Kenwood TK-2207 Service Manual page 35

■ Frequency and signalling
The set has been adjusted for the frequencies shown in
the following table. When required. re-adjust them following
the adjustment procedure to obtain the frequencies you want
in actual operation.
Frequency (MHz)
Channel No. RX Frequency
1 155.050
2 136.050
3 173.950
4 155.000
5 155.200
6 155.400
7~16
Signalling
Signalling No. RX
1 None
2 None
3 QT 67.0Hz
4 QT 151.4Hz
5 QT 250.3Hz
6 DQT D023N
7 DQT D754I
8 DTMF 159D
9 None
• Preparations for tuning the transceiver
Before attempting to tune the transceiver, connect the unit
to a suitable power supply.
Whenever the transmitter is tuned, the unit must be
connected to a suitable dummy load (i.e. power meter).
The speaker output connector must be terminated with a
8Ω dummy load and connected to an AC voltmeter and an
audio distortion meter or a SINAD measurement meter at all
times during tuning.
Adjustment Frequency
TEST CH RX
Center 155.050MHz
Low 136.050MHz
High 173.950MHz
Low' 145.550MHz
High' 164.550MHz
ADJUSTMENT /
TX Frequency
155.100
136.100
173.900
155.000
155.200
155.400
TX
None
100Hz Square Wave
QT 67.0Hz
QT 151.4Hz
QT 250.3Hz
DQT D023N
DQT D754I
DTMF 159D
DTMF tone 9
TX
155.000MHz
136.000MHz
174.000MHz
145.600MHz
164.600MHz
调整
■ 频率和信令
频率设定调整如下表所示。当需要时，按照如下调整程序重
新调整，以便获得您在实际操作时希望的频率。
频率 (MHz)
信道号码 RX 频率
1 155.050
2 136.050
3 173.950
4 155.000
5 155.200
6 155.400
7~16
信令
信令号码 RX
1 无
2 无
3 QT 67.0Hz
4 QT 151.4Hz
5 QT 250.3Hz
6 DQT D023N
7 DQT D754I
8 DTMF 159D
9 无
• 调谐手持机的准备
在调谐手持机之前，把装置连接到规定的电源。
任何时候调整发射，装置必须连接到合适的假负载 (即功率
表)。
在全部调谐过程中， 扬声器输出端子必须连接8Ω 假负载连接
到 AC 伏特计和音频失真仪或 SINAD 测试表。
调整频率
测试 CH RX
中心 155.050MHz
低 136.050MHz
高 173.950MHz
低' 145.550MHz
高' 164.550MHz
TK-2207
TX 频率
155.100
136.100
173.900
155.000
155.200
155.400
TX
无
100Hz 方形波
QT 67.0Hz
QT 151.4Hz
QT 250.3Hz
DQT D023N
DQT D754I
DTMF 159D
DTMF 音频 9
TX
155.000MHz
136.000MHz
174.000MHz
145.600MHz
164.600MHz
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