TM-481A
22
No.
Adjustment Item
Adjustment
Frequency Point
Display
Note
Transmit
(MHz)
Receive
(MHz)
Signaling
1
Frequency Tune
Center
435.100
435.050
2
TX High Power
Low
“H” icon appear
400.100
400.050
Low’
417.500
417.550
Center
435.100
435.050
High’
452.500
452.550
High
46
9
.
9
00
46
9
.
9
50
3
TX Low Power
Low
“L” icon appear
400.100
400.050
Low’
417.500
417.550
Center
435.100
435.050
High’
452.500
452.550
High
46
9
.
9
00
46
9
.
9
50
4
DCS Balance
Low
“DCS” icon appear
400.100
400.050
DCS : 023N
Center
435.100
435.050
High
46
9
.
9
00
46
9
.
9
50
5
DCS Balance (Narrow)
Center
“DCS” and “N” icon appear
435.100
435.050
6
Max Deviation
Low
400.100
400.050
Center
435.100
435.050
High
46
9
.
9
00
46
9
.
9
50
7
Max Deviation (Narrow)
Center
“N” icon appear
435.100
435.050
8
CTCSS Fine Deviation
Low
“CT” icon appear
400.100
400.050
CTCSS : 88.5Hz
Center
435.100
435.050
High
46
9
.
9
00
46
9
.
9
50
9
CTCSS Fine Deviation (Narrow) Center
“CT” and “N” icon appear
435.100
435.050
10
DCS Fine Deviation
Low
“DCS” icon appear
400.100
400.050
DCS : 023N
Center
435.100
435.050
High
46
9
.
9
00
46
9
.
9
50
11
DCS Fine Deviation (Narrow)
Center
“DCS” and “N” icons appear
435.100
435.050
12
DTMF Fine Deviation
Center
435.100
435.050
DTMF :
9
13
DTMF Fine Deviation (Narrow)
Center
“N” icon appear
435.100
435.050
14
Band Pass Tuning
Low
“BUSY” icon appear
400.100
400.050
Center
435.100
435.050
High
46
9
.
9
00
46
9
.
9
50
15
Squelch Tight
Low
400.100
400.050
Center
435.100
435.050
High
46
9
.
9
00
46
9
.
9
50
16
Squelch Tight (Narrow)
Center
“N” icon appear
435.100
435.050
17
Squelch Open
Low
400.100
400.050
Center
435.100
435.050
High
46
9
.
9
00
46
9
.
9
50
18
Squelch Open (Narrow)
Center
“N” icon appear
435.100
435.050
1
9
S-Meter S1 Level
Center
435.100
435.050
20
S-Meter Full Level
Center
435.100
435.050
Table 1 Adjustment items, display and test frequency list
ADJUSTMENT