen
OPTIONS
➠
TAB
Priority
Sampling
Method Field
NPRI
sound
voice
long
hole
short
hole
short
hole
short
hole
NPRI
sound
NPRI
sound
NPRI
sound
voice
voice
voice
voice
NPRI
sound
Содержание RADIUS GM300
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