Kenwood TK-780 Service Manual page 50

TK-780
Item Condition
5. Squelch 1) Set test mode
(Tight) Select "nL SQLT" in tuning mode.
SSG freq' : 146.050MHz
SSG output : –109dBm
SSG MOD : 1.5kHz (Narrow)
2) "nC SQLT"
SSG freq' : 160.050MHz
3) "nH SQLT"
SSG freq' : 173.950MHz
4) "sL SQLT", "sC SQLT", "sH SQLT"
SSG freq' : Same as
narrow adjustment.
SSG output : –109dBm
SSG MOD : 2.4kHz (Semi-wide)
5) "wL SQLT", "wC SQLT", "wH SQLT"
SSG freq' : Same as
narrow adjustment.
SSG output : –109dBm
SSG MOD : 3.0kHz (Wide)
6. RSSI (High) 1) Set test mode
Select "nL HRSI" in tuning mode.
SSG freq' : 146.050MHz
SSG output : –70dBm
SSG MOD : 1.5kHz (Narrow)
2) "nC HRSI"
SSG freq' : 160.050MHz
3) "nH HRSI"
SSG freq' : 173.950MHz
4) "sL HRSI", "sC HRSI", "sH HRSI"
SSG freq' : –70dBm
SSG output : Sensitivity
value of 12dB SINAD.
SSG MOD : 2.4kHz (Semi-wide)
5) "wL HRSI", "wC HRSI", "wH HRSI"
SSG freq' : –70dBm
SSG output : Sensitivity
value of 12dB SINAD.
SSG MOD : 3.0kHz (Wide)
7. Squelch 1) Set test mode
check CH : CH1 - Sig1
SSG freq' : 160.050MHz
SSG output : 15dB SINAD level
2) SSG output : OFF
8. QT check 1) Set test mode
CH : CH1 - Sig5
SSG freq' : 160.050MHz
SSG MOD
INT : 1kHz
EXT : 151.4Hz
SSG system MOD DEV
: ±3.75kHz
SSG output : 12dB SINAD level
2) CH : CH1 - Sig4
CH1 - Sig6
CH1 - Sig7
50
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
SSG Rear ANT
panel
AF VTVM ACC
Distortion (EXT.SP)
meter
Oscilloscope
AG
Adjustment
Parts Method
Squelch must be
closed once.
Then adjust for
squelch open point.
Writing values only.
Check Squelch must be opened.
(Wide/Semi-wide/Narrow)
Squelch must be closed.
(Wide/Semi-wide/Narrow)
Check Squelch must be opened.
(Wide/Semi-wide/Narrow)
Squelch must be closed.
Specifications/Remarks