Kenwood TK-3217 Service Manual page 46

■ Frequency and signaling
The transceiver has been adjusted for the frequencies
shown in the following table. When required, readjust them
following the adjustment procedure to obtain the frequencies
you want in actual operation.
Frequency (MHz)
Channel No. RX Frequency
1 460.050
2 440.050
3 479.950
4 460.000
5 460.200
6 460.400
Signaling
Signaling 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
10 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 Frequency
Center 460.050MHz
Low 440.050MHz
High 479.950MHz
Low' 450.050MHz
High' 470.050MHz
ADJUSTMENT /
TX Frequency
460.100
440.100
479.900
460.000
460.200
460.400
TX
None
100Hz Square Wave
QT 67.0Hz
QT 151.4Hz
QT 250.3Hz
DQT D023N
DQT D754I
DTMF 159D
DTMF tone 9
MSK
TX Frequency
460.100MHz
440.100MHz
479.900MHz
450.100MHz
470.100MHz
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
1 460.050
2 440.050
3 479.950
4 460.000
5 460.200
6 460.400
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
10 无
• 调谐对讲机的准备
在调谐对讲机之前，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 频率
中心 460.050MHz
低 440.050MHz
高 479.950MHz
低' 450.050MHz
高' 470.050MHz
TK-3217
TX 频率
460.100
440.100
479.900
460.000
460.200
460.400
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
MSK
TX 频率
460.100MHz
440.100MHz
479.900MHz
450.100MHz
470.100MHz
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