ADJUSTMENT ITEM
TRANSCEIVER'S
CONDITION
OPERATION
MEASURE
POINT
ADJUST
POINT
VALUE
TX
ADJUSTMENT
(VHF TX power)
1
–
• S e t t h e a d j u s t m e n t v a l u e i n
t h e " A D J U S T M E N T O N T H E
FUNCTION DISPLAY."
See the page 4-14 for details.
[Tuned BPF 1-2]
in the VHF TX
adjustment
[MAIN DIAL]
"8A"
2
–
• Set the core of L1522 as illustrated.
–
L1522
Set the core as
below.
3 • Frequency: 144.000 MHz
• Mode: USB
• Transmitting
1) Connect an RF power meter to
[144MHz ANT].
2) Connect an audio generator and
millivoltmeter to [MIC], and then
set it as;
Frequency : 1.5 kHz
Level
: 1 mV
[144MHz ANT]
L332, L333,
L1551,
L1553
Max. TX power
RESIDUAL AM
(AM mode)
• Frequency: 144.000 MHz
• Mode: FM
• [MIC GAIN]: Center
• Transmitting
1) Connect an RF power meter to
[144MHz ANT].
2) Connect an audio generator and
millivoltmeter to [MIC], and then
set it as;
Frequency : 1.5 kHz
Level
: 10 mV
[144MHz ANT]
L332, L333
Max. TX power
TX MIXER BALANCE
• Frequency: 146.000 MHz*
148.000 MHz**
• Mode: CW
• Key: Up
• Receiving
• Connect a spectrum analyzer to
the [144MHz ANT].
[144MHz ANT]
R1554
Min. LO level
(LO freq.=
135.150 MHz*
137.150 MHz**)
TX ADJUSTMENT
(UHF TX power)
• Frequency: 435.000 MHz
• Mode: USB
• Transmitting
1) Connect an RF power meter to
[430MHz ANT].
2) Connect an audio generator and
millivoltmeter to [MIC], and then
set it as;
Frequency : 1.5 kHz
Level
: 1 mV
[430MHz ANT]
L2522
Max. TX power
RX ADJUSTMENT
(VHF Sensitivity)
• Frequency: 145.980 MHz
• Mode: USB
• Receiving
1) Connect an SSG to [144MHz
ANT], and then set it as;
Frequency : 145.9815 MHz
Level
†
:
–10 dBµ (–117 dBm)
Modulation:
None
2) Connect a millivoltmeter and a
speaker to [EXT-SP].
[EXT-SP]
L302, L1051 Max. AF output
level
IMAGE REJECTION
(VHF band)
• Frequency: 145.980 MHz
• Mode: USB
• Receiving
1) Connect an SSG to [144MHz
ANT], and then set it as;
Frequency : 145.9065 MHz
Level
†
:
+80 dBµ (–27 dBm)
Modulation
: None
2) Connect a millivoltmeter and a
speaker to [EXT-SP].
[EXT-SP]
R135, C212
(Repeatedly)
Min. AF output
level
RX ADJUSTMENT
(UHF Sensitivity)
• Frequency: 435.020 MHz
• Mode: USB
• Receiving
1) Connect an SSG to [430MHz
ANT], and then set it as;
Frequency : 435.0215 MHz
Level
†
:
–15 dBµ (–122 dBm)
Modulation:
None
2) Connect a millivoltmeter and a
speaker to [EXT-SP].
[EXT-SP]
L702
Max. AF output
level
IMAGE REJECTION
(UHF band)
• Frequency: 435.020 MHz
• Mode: USB
• Receiving
1) Connect an SSG to [430MHz
ANT], and then set it as;
Frequency : 434.9465 MHz
Level
†
:
+80 dBµ (–27 dBm)
Modulation
: None
2) Connect a millivoltmeter and a
speaker to [EXT-SP].
[EXT-SP]
R535, C612
(Repeatedly)
Min. AF output
level
*: For except [USA], [CHN], [EXP]. **: For [USA], [CHN], [EXP].
4-6 ADJUSTMENTS ON THE RF-B UNIT
4 - 8
Core
†
; The output level of the standard signal generator (SSG) is indicated as the SSG’s terminated circuit.
