Kenwood TK-260G Service Manual page 39

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