Kenwood TK-890/(B) Service Manual page 74

Item Condition
9. Maximum 1) Select _ _L
deviation MXDV_XXX
• Wide in tune mode
PTT : ON
Deviation meter filter
HPF : OFF
LPF : 15kHz
De-emphasis : OFF
AG : 1kHz/50mV
2) Select _ _C
MXDV_XXX
in tune mode
PTT : ON
3) Select _ _H
MXDV_XXX
in tune mode
PTT : ON
• Narrow 1) Up/down knob : Set the narrow
n_L
MXDV_XXX in tune mode
PTT : ON
2) Select n_C
MXDV_XXX
in tune mode
PTT : ON
3) Select n_H
MXDV_XXX
in tune mode
PTT : ON
10. MIC 1) CH-SIG : 1-1
sensitivity PTT : ON
Wide only Deviation meter filter
HPF : OFF
LPF : 15kHz
De-emphasis : OFF
AG : 1kHz/5mV
11. DQT 1) CH-SIG : 1-2
balance Select BLNC_XXX
in tune mode
PTT : ON
Deviation meter filter
HPF : OFF
LPF : 3kHz
De-emphasis : OFF
2) Up/down knob : Set the narrow
n_ _
BLNC_XXX in tune mode
PTT : ON
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
Power meter Rear ANT Panel
Deviation
meter
AF VTVM Panel MIC
AG
Oscilloscope
TX-RX VR501 Check
(B/3)
Panel
TK-890/
Adjustment
Parts Method
PF3 key Wide ±4.1kHz ± 0.1kHz
PF4 key
Narrow ±2.05kHz ± 0.05kHz
2.75~3.25kHz
PF3 key Wide/Narrow Flat the a parts.
PF4 key Make the
demodulation wave-
form neat.
( B ) /H ( B )
Specifications/Remarks
A
A
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