69
ADJUSTMENT
Measurement
Test-
equipment
Unit
Terminal
Adjustment
Unit
Parts
Method
Specifications/Remarks
Condition
Item
TK-790/
(
B
)
/H
(
B
)
Common Section
1. Frequency
• Frequency range (MHz)
list
K : 148~174 (TK-790/(B), 790H(B))
K2 : 136~156 (TK-790(B))
• Adjustment frequency (MHz)
• Signalling
2. Setting
• Receiver section
• Transmitter section
The indicated SSG output level are for maximum output.
Whenever there is no modulation desingnation,
standard modulation (MOD : 1kHz, DEV : 3kHz (Wide),
DEV : 1.5kHz (Narrow)) is indicated.
Connect the front panel (KCH-10) to the transceiver’s body.
3. PLL lock
1) CH-SIG : 3-1
K
DC VM
TX-RX
CV
TX-RX
A (TC301) 1.5V
±
0.1V
voltage
CH-SIG : 7-1
K2
Power meter (A/3)
(A/3)
2) CH-SIG : 3-1
K
C (TC302)
CH-SIG : 7-1
K2
PTT : ON
3) CH-SIG : 2-1
Check
8.0V or less
4) CH-SIG : 2-1
PTT : ON
4. Transmit
1) CH-SIG : 1-1
Power meter Rear
ANT
Panel
PF3 key CH-1 frequency
±
70Hz
frequency
Select FREQ_XXX
f. counter
PF4 key
in tune mode
PTT : ON
4
Ω
dummy load
AF VTVM
Oscilloscope
Distortion meter
SSG
ACC
(SP)
ANT
AG
AF VTVM
MIC
PTT
Power meter
Coupler
Deviation
meter
Frequency
counter
ANT
–
+
–
+
+
–
Ammeter
Power
supply
DC IN
K
K2
CH
TX
RX
TX
RX
1
161.000 161.100 146.000 146.100
2
148.000 148.100 136.000 136.100
3
174.000 173.900 156.000 155.900
4
161.000 161.000 146.000 146.000
5
161.200 161.200 146.200 146.200
6
161.400 161.400 146.400 146.400
7
–
–
162.000 161.900
CH No.
Encode tone
Decode tone
1
None
None
2
100Hz square wave
None
3
QT 67.0Hz
QT 67.0Hz
4
QT 151.4Hz
QT 151.4Hz
5
QT 250.3Hz
QT 250.3Hz
6
DQT 023N
DQT 023N
7
Single tone 1633Hz
2 tone 321.7/928.1Hz
8
DTMF [9]
DTMF [159]
9
MSK
None
Содержание FleetSync TK-790
Страница 77: ...TK 790 B H B TK 790 B H B 77 WIRING ...
Страница 93: ...TK 790 B H B TK 790 B H B BLOCK DIAGRAM 117 ...