Kenwood TK-260G Service Manual page 39

Item Condition
1. Sensitivity Adj item [SENS]
Adjustment Adjust [ ]
f
L
.
[S E N S]
PTT : ON
2. BPF (PANEL TEST MODE)
CH-Sig 2-1
Tra-G setting -40dBm
CH-Sig 1-1
CH-Sig 3-1
3. Sensitivity [Panel Test Mode]
Check 1) CH-Sig:1-1
SSG OUT
Wide:-117dBm (0.3 V)
(MOD:1kHz / 3kHz)
Narrow:-117dBm (0.3 V)
(MOD:1kHz / 1.5kHz)
4. Squelch (open) 1) Adj item [SQL3]
Adjust Adjust [ ]
(Wide) SSG OUT:
-124dBm (0.14 V)
2) Adj item [SQL3.]
(Narrow) Adjust [ ]
-124dBm (0.14 V)
5. Squelch(Tight) 1) Adj item [SQL9]
Adjust Adjust [ ]
[Wide] SSG OUT:-117dBm (0.3 V)
[Narrow] 1) Adj item [SQL9.]
SSG OUT:-117dBm (0.3 V)
6. Squelch [Panel Test Mode]
Check 1) CH-Sig:1-1
SQ Level:[SQL5]
SSG OUT:
-118dBm (0.28 V)
2) SSG OUT:OFF
ADJUSTMENT
Measurement
Test equipment
DVM
f f
c H
. . . . . . . .
[S E N S] [S E N S ]
Tracking generator
spectrum analyzer
f f
L H
Fig. 1
SSG
AF VTVM
Oscilloscope
TK-260G/270G
Adjustment
Terminal Parts
Encoder knob
ANT L305, L306, L307
BPF
BPF-WAVE
ANT
Specifications/
Remark
Method
.
f : ([S E N S]) : [88]
L
. . .
f : (S E N S) : [134]
C
. . . . .
f : (S E N S ) : [180]
H
Adjust wave form
to figure 1.(f )
L
Check wave form to figure 2.(f
Check wave form to figure 1.(f
f
C
Fig. 2
Check 12dB SINAD or
more
Encoder Adjust to the
knob squelch
squelch. threshold point
Adjust to the
squelch
threshold point
Check Squelch must
be opened.
Squelch must
be closed.
)
C
)
H
39