Kenwood TK-7180H Service Manual page 57

TK-7180H/7182H
■ 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.
• Test frequency
CH RX (MHz)
1 155.05000
2 136.05000
3 173.95000
4 155.00000
5 155.20000
6 155.40000
7 177.95000
8~16 -
• Test signaling
No. RX
1 None
2 None
3 LTR Data :
AREA=0, GOTO=12
HOME=12
ID=47, FREE=25
4 QT : 67.0Hz
5 QT : 151.4Hz
6 QT : 210.7Hz
7 QT : 254.1Hz
8 DQT : D023N
9 DQT : D754I
10 DTMF : 159D
11 None
12 2-tone :
A : 304.7Hz
B : 3106.0Hz
13 Single Tone : 979.9Hz
56
ADJUSTMENT (TK-7182H)
TX (MHz)
155.10000
136.10000
173.90000
155.00000
155.20000
155.40000
177.90000
-
TX
None
100Hz Square Wave
LTR Data :
AREA=0, GOTO=12
HOME=12
ID=47, FREE=25
QT : 67.0Hz
QT : 151.4Hz
QT : 210.7Hz
QT : 254.1Hz
DQT : D023N
DQT : D754I
DTMF : 159D
DTMF Code 9
2-tone :
A : 304.7Hz
B : 3106.0Hz
Single Tone : 979.9Hz
No. RX
14 None
15 None
16 MSK :
Preamble : 0xAAAA
Sync : 0x23EB
Data : 0x230960C6AAAA
CRC : 0xC4D7
Panel Tuning Mode
■ Preparations for tuning the transceiver
Before attempting to tune the transceiver, connect the
unit to a suitable power supply.
Whenever the transmitter is turned, the unit must be con-
nected to a suitable dummy load (i.e. power meter).
The speaker output connector must be terminated with a
4Ω dummy load and connected to an AC voltmeter and an
audio distortion meter or a SINAD measurement meter at all
times during tuning.
■ Transceiver tuning (To enter tuning mode)
To enter tuning mode, press the [S] key while the trans-
ceiver is in test mode. Use the [B] key to write tuning data
through tuning modes, and the [ ]/[ ] key to adjust tuning
requirements (1 to 256 appears on the LCD).
Use the [C] key to select the adjustment item through tun-
ing modes. Use the [A] key to adjust 3 or 5 reference level
adjustments, and use the [ ■ ] key to switch Wide and Nar-
row.
Channel appears on the LCD. Set channel according to
tuning requirements.
• LCD display in panel tuning mode
Adjustment item
B A L
3 or 5 reference level
: Low
: Low'
: Center
: High'
: High
TX
Single Tone : 1000Hz
MSK
MSK :
Preamble : 0xAAAA
Sync : 0x23EB
Data : 0x230960C6AAAA
CRC : 0xC4D7
Adjustment value
2 5 6
Narrow/Wide
Wide
Narrow