Kenwood KCH-16 Service Manual page 39

Note: In the adjustment methods (pages 39 to 54), key names that relate to that of the KCH-16 are listed in shaded boxes.
TK-5710/5710H Common Section
Item Condition
1. Setting 1) Connect the KCH-16 Hand-
held control head to the TK-
5710(B)/5710H(B) transceiver
via the KRK-11 Interface box
and KRK-11 Panel assembly.
2) Power supply voltage
•TK-5710(B)
Power input connector: 13.6V
•TK-5710H(B)
Power input connector: 13.4V
3) SSG standard modulation
[Wide] MOD: 1kHz, DEV: 3kHz
[Narrow] MOD: 1kHz, DEV: 1.5kHz
2. Assist [Panel tuning mode]
voltage 1) Adj item: [VATX]
• TX Adjust: [ *** ]
2) Adj item: [L VATX]→
[LC VATX]→[C VATX]→
[CH VATX]→[H VATX]
Adjust: [ *** ]
PTT: ON
Press [Orange] to store the ad-
justment value after adjustment.
• RX (Upper) 3) Adj item: [VARX u]
Adjust: [ *** ]
4) Adj item: [L VARX u]→
[LC VARX u]→[C VARX u]→
[CH VARX u]→[H VARX u]
Adjust: [ *** ]
Press [Orange] to store the ad-
justment value after adjustment.
• RX (Lower) 5) Adj item: [VARX l]
Adjust: [ *** ]
6) Adj item: [L VARX l]→
[LC VARX l]→[C VARX l]→
[CH VARX l]→[H VARX l]
Adjust: [ *** ]
Press [Orange] to store the ad-
justment value after adjustment.
3. BPF [Panel test mode]
1) CH-Sig: 1-1
Spectrum analyzer setting
Center-f: 152.00MHz
Span: 100MHz
RBW: 1MHz
VBW: 300kHz
TG level: –20dBm
XdB/div: 5dB
Connect the cable (E30-3418-
05) to CN201.
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
Power Rear ANT Front
meter panel panel
DVM TX-RX CVu
Spectrum Rear ANT TX-RX
analyzer panel
Tracking TX-RX CN201
generator
KCH-16
Adjustment
Parts Method
[B],[C] Change the adjust- 1.86V±0.1V
ment value within
the limit of the When adjusting the assist
specifi ed voltage. voltage in PC tuning mode,
slide the bar to indicate
"VCO Lock Voltage" within
1.8V±0.1V on Meter window.
L221 After setting the
L222 adjustment value to
L223 110, adjust each coil
to get the waveform
as shown to the
right.
REF –10.0 dBm
5 dB/
CAL.ON
TG LEVEL
–20 dBm 15dB or
more
RBW
1 MHz
VBW
300 kHz
SWP 50ms SPAN 100.0 MHz
Specifi cations / Remarks
ATT 10 dB
2.5dB MAX
−8MHz+8MHz
−20MHz +20MHz
CENTER 152 MHz
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